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This site contains terms and definitions from many IBM software and hardware products as well as general computing terms.


The IBM licensed program that was used as the operating system for System i servers. The predecessor to i5/OS was Operating System/400 (OS/400). See also IBM i, Operating System/400, System i.

i5/OS NetServer
See i5/OS Support for Windows Network Neighborhood.

i5/OS Support for Windows Network Neighborhood
A function of the i5/OS operating system that enables Microsoft Windows clients on a network to access System i shared directory paths and shared output queues without any unique software. The clients use the file and print sharing functions that are included in their Windows operating systems.

i5/OS user profile
A user profile that is used to sign on to i5/OS. i5/OS user profiles are created with the CRTUSRPRF (Create User Profile) CL command.

See infrastructure as a service.

See Internet Architecture Board.

See Internal Audit and Business Controls.

See interpret as command.

See Identity and Access Governance.

IAG activity
A step, such as generation, authorization, or execution of a request, in an authorization workflow.

IAG actor
Any user that can operate or is associated with an administrative role.

IAG administrator
An administrator that can assign IAG roles.

IAG operator
See IAG actor.

IAG process
A set of activities that support an authorization process.


  1. See identity and access management.
  2. See interapplication messaging.

See inbound application message store.

See Internet Assigned Numbers Authority.

See instruction address register.

See Initial Access Response Seconds.

See item assembly structure.

See input arrival time.

I axis
See inline axis.

I-beam pointer
A pointer that indicates that the pointer is over an area that can be edited, for example, an entry field.

See integrated battery feature.

See interblock gap.

IBM 10GbE RoCE Express feature
A feature that enables Remote Direct Memory Access by managing low-level functions that the TCP/IP stack typically handles.

IBM 10GbE RoCE Express interface
An interface that is dynamically created by TCP/IP that uses a particular port of an IBM 10GbE RoCE Express feature.

IBM 390 hexadecimal floating-point format (390 hexadecimal floating-point format)
A byte representation of floating-point numbers defined in IBM System 390 Principles of Operation. See also IEEE non-extended floating-point format.

IBM Business Partner
A non-IBM organization under a contractual relationship with IBM to provide buyers with information solutions that incorporate IBM offerings.

IBM compatibility font
See compatibility font.

IBM Content Board
A governing body for all content produced within IBM.

IBM data server client (data server client)
A client that determines the location of a remote database, manages the transmission of requests to the database server, and returns the results.

IBM Data Server Client (Data Server Client)
An application development product that allows applications to be developed on a client workstation to access remote database servers, including DB2 family databases, through the DB2 Connect products.

IBM data server driver copy (data server driver copy)
A single instance of an installation of IBM Data Server Driver Package.

IBM Data Server Provider for .NET (Data Server Provider for .NET)
An extension of the ADO.NET interface that allows .NET applications to access a DB2 or Informix Dynamic Server (IDS) database through a secure connection, run commands, and retrieve results.

IBM-defined exit
A location in source code at which IBM has added an exit point; an installation routine can receive control from the operating system at this IBM-defined exit. See also installation-defined exit.

IBM Developer Kit for Java (Developer Kit for Java)
The IBM licensed program that is a compatible implementation of the Sun Microsystems, Inc. Java Technology.

IBM Director Agent (Director Agent)
A component of IBM Director software. When IBM Director Agent is installed on a system, the system can be managed by IBM Director. IBM Director Agent transfers data to the management server using several network protocols, including TCP/IP, NetBIOS, and IPX.

IBM Director Console (Director Console)
A component of IBM Director software. When installed on a system, it provides a graphical user interface (GUI) for accessing IBM Director Server. IBM Director Console transfers data to and from the management server using TCP/IP.

IBM Director Core Services (Director Core Services)
A facility with which IBM Director communicates with and administers a level-2 managed system. IBM Director Core Services includes the service location protocol (SLP) instrumentation, the IBM Director Agent SLP service type, and Common Information Model (CIM).

IBM Director database (Director database)
The database that contains the data stored by IBM Director Server.

IBM Director environment (Director environment)
The complex, heterogeneous environment managed by IBM Director. It includes systems, BladeCenter chassis, software, and SNMP devices.

IBM Director extension (Director extension)
A tool that extends the functionality of IBM Director. Some of the IBM Director extensions are Capacity Manager, ServeRAID Manager, Remote Deployment Manager, and Software Distribution.

IBM Director Server (Director Server)
The main component of IBM Director software. When installed on the management server, it provides basic functions such as discovery of the managed systems, persistent storage of configuration and management data, an inventory database, event listening, security and authentication, management console support, and administrative tasks.

IBM Director Server service (Director Server service)
A service that runs automatically on the management server, and provides the server engine and application logic for IBM Director.

IBM Director service account (Director service account)
The Windows operating-system account associated with the IBM Director Server service.

A person who works for IBM.

The IBM licensed program that is the integrated operating system for Power Systems servers. It integrates such functions as relational database, security, web services, networking, and storage management capabilities. The predecessor to IBM i was i5/OS, which was preceded by Operating System/400 (OS/400). See also i5/OS, Operating System/400, Power Family, System i.

IBM installation planning representative (installation planning representative)
An IBM representative who assists customers in planning and meeting the requirements for installing hardware.

IBM keyboard
See 1A keyboard.

IBM Knowledge Center

IBM MentorPlace
A school-based online mentoring program that matches IBM employees with students and teachers with a focus on academic activities.

A family of IBM licensed programs that provides message queuing services.

IBM MQ Administration Interface (MQAI)
A programming interface that performs administration tasks on an IBM MQ queue manager through the use of data bags. Data bags allow the user to handle properties (or parameters) of IBM MQ objects.

IBM MQ classes for .NET
A set of classes that allow a program written in the .NET programming framework to connect to IBM MQ as an IBM MQ client or to connect directly to an IBM MQ server.

IBM MQ classes for C++
A set of classes that encapsulate the IBM MQ Message Queue Interface (MQI) in the C++ programming language.

IBM MQ classes for Java
A set of classes that encapsulate the IBM MQ Message Queue Interface (MQI) in the Java programming language.

IBM MQ classes for Java Message Service (WebSphere MQ classes for JMS)
The Java Message Service (JMS) provider that is supplied with IBM MQ. As well as implementing the interfaces defined in the javax.jms package, IBM MQ classes for JMS provides two sets of extensions to the JMS API.

IBM MQ fully managed .NET client
Part of an IBM MQ product that can be installed on a system without installing the full queue manager. The IBM MQ .NET client is used by fully-managed .NET applications and communicates with a queue manager on a server system. A .NET application that is not fully managed uses the IBM MQ MQI client. See also client, IBM MQ Java client, IBM MQ MQI client.

IBM MQ Java client
Part of an IBM MQ product that can be installed on a system without installing the full queue manager. The IBM MQ Java client is used by Java applications (both IBM MQ classes for Java and IBM MQ classes for JMS) and communicates with a queue manager on a server system. See also client, IBM MQ fully managed .NET client, IBM MQ MQI client.

IBM MQ MQI client
Part of an IBM MQ product that can be installed on a system without installing the full queue manager. The IBM MQ MQI client accepts MQI calls from applications and communicates with a queue manager on a server system. See also client, IBM MQ fully managed .NET client, IBM MQ Java client.

IBM MQ script commands (MQSC)
Human readable commands, uniform across all platforms, that are used to manipulate IBM MQ objects. See also programmable command format.

IBM MQ server
A queue manager that provides queuing services to one or more clients. All the IBM MQ objects, for example queues, exist only on the queue manager system, that is, on the MQI server machine. A server can support normal local MQI applications as well.

IBM MQ Telemetry
A feature that supports small client libraries that can be embedded into smart devices running on a number of different device platforms. Applications built with the clients use the MQ Telemetry Transport (MQTT) protocol and the IBM MQ telemetry service to publish and subscribe messages reliably with IBM MQ.

IBM MQ Telemetry daemon for devices
See MQTT daemon for devices.

IBM PC double-byte encoding scheme (PC double-byte encoding scheme)
The graphic characters have the following range: The first byte is in the range 81 to FC. The second byte is in the range 40 to 7E and 80 to FC. No other 16-bit patterns are valid as graphic characters. The space character is always assigned to code point 8140.

IBM PC single-byte encoding scheme (PC single-byte encoding scheme)
An extension of the ISO 646 version 7-bit structure to an 8-bit structure. The IBM PC single-byte structure has a valid code point range for 00 to FF. The graphic characters have the following range: The first byte is in the range 81 to FC. The second byte is in the range X'40' to X'7E' and X'80' to X'FC'. No other 16-bit patterns are valid as graphic characters.

IBM product engineering (PE)
The third-level of IBM service support. Product engineering is composed of IBM engineers who have experience in supporting a product or who are knowledgeable about the product.

IBM PS/2 ActionMedia II
See ActionMedia II.

IBM Runtime Environment for Java (Runtime Environment for Java)
A subset of the IBM Developer Kit for the Java Platform that contains the core executable files and other files that constitute the standard Java platform. The IBM Runtime Environment includes the Java virtual machine (JVM), core classes, and supporting files.

IBM service representative
An IBM representative who diagnoses and solves problems, performs maintenance services for IBM products or systems, and repairs systems.

IBM-supplied compatibility font
See compatibility font.

IBM Support Assistant (ISA, Support Assistant)
A software serviceability workbench that helps to reduce support costs and improve customer satisfaction by increasing the customers' ability to resolve software challenges on their own.

IBM Tivoli Directory Server for i5/OS (Directory Server)
A function of the i5/OS operating system that enables the system to run a Lightweight Directory Access Protocol (LDAP) server.

IBM Toolbox for Java (Toolbox for Java)
A library of Java classes that gives Java-program access to System i data and resources.

IBM trade-up
A license for a program that replaces a qualifying IBM Program that is obtained for a reduced charge. See also competitive trade-up.

IBM Unlimited License Agreement (IULA)
A license agreement that customers can use to deploy selected IBM products on an unlimited basis over a defined term.

IBM use report
A report available in the IBM Tivoli License Management (ITLM) Program. The report measures daily program use for most IBM programs eligible for sub-capacity terms.

IBM Virtual Shared Disk (Virtual Shared Disk)
The subsystem that allows application programs running on different nodes to access a logical volume as if it were local to each node. The logical volume is local to only one of the nodes (the server node).

See instruction cache.

See integrated communication adapter.

An RFC 2445 standard for calendar data exchange. Specific iCalendars can be supplied in place of Tivoli Workload Scheduler calendars to determine the dates on which jobs or job streams should run. See also calendar.

See Internet Content Adaptation Protocol.

See inventory control block.

See Inter-Client Communications Conventions Manual.


  1. See interval control element.
  2. See Interactive Connectivity Establishment.


  1. See integrated catalog facility.
  2. See intersystem communications function.

ICF file
A device file that allows a program on one system to communicate with a program on another system. There can be one or more sessions with the same or different communications devices at the same time.

See interim client health check.

See Device Support Facilities.


  1. See issued certificate list.
  2. See integrated cartridge loader.

See Internet Control Message Protocol.

ICMP code
A number that is used in conjunction with an Internet Control Message Protocol (ICMP) type to provide a more detailed description of the ICMP message.

ICMP redirect message
An out-of-bound message that is designed to inform a host of a more optimal route through a network, but possibly used maliciously for attacks that redirect traffic to a specific system.

ICMP scan
A check that determines if a host responds to Internet Control Message Protocol requests, such as a ping.

ICMP service
A user-defined combination of an Internet Control Message Protocol (ICMP) type and an ICMP code.

ICMP type
A number that describes the information that is contained in the Internet Control Message Protocol (ICMP) message.

See interchange node.

See intelligent controller node control block.


  1. An entity representation that consists of a stylized image and an optional label. See also representation.
  2. A graphical representation of an object (for example, a file or program) that consists of an image, an image background, and a label.
  3. A graphic symbol, displayed on a screen, that a user can click with a device such as a mouse in order to select a particular function or software application.

icon box
In AIXwindows, a window used as a visual storage area for icons representing minimized windows.

icons view
A standard contents view in which each object contained in a list object is displayed as an icon.


  1. See interval control program.
  2. See Internet Control Protocol.

See Extended Identity Context Reference.

See intercluster TG.

See Identity Context Extension.


  1. See International Components for Unicode.
  2. See Interactive Chart Utility.

See initial chaining value.


  1. See Identification Division.
  2. See information development.
  3. See identifier.

ID attribute
A component of an XML digital signature that is part of the signed data. The ID attribute can be used in an XPath expression to return arbitrary XML content that is inserted into a protocol message.

See access method services.

See interactive data definition utility.

See integrated development environment.

Ideation Blog
A blog that is used by a community to generate ideas on a particular topic and then collect feedback to get consensus on the best ideas.

Pertaining to a class of operations whose results do not affect the results of any other operation. For example, a call that returns the time is idempotent.


  1. The security service that enables each user of a computer system to be identified uniquely. A common mechanism for implementing this service is to associate a user ID with each user.
  2. In computer security, the process that allows a system to recognize an entity by means of personal, equipment, or organizational characteristics or codes.

identification box
The initial type of box that is created when configuring a matter. It is key to defining the data within a matter.

Identification Division (ID)
One of the four main parts of a COBOL program. In addition to identifying the source program and the object program, this part may also describe the author's name, the location where written, and the date written.

identification label
In PSF, a protected set of resources (fonts, overlays, and page segments) that are used to label PSF output for security purposes. See also security label.

identification record
A type of load module record that contains information about the language translator, user data, and modifications.

identified user
A concurrent user (a user who is signed on to a program simultaneously with another user) of the i5/OS licensed program who is known and reported on by the license management function of i5/OS.


  1. In the C language, a sequence of letters, digits, and underscores used to identify a data object or function.
  2. In the 3270 terminal services development tool, a field on a screen definition that uniquely identifies the state of the screen. Users can choose which fields will be identifiers when creating recognition profiles.
  3. In programming languages, a lexical unit that names a language object, such as the name of an array, record, label, or procedure. An identifier usually begins with a letter optionally followed by letters, digits, or other characters.
  4. One or more characters used to identify or name a data element and possibly to indicate certain properties of that data element.
  5. A sequence of bits or characters that serves as the unqualified name for a database, storage device, or program object. See also descriptor.
  6. The name of an item in a program written in the Java language.
  7. A unique value that is used to represent a business entity within the data. For example, the identifier for a product may be its product code.
  8. In COBOL, a data name that is unique or is made unique by the correct combination of qualifiers, subscripts, or indexes.
  9. In Enhanced X-Windows, a unique value associated with a resource that a client program uses to name the resource. An identifier can be used over any connection to name the resource.
  10. A sequence of bits or characters that identifies a user, program, device, or system to another user, program, device, or system. See also data name.

identifier attribute
An attribute that can be assigned to one component to identify a collection of components, when creating type trees and defining components of a group. An identifier attribute is used during data validation to determine whether a data object exists.


  1. A representation of a trading partner that describes and contains information referenced when a business process involving the trading partner is run. A trading partner can have more than one identity to represent the different ways it performs an operation.
  2. A collection of attributes from a data source that represent a person, organization, place, or item. See also attribute, characteristic, entity.
  3. The data that represents a person and that is stored in one or more repositories.

Identity and Access Governance (IAG)
The strengthening of compliance and reduction of risk by protecting and monitoring user access in today's multi-perimeter environments.

identity and access management (IAM)
The process of controlling access of authorized users to data and applications, while helping companies comply with various regulatory requirements.

Identity and Risk Investigation System (IRIS)
An integrated system that uses advanced analytics to assist auditors and investigators when detecting identity theft and inappropriate usage of sensitive and confidential information.

identity assertion
The invocation credential that is asserted to the downstream server. This credential can be set as the originating client identity, the server identity, or another specified identity, depending on the RunAs mode for the enterprise bean.

identity column
A generated column that is defined with the AS IDENTITY clause. An identity column provides a way for the database manager to automatically generate a numeric value for each row that is inserted into a table. A table can have no more than one identity column.

identity context
Information that identifies the user of the application that first puts the message on a queue

Identity Context Extension (ICTX)
A program interface used by zSecure components to communicate user authentication information across security domain boundaries. ICTX stores identity context information in the identity cache on a local or remote z/OS system.

identity feed
The automated process of creating one or more identity records from one or more common sources of identity data.

identity management
A set of enterprise search APIs that control access to secure data and enable users to search a collection without being required to specify a user ID and password for each repository in the collection.

identity map
A special case of code point conversion in which all input code points are equal to the output code points, thus eliminating the need for a conversion. When converting data from one CCSID to another using the round trip criterion, if the CCSIDs share the same CPGID, an identity mapping condition exists.

identity mapping

  1. The process of modifying an identity that is valid in an input context to an identity that is valid in an output context.
  2. A process in which user information is mapped from the structure provided by one credential or token type into the structure required by another token type.

Identity Markup Language (IdML)
The XML format that is used to store data in the discovery library.

identity policy
The policy that defines the user ID to be used when creating an account for a user.

identity propagation
The concept of preserving a user's security identity information (the distributed identity), regardless of where the identity information was created, for use during authorization and for auditing purposes.

identity provider (IdP)

  1. A service that creates, maintains, and manages identity information, account authentication and credential management services for one or more systems. For example, a user registry for one or more hosts; or a built-in user registry for an application.
  2. A partner in a federation that has the ability to authenticate the identity of a user.

identity resolution
See entity resolution.

identity store
A container for a Java KeyStore (.jks extension), which can hold digital certificates, private keys, or both.

identity token
A token that contains the invocation credential identity, which with the client authentication token are required by the receiving server to accept the asserted identity.

A symbol or picture representing an idea or thing. Any symbol that is universally recognized. See also logogram.

See ideogram.

Pertaining to 2-byte characters consisting of pictograms, symbolic characters, and other types of symbols.

ideographic language
A written language in which each character (ideogram) represents a thing or an idea (but not a particular word or phrase). An example of such a language is written Chinese (Zhongwen). These languages have the following characteristics (a) the set of characters is large and each character requires two bytes; (b) the languages are written uniformly in one direction -- either left to right and top to bottom, or from top to bottom and right to left; (c) each character is assigned a single code position and does not use any combining sequence representation; (d) the languages use ideographs in addition to words containing phonetic characters for their writings. See also complex text language, logogram, phonetic language, simple text language.

ID file
An electronic file used to identify a Notes user. It contains a name, certificate, and private key derived from a password.

See inline direction.

See Interface Definition Language.


  1. See integrated data link control.
  2. See ISDN data link control.

IDL compiler
In the Distributed Computing Environment (DCE) Remote Procedure Call (RPC), the compiler associated with Interface Definition Language (IDL) that processes an RPC interface definition and an optional attribute configuration file (ACF) to generate client stubs, header files, and auxiliary files.

idle agent
A database agent that currently does not have a database connection or an application association. See also active agent.

idle character
A character transmitted on a telecommunication line that is not intended to represent data and does not result in an output operation at the accepting terminal.

idle connection
A connection between two systems where no data is transferred.

idle list
A list of secondary stations on a network that are polled less often by the primary station due to their inactivity.

idle standby
A recovery method in which backup servers with installed applications are in place and started, but in an idle state.

idle state
In the IBM 3800 Printing Subsystem, the time during which the equipment is not in use. In the idle state, some components are cycled down automatically to extend component life.

idle time

  1. The time that a vehicle spends waiting. This time includes all non-rest time and non-work time associated with the vehicle.
  2. The part of operable time during which a functional unit is not operated.

idle timer
A timer used by the operating system factory for simulated-time modeling.

The status of a pair of volumes that have a defined copy relationship for which no copy activity has yet been started.

IDL mangled
Pertaining to Java names that are altered or "mangled" so that they can be mapped to equivalent IDL names. When a Java name contains characters that are not permitted in IDL names, these characters are removed and the remaining characters are used to form the IDL name.

See Identity Markup Language.

See issuer's distinguished name.

See identity provider.


  1. See image data parameter.
  2. See interchange document profile.

ID password
A password associated with an ID file that a user provides to access Domino servers or the Notes User Security panel.

See improved data-recording capability.

ID resolution
The generation of reference numbers prior to loading XML elements into a database. ID resolution is used to uniquely identify data within the database system.

See intrusion detection system.

See invention development team.

See interface data unit.

ID vault
A database on a Domino server that stores ID files so that they can be downloaded automatically to Notes clients.

See Information Development Workbench.

ID Workbench
See Information Development Workbench.

See International Electrotechnical Commission.

See intraensemble data network.

IEDN TOR switch
See intraensemble data network TOR switch.

See Institute of Electrical and Electronics Engineers.

IEEE 754
Binary Floating Point Standard.

IEEE 802.2
An IEEE standard describing how data is formatted into frames for LAN transmission.

IEEE 802.3
Ethernet LAN specification.

IEEE 802.5
Token-Ring LAN specification.

IEEE non-extended floating-point format
A byte representation of floating point numbers defined by IEEE standard 754. See also IBM 390 hexadecimal floating-point format.

See Inter-Enterprise Services.

See Internet Engineering Steering Group.

See Internet Engineering Task Force.

See inline extent.

See instrumentation facility component identifier.

IF expression
An expression in a procedure that tests for a condition. The action performed by the procedure depends on the result of the test.

See instrumentation facility interface.

IFI call
An invocation of the instrumentation facility interface (IFI) by means of one of its defined functions.

See Integrated Facility for Linux.

I format
See information format.

See IMS Fast Path.

See information frame.

I frame
See information frame.

See integrated file system.

if statement
A conditional statement that specifies a condition to be tested and the action to be taken if the condition is satisfied.

if-then-else statement
A statement that compares two or more sets of data and tests the results. If the results are true, the THEN action is taken; if not, the ELSE else action is taken.

if-then rule
A rule in which the action (then part) is performed only when the condition (if part) is true. See also action rule, rule set.

IGA capacity management team representative
The IGA capacity management team is responsible for ensuring that readiness issues are communicated to the OMTL throughout the operations management phase for the deployed portfolio. The IGA capacity management team is responsible for providing capacity reports.

ignorable white space
Any white space characters in an XQuery expression that are not significant to the expression results.

See Interior Gateway Protocol.

See interchange group separator.

See installation-initiating host.

See Internet Inter-ORB Protocol.


  1. See Integrated Information Plan.
  2. See integrated installation package.

See Internet Key Exchange.

A tool supplied with the Gateway for maintaining digital certificates for SSLight and JSSE.

See internal local area network.


  1. See interlanguage call.
  2. See interlanguage communication.

ILC application
An interlanguage communication (ILC) application that includes two or more of the following programs or routines: a C routine, a COBOL program, a Fortran program, a PL/I routine, and an Assembler program.

See indirect list data set.


  1. See Integrated Language Environment.
  2. See indirect list entry.

See Integrated Language Environment C.

See Integrated Language Environment COBOL.

ILE procedure
A set of self-contained high-level language statements that performs a particular task and then returns to the caller. For example, an ILE C function is an ILE procedure.

ILE program
A program created by CRTPGM/CRTBNDxxx commands that contains one of more module objects created by ILE compilers.

See Integrated Language Environment RPG.

See indirect list entry key.

illegal configuration
A configuration that will not operate and will generate an error code to indicate the cause of the problem.

ill-placed file
A file assigned to one storage pool, but having some or all of its data in a different storage pool.

ill-replicated file
A file with contents that are not correctly replicated according to the desired setting for that file. This situation occurs in the interval between a change in the files replication settings or suspending one of its disks, and the restriping of the file.

See information lifecycle management.

See instructor-led online course.

ILOG Rule Language (IRL)
An executable rule language. Rules in ILOG Rule Language (IRL) can reference any execution object and invoke methods on these objects.

See isolated log sender.

See instructor-led training.


  1. See independent logical unit.
  2. See initiating logical unit.

See iSCSI client logical-unit number.


  1. See instant message.
  2. See intranet manager.

A data tower of an Intelligent Printer Data Stream (IPDS) construct that represents image data.


  1. A static, predefined container that provides specific functions. See also virtual image.
  2. A likeness or imitation of an object, such as a picture or logo.
  3. See impression.
  4. A complete runtime that can be used to run applications. Images are used to create containers and can contain multiple parent images (layers). See also base image, container, layer, namespace, parent image, private image repository, registry.
  5. A file system or raw logical volume that is backed up as a single object.
  6. A pattern of toned and untoned pels that form a picture.
  7. An electronic representation of an original document or picture that is produced by a scanning device or created from software.

image area
In AFP Utilities, an area on the display where the image of an AFP resource is displayed when a user designs the resource.

image backup
A backup of a full file system or raw logical volume as a single object.

image block
A structure that contains the raster pattern and the instructions for placing the pattern on the page.

image catalog
An object on the system that contains image catalog entries. Each catalog is associated with one user-specified integrated file system directory. The system-recognized identifier for the object type is *IMGCLG. Image catalogs can have the following statuses: ready, not ready.

image catalog entry
A position (index) within an image catalog that contains information about an optical image file (byte-stream file) that is located in the image catalog directory. Examples of image catalog entry information include optical image file name, volume identifier, index position in the catalog, and a text description of the image. Image catalog entries can have the following statuses: (1) loaded, (2) mounted, (3) unloaded.

image cell
A portion of an image that saves storage by defining only part of a raster pattern. Each image cell must also contain information that defines the placement of its raster pattern within the complete image. An image cell can be replicated to fill a defined area.

image content
Image data and its associated image data parameters.

image coordinate system
In architecture, an X,Y Cartesian coordinate system using only the fourth quadrant with positive values for the Y-axis. The origin of an image coordinate system is its upper-left corner. An X,Y coordinate specifies a presentation position that corresponds to one and only one image data element in the image content.

image copy

  1. A backup copy of a data set, used to restore the data set if necessary after a failure.
  2. An exact reproduction of all or part of a table space. DB2 for z/OS provides utility programs to make full image copies (to copy the entire table space) or incremental image copies (to copy only those pages that were modified since the last image copy).

image data

  1. Rectangular arrays of raster information that define an image.
  2. A pattern of bits with 0 and 1 values that define the pixels in an image. A 1 bit is a toned pixel.
  3. Digital data derived from electrical signals that represent a visual image.

image data element
A basic unit of image information.

image data parameter (IDP)
In architecture, a parameter that describes characteristics of image data.

image data stream
An Advanced Function Printing data stream that represents image data.

image description
A description of the content of an image, used by people who cannot view or process the image fully.

image distortion
In architecture, deformation of an image such that the original proportions of the image are changed and the original balance and symmetry of the image are lost.

image map
A customized graphical image that is plotted with cameras or links to other maps.

image mode
An access mode that establishes a one-to-one mapping of extents in the storage pool with the extents in the volume. See also access mode, managed mode, unconfigured mode.

image object

  1. An object that contains image data.
  2. A named bit string; for example, in the context of optical programming support, an image object refers to a scanned paper document. IBM format descriptive headers and trailers surround the image object in the system.

image object area
A rectangular area on a logical page into which an image presentation space is mapped.

Image Object Content Architecture (IOCA)

  1. An architecture that provides a collection of constructs used to interchange and present images, such as printing image data on a page, page segment, or overlay.
  2. A defined data stream used to store raster image data. The images in a Mixed Object:Document Content Architecture document are stored using IOCA.

image part
A part that displays a picture on a window. The picture is displayed by retrieving the contents of a picture file, such as a bit map.

image point
A discrete X,Y coordinate in the image presentation space.

image presentation space (IPS)
A two-dimensional conceptual space in which an image is generated.

image profile
A profile that defines the software packages and configuration settings for a node. The image profile can be included in a provisioning template.

image recommendation
A recommendation delivered dynamically as HTML images with attribute values such as product name and price. Each image provides a link to the product page on the website for that recommended item.

image segment
Image content bracketed by Begin Segment and End Segment self-defining fields.

image snapshot
A snapshot that has never been unlocked. It is the exact image of the master volume it was copied from, at the time of its creation. See also snapshot.

image stack
An installable software image. There are two types of images, a golden master image and a scripted OS image.

image stamp
An overlaid image annotation.

image symbol set (ISS)
In the GDDM function, a graphics symbol set in which each character is treated as a small image and is described by a rectangular array of display points. Characters in an image symbol set are always drawn in a fixed size. See also vector symbol set.

image volume
A volume in which there is a direct block-for-block translation from the managed disk (MDisk) to the volume.

imaginary line
In the GDDM function, a construction line used to build a fillet. The beginning and ending points of imaginary lines are defined, but the lines themselves do not appear as part of the picture.

See Internet Message Access Protocol.

IMAP server
See Internet Message Access Protocol server.

See interapplication messaging application support protocol data unit.

imbedded blank
See embedded blank.

imbedded text control
See embedded text control.

Apple's proprietary text messaging service for iOS mobile devices. See also instant message.

IM image
A migration image object that is resolution dependent, is bilevel, and cannot be compressed or scaled. See also IO image.

IM-image command set
In IPDS architecture, a collection of commands used to present IM-image data in a page, page segment, or overlay.


  1. See initial machine load.
  2. See initial microprogram load.
  3. See initial microcode load.


  1. See invoke medium map.
  2. See integrated management module.

immediate access storage
A storage device whose access time is minimal compared to other operating times.

immediate checkpoint
The facility that writes simple checkpoint information without requiring termination of MPPs.

immediate command
A command (such as GO, RESET, or LOGOFF) that begins processing as soon as the operator enters it, possibly preempting other ongoing processing. See also regular command.

immediate container
The packaging in which goods are received by the ultimate purchaser. Some examples of immediate containers include retail packaging, individual product packaging, and individual field-replaceable unit (FRU) packaging.

immediate data

  1. In Assembler language, actual data appearing in an instruction, as opposed to the symbolic name of some data. The data is immediately available from the instruction and therefore does not have to be read from memory.
  2. Data transferred during instruction run time.

immediate disconnection
An option for disconnecting CICS from DBCTL, using the CDBC transaction. Immediate disconnection allows only current DL/I requests to DBCTL from this CICS system to be completed before CICS is disconnected from DBCTL. See also orderly disconnection.

immediate index cleanup rollout
A rollout in which index cleanup is performed synchronously with the deletion of the portion of the MDC table. See also rollout.

immediate maintenance
A method of maintaining keyed access paths for database files. This method updates the access path whenever changes are made to the database file associated with the access path. See also delayed maintenance, rebuild maintenance.

immediate message
A message that is created when it is sent. See also predefined message.

immediate mode

  1. In GL, a method whereby graphics commands are executed immediately rather than being compiled into a display list.
  2. A mode in which commands are run immediately as they are received and then discarded rather than being compiled into a display list or stored to be run later. See also store mode.

immediate-request mode
In SNA, an operational mode in which the sender stops sending request units (RUs) on a normal or expedited flow after sending a definite-response request chain on that flow until a response is made to the chain. See also delayed-request mode.

immediate-response mode
In SNA, an operational mode in which the receiver responds to request units (RUs) on a given normal flow in the order that it receives them. See also delayed-response mode.

immediate shutdown

  1. In IBM MQ, a shutdown of a queue manager that does not wait for applications to disconnect. Current message queue interface (MQI) calls are allowed to complete, but new MQI calls fail after an immediate shutdown has been requested. See also preemptive shutdown, quiesced shutdown.
  2. A shutdown of CICS in which tasks in progress are not allowed to complete normally. This form of shutdown is requested from the master terminal.

immediate start
A procedure that is used with some channel-associated signaling protocols, when the address signaling is sent within 65 milliseconds of going off-hook See also delay start, wink start.

Property of objects that, once constructed, do not change state.

An Internet service for wireless devices.

See infrastructure master plan.

An index that shows the effect an occurrence of a risk event will have on the company.

impact analysis

  1. The definition of the impact of a proposed change, including the identification of implementation tasks, targeted and impacted configuration items, and other possible effects to services or business processes.
  2. The identification of how a change to one item affects other, related items.

impacted clause
A clause in a base contract that is affected by any changes made in the amendment clause.

impacted configuration item
A configuration item (CI) that is not the direct target of a proposed change, but which will be affected by the change. Impacted CIs are Often identified by relationships with target CIs.

impact printer
A printer in which printing is the result of mechanically striking the printing medium. (T) See also nonimpact printer.

impact view
A graphical view in the Job Scheduling Console used to modify and maintain job stream instance dependencies in the plan. See also plan.

The combined effect of resistance, inductance, and capacitance on a signal at a given frequency.

An item that prevents progress or a work item to track something that prevents progress.

imperative statement
In COBOL, a statement that either begins with an imperative verb and specifies an unconditional action to be taken or is a conditional statement that is delimited by its explicit scope terminator (delimited scope statement). An imperative statement can consist of a sequence of imperative statements.


  1. A breach of communication security in which the information is passed to a person posing as the intended receiver or information is sent by a person posing as someone else. See also eavesdropping, tampering.
  2. A functionality provided to buyer users to take the view of different users and complete actions and tasks on behalf of those users.

See internal microprogram instruction.

See initial microprogram load.

A Java programming language keyword that can be used in a class definition to specify the interfaces used by the current class.

The specification of what instance variables implement an object's state, and what procedures implement its methods.

implementation by milestone
A conversion approach that allows for a staged conversion of an installation's data to system-managed storage on a direct access storage device (DASD), a tape, or an optical device.

Pertaining to behavior that is defined by the compiler rather than by a language standard. Programs that rely on implementation-defined behavior may behave differently when compiled with different compilers. See also undefined behavior.

implementation framework
A set of guidelines for creating instances of related architectural components.

implementation framework view
For RosettaNet, the transfer protocol specific requirements for any given PIP, based upon the requirements in the BOV and FSV sections of the PIP, as well as the format of the service content.

implementation task
A task required to carry out a change. The performance of an implementation task might cause the targeted and impacted configuration items to be taken out of service. Identification of implementation tasks is often performed during impact analysis.

implemented data resource
An information asset that represents a database and its contents (schemas, database tables, and stored procedures), a data file and its contents (data file structures and data file fields), or a data item definition.

implementer name
In COBOL, an IBM-defined name that includes assignment names, computer names, function names, and language names.

Capable of being understood from something else, though unexpressed.

implicit allegiance
In mainframe computing, a relationship that a control unit creates between a device and a channel path when the device accepts a read or write operation. The control unit guarantees access to the channel program over the set of channel paths that it associates with the allegiance. See also contingent allegiance, reserved allegiance.

implicit binding method
In the Distributed Computing Environment (DCE) Remote Procedure Call (RPC), the management of the binding for an RPC. A global variable in the client application holds a binding handle that the client stub passes to the RPC runtime environment.

implicit cast

  1. An implied expression that converts the value of its operand to a specified type.
  2. A built-in or user-defined cast using either the IMPLICIT keyword or automatically invoked by the database server to perform data-type conversion when faced with non-comparable types (such as an INTEGER compared with a CHAR). See also cast, compatible data types, explicit cast.

implicit casting
The automatic conversion of data of one data type to data of another data type based on an implied set of conversion rules. This automatic conversion occurs in support of weak typing. See also strong typing, weak typing.

implicit community activity
An activity where all the members of an IBM Connections community are added as authors of the community activity by default.

implicit connection
A connection that is made to a database without a user ID or password. See also explicit connection.

implicit disconnection
In DB2 for i5/OS, the ending of the conversation between an application requester and an application server.

implicit focal point
An assigned focal point for which the nodes to be included in its sphere of control (SOC) are defined at the SOC nodes. The management services capabilities exchange that brings a node into the sphere of control of an implicit focal point is initiated by the SOC node. See also explicit focal point.

implicit format
A format that defines a group type whose data objects are distinguishable by content, not syntax. Implicit format relies on the properties of the component types. Unlike explicit format, if delimiters separate data objects, they do not appear for missing data objects. See also explicit format.

implicit pool
A pool of workstation or printer LUs that Communications Server uses to complete connection requests that do not specify a particular device name. See also explicit pool.

implicit privilege

  1. A privilege on one or more data objects that are referenced by a package. During package execution, the user ID running the package inherits within certain boundaries the privileges of the user ID that bound the package. See also authority level.
  2. A privilege that accompanies the ownership of an object, such as the privilege to drop that object. Different authority levels and database authorities can also provide implicit privileges on one or more objects. See also explicit privilege.

implicit rebind
In DB2 for Linux, UNIX, and Windows, a process by which packages that are invalid are rebound automatically when an application process begins to use that package. See also rebind.

implicit scope terminator
In COBOL, a separator period that ends the scope of any preceding unterminated statement, or a phrase of a statement that by its occurrence indicates the end of the scope of any statement contained within the preceding phrase.

implicit time zone
In DB2 XQuery, Coordinated Universal Time (UTC), which is used when a date, time, or time zone value that does not have a time zone is used in a comparison or arithmetic operation.

implicit transaction
A transaction that begins implicitly after the COMMIT WORK or ROLLBACK WORK statement. This is the only type of transaction that ANSI-compliant databases support, but it is also available for other databases that support logging. See also explicit transaction, singleton implicit transaction.

implicit trusted connection
A trusted connection that allows the acquisition of only a trusted context default role. See also trusted connection.

implied node
A node that is assumed to exist and is therefore drawn in the Transaction Tracking topology. An implied node is created when an aggregate collected in an earlier aggregation period is not collected for the current aggregation period.

implied paragraph structure
In DCF, an element that begins with an implied paragraph, that is, an element for which you do not specifically enter a paragraph tag. The existence of the paragraph is understood from the existence of the implied paragraph structure, for example, as in notes, figure captions, and lists.

implied semicolon
In REXX, an assumed semicolon at the end of each line.


  1. A development artifact in a module that obtains a service, which exists outside of the module. Imports are used so that services can be called from within the module. See also import file.
  2. To bring information from one system or program into another.
  3. The process of adding objects and metadata defined in an external file generated by export, to the content repository.
  4. To add an existing package that was installed using an installation tool other than Installation Manager to the list of installed packages so that Installation Manager can manage the package. This function is only available after Installation Manager detects a package in a repository that requires importing.
  5. In ILE binder language, a reference to an external symbol defined in another module or program. See also export.
  6. In NCS, to request the operations defined by an interface. A client imports an interface from a server. See also export.
  7. To read a file in a format that is not native to the application in use.
  8. An external data file, or data feed, that is used to import data into a catalog or hierarchy.
  9. To copy data from an external file, using formats such as PC/IXF, DEL, or ASC, into database tables. See also export.
  10. The operation to enter previously exported logical volumes (LVOLs) residing on a stacked volume into a virtual tape server (VTS) library. After the list of LVOLs to import is written on an import list volume and the stacked volumes are entered, the import operation is initiated.
  11. The point at which an SCA module accesses an external service, (a service outside the SCA module) as if it was local. An import defines interactions between the SCA module and the service provider. An import has a binding and one or more interfaces.
  12. The process that accepts the data from a data source into a catalog or hierarchy. See also staging area.
  13. In VisualAge RPG, a function that allows an application to use data that was created by another application. It usually involves some file conversion.

Important to Me bar
The banner in Verse that displays images of people who matter the most to the account holder. Clicking an image can compose a message to a person, show all of the messages received from a person, start a chat, or view a person's business card. Verse uses analytics to suggest people to display in the Important to Me area.

import block
A package of data from Analyst or an external system that is validated and prepared for import into a Contributor application. The import block is imported into the Contributor application data store through a reconcile job.

import design
A specification of how data from an external source will be transformed into chart or repository items during an import procedure.

imported logical volume
An exported logical volume (LVOL) that has undergone the import process and can be referenced as a tape volume within a virtual tape server (VTS) library. An imported LVOL originates from a stacked volume that underwent the export process.

imported restore
A process in which a backup is taken of an instance on one server and restored on another server.

In Enterprise Service Tools, a set of components that can be used to populate parts of the information model from existing resources.

importer of record
The party responsible for customs clearance.

import file
A file created during the development process for outbound operations that contains the configuration settings for outbound processing. See also import.

import link
A function used in Analyst to update the items in a dimension on a regular basis from a source file or database.

import list volume
A virtual tape server (VTS) logical volume (LVOL) containing the list of LVOLs to import. This list can contain individual logical volumes or it can contain a list of stacked volumes whose LVOLs will be imported.

import map
A map that defines how to move data from an application file (flat file definition), which may contain multiple documents, to the EDI standard-formatted documents that partners expect to receive. An import map is necessary for outbound processing.

Import Requirements Executive (IRE)
An executive that has management responsibility for overall import compliance and supply chain security at a site or in a country.

import tool
See environment import.

import translation object

import utility
A utility that copies selected object definitions from an external file, created using the export utility, to the current directory. See also export utility.


  1. In web advertising, an ad's appearance on an accessed page. For example, if a web page displays three ads, each ad would have one impression. Online publishers often sell ad space according to impressions. See also clickthrough rate.
  2. The transfer of an image to a sheet of paper. Multiple impressions can be printed on each side of a sheet. Printer speed is often measured in impressions per minute (ipm).

improved data-recording capability (IDRC)
A form of compression used when storing data on tape. IDRC can increase the effective, cartridge, data capacity and the effective data-transfer rate.

impulsive noise
Noise produced without cause.

A measurement of the variability in a subgroup or segment of data. A low impurity measurement indicates a group where most members have similar values for the criterion or target field.

See intensive mode recording.


  1. See Information Management System.
  2. See Internet Management Specification.

IMS attachment facility
A DB2 for z/OS subcomponent that uses z/OS subsystem interface (SSI) protocols and cross-memory linkage to process requests from IMS to DB2 for z/OS and to coordinate resource commitment.

IMS catalog
A system database managed by IMS that stores metadata about databases and applications and provides a comprehensive view of IMS database metadata.

IMS command
A request from a terminal or AO (automated operator) to perform a specific IMS service, such as altering system resource status or displaying specific system information.

IMS Connect
The product that runs on a z/OS platform and through which IMS Connector for Java communicates with IMS. IMS Connect uses OTMA to communicate with IMS. See also Open Transaction Manager Access.

IMS control program
The IMS program that initiates and controls the major IMS facilities, such as IMS database, telecommunications, and message scheduling.

IMS conversation

  1. In IMS Connector for Java, the dialog between a Java client program and a message processing program.
  2. A dialog between a terminal and a message processing program using IMS conversational processing facilities. See also conversational processing.

IMS Database Manager (IMS DB)
A database system that processes concurrent database calls and offers high performance for a variety of applications, ranging from those with moderate volumes to extremely high volumes and those with simple data structures to complex data structures.

IMS DataPropagator
A product that enables data to be replicated between IMS and DB2 databases.

See IMS Database Manager.

IMS Fast Path (IFP)
A type of program designed to operate with expedited message handling in a Fast Path region.

IMS Fast Path region
An online environment in which message-driven programs and DEDB online utilities operate.

The 4-byte subsystem identification used by a given IMS job. For the shared-queues and data-sharing environment, each IMSID in the group must be unique; in other cases, each IMSID might not have to be unique.

IMS instance
An active, unique IMS system in an IMSplex.

IMS Java
A Java library that allows JDBC access to IMS databases from JMP or JBP applications, WebSphere Application Server for z/OS EJBs, CICS JCICS applications, and DB2 UDB for z/OS stored procedures.

IMS JDBC driver
A driver that provides a connection to the IMS database, which enables users to access and change the database by using SQL queries.

IMS monitor
An optional facility that records the activity within the IMS control region and dependent regions.

A set of systems in an Information Management System (IMS) network that work together as a unit. Typically, these systems share resources, run in a Parallel Sysplex environment, and include a Common Service Layer (CSL). See also Multiple Systems Coupling.

IMSplex component
An entity (typically running in its own address space) that manages resources, operations, or facilitates communications between other IMS-defined entities. Examples of IMSplex components are IMS subsystems (DB/DC, DBCTL, DCCTL), the Resource Manager, the Operations Manager, and the Structured Call Interface. A DLIBATCH or DBBBATCH region is considered a IMSplex component even though it does not interact with the Common Service Layer managers.

IMSplex member
Any IMS-defined entity in an IMSplex that typically runs in its own address space and is managed by the IMS Common Service Layer.

IMS repository function
A centralized data storage and retrieval solution that enables multiple IMS systems in an IMSplex to manage, store, share, and retrieve resources, such as resource and descriptor definitions, in common IMS repositories, such as the IMSRSC repository. This function simplifies the dynamic resource definition (DRD) process by eliminating the need to manually coordinate individual resource definition data sets (RDDSs) across an IMSplex. See also IMSRSC repository, repository index data set, repository member data set, RS catalog repository data sets.

IMS request message (IRM)
An IMS request message (IRM) header that is used on input messages from IMS Connect client application programs to communicate protocol options to IMS Connect.

IMS Resource Lock Manager (IRLM)
An IMS global lock manager that resides in its own address space. IRLM is required for block-level database sharing, either under DBCTL control or in an IMS data sharing environment.

IMSRSC repository
A centralized IMS data storage and retrieval facility, managed by the Repository Server (RS), for storing and managing the resource and descriptor definitions that are supported by dynamic resource definition (DRD). The IMSRSC repository is a strategic alternative to using resource definition data sets (RDDSs), which require manual coordination. See also IMS repository function, RS catalog repository, RS catalog repository data sets.

IMS server
An integrated management system for ISAM ESSO that provides a central point of secure access administration for an enterprise. It enables centralized management of user identities, AccessProfiles, authentication policies, provides loss management, certificate management, and audit management for the enterprise.

IMS subsystem
See IMS system.

IMS system
The IMS control region and its associated separate address spaces (DL/I and DBRC) and dependent regions.

IMS system log
Logically, a single log made up of online data sets (OLDSs) and write-ahead data sets.

See IMS Transaction Manager.

IMS transaction
A specific set of input data that triggers the execution of a specific process or job. A transaction is a message destined for an IMS application program.

IMS transaction code
A 1- to 8-character alphanumeric code that invokes an IMS message processing program.

IMS Transaction Manager (IMS TM)
A data communication system that provides high-volume, high-performance, high-capacity, low-cost transaction processing for both IMS DB and DB2 databases.

See Information Management System/Virtual Storage.

See intelligent network.

A status of a unit of recovery that occurs when DB2 for z/OS fails after a unit of recovery begins to be rolled back but before the process is completed. DB2 for z/OS continues to back out the changes when the process restarts. See also in-commit.

Pertaining to an object for which the client does not possess a valid designator or handle.


  1. Pertaining to a window that does not have the input focus. See also input focus.
  2. In VTAM, the state of a resource or a major or minor node that has not been activated or for which the VARY INACT command has been issued. See also inoperative.
  3. Pertaining to a node or device not connected or not available for connection to another node or device.

inactive configuration
A configuration contained in a source control data set (SCDS). An inactive configuration is not currently being used by the storage management subsystem (SMS).

inactive connection
A broken connection between two systems where no data can be transferred.

inactive data
A copy of active data, such as vital records or a backup copy of a data set, that is written once and is not expected to be used again. Inactive data is never changed. However, it can be deleted, superseded by another copy, or moved to an optical library or shelf. See also active data.

inactive file system
A file system for which space management has been deactivated. See also active file system.

inactive library
A library not currently in use by the online IMS system in a system using online change. This library might be at a different level than the current or active libraries.

inactive record
An inactive subfile record or any record format that is not currently shown on a display. See also active record.

inactive subfile record
A subfile record that either was not added to a subfile by a write operation or was described as inactive by the data description specification (DDS) keywords SFLINZ and SFLRNA. See also active subfile record.

inactive version
A backup version of a file that is either not the most recent backup version, or that is a backup version of a file that no longer exists on the client system. Inactive backup versions are eligible for expiration processing according to the management class assigned to the file. See also active version, backup version.

See Inverse Address Resolution Protocol.

Pertaining to signals that are carried within the telephony voice channel. See also out-of-band.

in-band communication
See interprocess communication.

Pertaining to a device that is built into the main unit.


  1. In communication, pertaining to data that is received from the network. See also outbound.
  2. Pertaining to a shipment where the consignee manages the delivery of freight from the origin to the destination.

inbound application message store (IAMS)
A message store, implemented by means of the database table DNF_IAMS, in which WebSphere BI for FN stores messages that are received from remote destinations (OSN messages).

inbound authentication
The configuration that determines the type of accepted authentication for inbound requests.

inbound binding
A definition that determines how inbound events via HTTP or JMS are received.

inbound channel
A channel that receives messages from another queue manager.

inbound connection
A resource that is used to import data from selected outbound connections to a component. They are created to specify which component the selected outbound component should connect to.

inbound DTE attribute
In OSI, an attribute specified by the local node to regulate inbound connection requests from an adjacent node to the local node over an X.25 subnetwork. The inbound DTE attributes are accept calls and reverse charging.

inbound endpoint
The origin of inbound events. An inbound endpoint must specify an inbound binding. See also event binding, outbound endpoint.

inbound envelope
An EDI structure that identifies an inbound document within Sterling Integrator so that it can be sent and received by trading partners.

inbound event
A declaration that a monitoring context or KPI context will accept a specific event at run time.

inbound exchange profile
An exchange profile that specifies the organizations, actions, and triggers used to exchange documents that come from a trading partner to the owner organization.

inbound feed
A feed that is created to process the invoice batch for payment.

inbound filter
A filter that is applied to frames that flow into a port from a transmission link or LAN.

inbound interaction
An interaction between a marketer and a customer that is initiated by the customer. See also touchpoint.

inbound intrusion
An intrusion that originates from a remote system and targets a port and IP address on the local system.

inbound link
A link that is defined by a referring website and a destination URL, used in the Inbound Link Analysis reports. See also referring site.

inbound mapping
A mapping process in which the system translates a trading partner’s EDI standard formatted business document to an application file format. To translate inbound data, an export map in Gentran Server for Windows Application Integration is required.

inbound message
A message that WebSphere Commerce receives from an external or back-end application. Inbound messages are used to integrate WebSphere Commerce with other systems.

inbound pool point
A pool point where the pool point distributor manages the delivery of shipments to the same facility. The orders are unloaded and combined into new shipments. The shipper manages the delivery from the pool point to the final destinations. See also pool point.

inbound port
A type of port that takes a message that is received at an endpoint listener and passes it to the service integration bus for forwarding to the appropriate inbound service.

inbound processing
The process by which changes to business information in an enterprise information system (EIS) are detected, processed, and delivered to a runtime environment by a JCA Adapter. An adapter can detect EIS changes by polling an event table or by using an event listener.

inbound service
The external interface for a service that is provided by your own organization and hosted in a location that is directly available through the service destination.

inbound transport
Network ports in which a server listens for incoming requests.

inbound trigger
An external event that automatically starts a process, such as a run of a flowchart or scheduler job.

inbound two-way push pull exchange profile
The exchange profile from the trading partner to the owner organization in which the owner organization receives two requests from the trading partner, a push request and a pull request. The exchange is asynchronous and time elapses between the push and pull request for the business application to process the request.

inbound two-way synchronous exchange
An exchange from a trading partner to the owner organization, in which the trading partner waits for a response from the owner organization.


  1. In a mail program, the main or default container that receives all incoming mail. Messages can be moved out of the inbox and put in various containers.
  2. A Gentran Server for Windows message queue that stores messages waiting to be processed by a gateway.
  3. A folder that contains tasks assigned to a specific user.

inbox monitoring
A method for monitoring how contacts receive mailings in their inboxes, or if contacts did not receive the mailing at all.

in-built format
See built-in format.

inches per second (ips)
A measure of tape drive speed and performance.


  1. An event that has been defined by a site administrator as a possible attack.
  2. A failure or set of consecutive failures over a period of time without any successful transactions. An incident concerns a period of time when the service was unavailable, down, or not functioning as expected.
  3. An event in which data or a system may possibly be compromised.
  4. An event that involves criminal activity.
  5. See security incident.
  6. An event that is not part of the standard operation of a service and causes or can cause a disruption to or a reduction in the quality of services and customer productivity. See also event.

incident analyzer
An add-on module that helps visually demonstrate criminal patterns based on known investigative facts.

incident log
An optional function available under the job completion checker.

incident management
The process of managing unexpected operational events with the primary objective of returning service to customers as quickly as possible.

incident owner
A user or group of users who have permission to manage an incident, including editing the incident and its response plan.

incident response plan
A list of tasks and actions that should be taken when a particular type of incident occurs. For example, there is a list of government regulatory bodies to be notified should a medical company have an incident where the user database is hacked.

incident response plan phase
A user-definable distinct period or stage within an incident response plan.

incident response platform (IRP)
A tool for incident response planning, management, orchestration, and mitigation. The purpose of an IRP is to make incident response efficient and compliant.

inclined posture
Property of a slanted typeface such as italic. See also upright posture.

include data set
In aggregate backup and recovery processing, a data set in the selection-data-set include list. This data set is processed using aggregate backup.

include directive
A preprocessor directive that causes the preprocessor to replace the statement with the contents of a specified file.

include-exclude file
A file containing statements to determine the files to back up and the associated management classes to use for backup or archive. See also include-exclude list.

include-exclude list
A list of options that include or exclude selected files for backup. An exclude option identifies files that should not be backed up. An include option identifies files that are exempt from the exclusion rules or assigns a management class to a file or a group of files for backup or archive services. See also include-exclude file.

include file
A text file that contains declarations that are used by a group of functions, programs, or users.

include list
A required list in the selection data set that identifies the include data sets that are to be processed using aggregate backup.

include statement
A preprocessor statement that directs the processor to retrieve a specific file that contains instructions and data the program might need.

inclusion mask
A mask that is used to include a type of data in a data collection algorithm.

inclusive gateway
A gateway that creates alternative or parallel paths in a process flow where all outgoing sequence flow condition expressions are evaluated independently.

inclusive reference
A call from a segment in storage to an external symbol in a segment in the same path. An inclusive reference does not cause overlay of the calling segment.

inclusive run cycle
A run cycle that specifies the days and times that a job stream is scheduled to be run. Exclusive run cycles take precedence over inclusive run cycles. See also calendar, run cycle.

inclusive segment
A type of segment that can be in virtual storage simultaneously. See also exclusive segment.

incoming call
In X.25 communications, a call arriving at the data terminal equipment (DTE).

incoming-call packet
A call supervision packet transmitted by a data circuit-terminating equipment (DCE) to inform a called data terminal equipment (DTE) that another DTE has requested a call.

incoming change set
A change set in a stream or repository workspace that flows to a user repository workspace. An incoming change set is present in a workspace flow target, but not in the workspace itself.

incoming link
A link from the current (target) artifact to a source artifact, such as a Validated By link from a requirement to a test case. See also outgoing link.

A status of a unit of recovery that occurs when DB2 for z/OS fails after beginning its two-phase commit processing. When DB2 for z/OS is restarted, this status indicates that changes made to data are consistent. See also in-abort.

incomplete class declaration
A C++ class declaration that does not define any members of a class. Until a class is fully declared or defined, you can use the class name only where the size of the class is not required.

incomplete type
A type that has no value or meaning when it is first declared. There are three incomplete types: void, arrays of unknown size and structures, and unions of unspecified content.

incore request queue
Another name for the request queue to emphasize that the request queue is held in memory instead of on a DASD.

incremental aging
A feature that can be used to age dates based on a specified number of years (Y), months (M), weeks (W), days (D), or any combination of these units. For example: [+ or -] nY. See also age, semantic aging, target aging.

incremental backup

  1. A backup that saves only the data that has changed since the last backup. There are two types of incremental backups: cumulative and differential backups.
  2. A copy of all database data that has changed since the most recent successful full backup operation. An incremental backup is also known as a cumulative backup image because each incremental backup includes the contents of the previous incremental backup. See also full backup.
  3. The process of backing up files or directories, or copying pages in the database, that are new or changed since the last full or incremental backup. See also cumulative backup, selective backup.

incremental bind
In DB2 for Linux, UNIX, and Windows, a process by which SQL statements are bound during the execution of an application process, because they could not be bound during the bind process, and VALIDATE(RUN) was specified. See also automatic bind, incremental bind statement, static bind.

incremental bind statement
In DB2 for Linux, UNIX, and Windows, SQL statements that are neither fully static nor fully dynamic. Like static statements, they are embedded within an application, but like dynamic statements, they are prepared during the execution of an application. See also deferred embedded SQL, dynamic SQL, incremental bind, static SQL.

incremental build
In Eclipse, a build in which only resources that have changed since the last build are considered. See also full build.

incremental case
The number of cases that the retailer will sell from the promotion.

incremental development
An iterative development strategy in which the system is built by adding more and more functionality at each iteration. See also evolutionary development, iterative development.

incremental harvest
A harvest that indexes new, modified, and removed data objects on volumes or file servers.

incremental manufacturer profit
Any additional manufacturer profit generated from a promotion.

incremental manufacturer revenue
Any additional manufacturer revenue generated from a promotion.

incremental save operation
In Backup, Recovery, and Media Services, a backup operation that includes only those objects in a control group that have been changed since the last backup operation or archive operation.

incremental snapshot
A backup of new or changed data since the last backup at a certain point in time.

incremental unit
The number of units that a retailer sells throughout a promotion period.

incremental value
A measure of incremental profit change.

incremental version
A component version that contains only the artifacts that are different from the previous version, as opposed to a full version. See also full version, version.

incremental volume
The cumulative growth of a product group in terms of volume as a result of adding additional products to the group.

incumbent solution
The current best solution, which allows CPLEX to prune from the search tree all subproblems for which the value of the objective function is no better.

incumbent supplier
The most recent supplier of an item in an auction.

See system input definition.

To begin a line farther in from the margin than the other lines.


  1. The action of indenting.
  2. The condition of being indented.
  3. The blank space produced by indenting.

Pertaining to an object (row, table, or table space) that is neither a parent nor a dependent of another object.

independent control
The process by which each processor in a complex controls its own job input, scheduling, and job output. See also centralized control.

independent data item
In COBOL, a data item in the Working-Storage Section that has no relationship to other data items.

independent disk pool
One or more storage units that are defined from the disk units or disk-unit subsystems that make up addressable disk storage. An independent disk pool contains objects, the directories that contain the objects, and other object attributes such as authorization ownership attributes.

independent fileset
A fileset that has its own inode space.

independent logical unit (ILU)

  1. A unique connection to an application program that is able to activate an LU-to-LU session without assistance from a system services control point (SSCP). An independent logical unit can be used as either a primary logical unit (PLU) or a secondary logical unit (SLU), and can have one or more active LU-to-LU sessions at a time. Currently, only an LU 6.2 can be an independent LU. See also dependent logical unit.
  2. A logical unit (LU) that can both send and receive a BIND command, and which supports single, parallel, and multiple sessions.

independent mode
A means of isolating a processor for testing purposes. A processor so designated will only process jobs that are both routed to it and are themselves designated to execute on a processor in independent mode.

independent workstation
See programmable workstation.


  1. An optimized list of terms, a set of identifiers for the data sources that were examined, and metadata about those terms and data sources.
  2. In the IBM MQ Administration Interface (MQAI), a means of referencing data items.
  3. A set of URIs that point to resources in one or more lifecycle tool so that the set of URIs can be queried together. Access depends on the identity of the authenticated user.
  4. A set of pointers that is logically ordered by the values of a key. Indexes provide quick access to data and can enforce uniqueness of the key values for the rows in the table.
  5. To add or edit the attribute values that identify a specific item or object so that it can be retrieved later.
  6. A relative number (1-64) of an image catalog entry within an image catalog.
  7. A computer storage position or register, the contents of which identify a particular element in a table.
  8. In VisualAge RPG, the identifier of an entry in a part, such as a list box or a combination box.
  9. A list of entries arranged alphabetically to provide fast access to information.
  10. A table that contains key values or references for locating information in an indexed file.

index area
A storage area that contains one or more indexes, which are used to perform full-text searches against documents in an object store.

index cache
A buffer in the memory that holds index pages.

index class
See item type.

index class subset
In earlier Content Manager, a view of an index class that an application uses to store, retrieve, and display folders and objects.

index class view
In earlier Content Manager, the term used in the APIs for index class subset.

index-controlled partitioning
A type of partitioning in which partition boundaries for a partitioned table are controlled by values that are specified on the CREATE INDEX statement. Partition limits are saved in the LIMITKEY column of the SYSIBM.SYSINDEXPART catalog table.

index data consistency
A condition in which all of the data rows in a database are valid data rows, all of the data rows are referenced in the index, there are no index keys referencing nonexistent data rows, and the column values in each index key match the corresponding column values in the referenced data rows. If the database does not maintain index data consistency, the database is corrupted.

index data item
In COBOL, a data item in which the contents of an index can be stored without conversion to subscript form.

indexed data name
In COBOL, a data name identifier that is subscripted with one or more index names.

indexed instruction
An instruction that uses an indexed address.

indexed object
In MO:DCA, an object in a MO:DCA document that is referenced by an Index Element structured field in a MO:DCA index. Examples of indexed objects are pages and page groups.

indexed organization
In COBOL, the file structure that identifies each record by the value of one or more keys within that record.

indexed segment
In a database, a segment that is located by an index and termed an index target segment.

indexed sequential access method (ISAM)
An access method that can be used for either direct or sequential update or retrieval.

indexed VTOC
A volume table of contents (VTOC) with an index that contains a list of data set names and free space information, which allows data sets to be located more efficiently.

index entry

  1. A catalog entry that describes the index component of a key-sequenced cluster, alternate index, or catalog. An index entry contains the index component's attributes, passwords and protection attributes; allocation and extent information; and statistics.
  2. An intersection of two thinly-populated dimensions.


  1. In ACIF, a process of matching reference points within a file and creating structured field tags within the MO:DCA-P document and the separate index object file.
  2. See harvest.

indexing segment
The segment in an index database that contains a pointer to a segment containing data (the indexed segment), and termed an index pointer segment.

index key
The set of columns in a table that is used to determine the order of index entries.

index level
A set of index records that order and give the location either of records in the next lower level or of control intervals in the data set that it controls.

index manager
The component of the database manager that controls creating, removing, maintaining, and accessing the indexes defined in a database.

index matching
A task that the query complier performs to determine whether the query compiler can use an index to evaluate an SQL, SQL/XML, or XQUERY query. To use an index over XML data, the data types specified in the query search condition must match indexed data types, and the query return set must be more restrictive than the set of the nodes that are indexed.

index name
In COBOL, a user-defined word that names an index.

index object file
A file created by ACIF that contains Index Element (IEL) structured fields, which identify the location of the tagged groups in the AFP file. The indexing tags are contained in the Tagged Logical Element (TLE) structured fields.

index over XML data
In DB2 databases, an index that provides efficient access to nodes within an XML document by providing index keys that are based on XML patterns.

index partition

  1. A VSAM data set that is contained within a partitioning index space.
  2. An index on a data partition of a partitioned table. See also partitioned index.

index pointer segment
In a secondary index, the segment that contains the data and pointers used to index the index target segments.

index queue

  1. A list of requests to either add or remove a document to or from text search services.
  2. A list of requests for main and delta index builds to be processed.

index record
In the Virtual Storage Access Method (VSAM), a collection of index entries that are retrieved and stored as a group. See also data record.

index scan
The accessing of an index by the database manager to narrow the set of qualifying rows before accessing a base table, to order output, or to retrieve requested column data directly when all of the requested data is in the index.

index search
A searchable part of the online information. Using index search, application programmers can create and write their own index search topics for their applications. The system-recognized identifier for the object type is *SCHIDX.

index self-join
A type of index scan that is a union of many small index scans, each one with a single unique combination of lead-key columns and filters on non-lead-key columns. The union of small index scans results in an access path that uses only subsets of the full range of a composite index.

index set
In the Virtual Storage Access Method (VSAM), the set of index levels that are above the sequence set. An index is comprised of the index set and the sequence set. See also sequence set.

index source segment
In a database, the segment containing the data from which the indexing segment is built. It can be the same as the indexed segment or one of its dependents.

index space
A page set that is used to store the entries of one index.

index specification
In a federated system, a set of metadata about a data source object index that the query optimizer uses to expedite the processing of distributed requests. When a nickname is created for a data source object, the federated server gathers index information about that object and stores the information in the global catalog.

index target segment
In a database, the segment pointed to by a secondary index entry, that is, from an index pointer segment.

In OSI, a service primitive issued by a service provider to call a procedure by a service user.


  1. In TME 10 Distributed Monitoring, an icon that displays the status of a monitor that has been associated with it.
  2. In the RPG licensed program, a 2-character code that is used as a logical variable or statement label.
  3. A 1-character or 2-character code that is used by a program to test a field or record or to tell when certain operations are to be performed.
  4. A device that can be set to a prescribed state, usually according to the result of a previous process or on the occurrence of a specified condition in the equipment. The device usually indicates the existence of the state and may be used to determine the selection among alternative processes.
  5. A measurable variable used for risk assessment.
  6. An internal switch used by a program to remember when a certain event occurs and what to do when that event occurs.

indicator column
A 4-byte value that is stored in a base table in place of an LOB column.

indicator pool
A collection of risk indicators.

indicator variable
A variable that is used with a host variable to represent the SQL null value in an application program. See also extended indicator variable.

indifferent weight (IW)
A sorting weight used in Arabic sorting to accommodate characters such as Fathatan, Dammatan, Kasra, and so on. See also alphanumeric weight, case weight, diacritical weight, mark weight, special weight.

indirect activation
In VTAM, the deactivation of a lower-level resource of the resource hierarchy as a result of a deactivation command naming a higher-level resource. See also direct activation.

indirect argument passing
A method of passing arguments in which a pointer to the argument value is included in the parameter list. See also direct argument passing.

indirect block
A block containing pointers to other blocks.

indirect destination
In CICS, a type of transient data destination that points to another destination within the destination control table, rather than directly to a queue.

indirect discount
An LTL rating process in which the shipper receives a specified discount when the carrier uses an indirect route to deliver the freight. The carrier might plan an indirect route from the origin to the destination, which includes a stop at a carrier depot or service center. An indirect route is typically longer than a direct route but the shipper receives a bigger discount. See also direct discount.


  1. A mechanism for connecting objects by storing, in one object, a reference to another object. See also dereference.
  2. In the C and C++ languages, the application of the unary operator * to a pointer to access the object to which the pointer points.

indirection class
See reference class.

indirect list data set (ILDS)
In a HALDB, an IMS system index data set. The ILDS is a repository for the indirect pointers used for PHDAM and PHIDAM databases, which include one ILDS per partition.

indirect list entry (ILE)
In a HALDB, an entry in an indirect list data set.

indirect list entry key (ILK)
In a HALDB, a unique token that is assigned to a segment in PHDAM and PHIDAM databases when the segment is created. Eight bytes in length and stored in the prefix of the segment, the ILK uniquely identifies every segment in PHDAM and PHIDAM databases.

indirect managed resource
A managed resource that is enclosed within a hosting domain, which identifies the managed resource and provides the services for locating the managed resource. An indirect managed resource can be located using its hosting domain without being registered independently. See also direct managed resource, hosting domain.

indirect pointer
In a HALDB, a pointer stored in the indirect list data set and used to eliminate the need to update pointers throughout other database records when a single partition is reorganized.

indirect procurement
The purchasing of products that affect the operation of a company and that are consumed by internal stakeholders, rather than the external customer or client. Examples include legal and professional services, office supplies, travel services, marketing services, IT services or products, and utilities.

indirect routing
In Internet communications, the transmission of a datagram to a router for forwarding to a destination that resides on a different network from the source.

indirect speech recognition
Identification of words from spoken input read from a file. See also direct speech recognition.

indirect spend
An amount of money used to acquire roducts and services that are necessary to run a company but are not directly linked to a finished product. Examples of these products are technology, office supplies, and utilities.

individual address
In communications, an address associated with a particular station on the network. See also group address.

individual mailbox restore
See mailbox restore.

individual privilege
A privilege that is granted on a single data object.

individual producer
An independent broker who is contracted to sell a carrier's products or an employee of an insurance carrier who is responsible for selling a carrier's products.

individual resource
A single resource that can be uniquely identified, such as a person or computer. Individual resources are used when a specific resource must be allocated to a task. For example, the Mary Smith resource must perform the Approve Payment task.

In Document
A list of documents in the Gentran Server for Windows browser that the system received but that have not yet been processed by the user. Once the documents are processed (printed or exported) the documents are transferred to the In Drawer.

Indo-European language
A language that was spoken in the area from Northern India to the Western fringes of Europe and that can be traced back to a single, original proto-language, which is called Proto-Indo-European (PIE). Some of the Indo-European subgroups are Germanic, Italic (Romance), Slavonic, Celtic, Hellenic, and Baltic. The approach to lexical analysis is very similar for all Indo-European languages.


  1. In CICS, the state at a particular point in a distributed UOW for which a two-phase commit sync point is in progress.
  2. The status of a unit of recovery that occurs when the database manager fails after it finishes its phase 1 commit processing and before it starts phase 2. At emergency restart, the status of the unit of recovery is indoubt until the commit coordinator indicates to the database manager whether the unit of recovery is to be committed or rolled back.

indoubt resolution
The process of resolving the status of an indoubt logical unit of work to either the committed or the rollback state.

indoubt transaction
A transaction in which one phase of a two-phase commit completes successfully but the system fails before a subsequent phase can complete.

indoubt unit of recovery
The status of a unit of recovery for which a sync point has been requested but not yet confirmed.

indoubt unit of work (indoubt UOW)
A transaction or database update that has been prepared for commit, but is not yet committed. If a failure occurs before the in-doubt unit of work is committed, IMS must resolve all the work whose status is in doubt.

indoubt UOW
See indoubt unit of work.

indoubt window
The period between the sending of a sync point request to a remote system and the receiving of a reply. During this period, the local system does not know whether the remote system has committed its changes. If processing fails in the in-doubt window, recovery processing must resolve the status of any work that is in doubt.

In Drawer
A list of documents in the Gentran Server for Windows browser that were received and processed.

induction variable
A controlling variable of a loop.

industrialized hybrid cloud
A hybrid cloud that adds repeatable automation and management services for enterprise workload management and quality of services features like scaling, performance, security, and compliance.

industry accelerator
A set of code assets that contains processes, rules, and data objects that are specific to an industry use case and are used to accelerate the time to production.

industry capability map
A logical view of the business competencies that an industry needs to process.

industry code
A one-character code that represents a data standard or industry.

industry group
In a blockchain, a group that provides technical advice on industry trends and encourages best practices by making recommendations to participants.

industry model innovation
Innovating the industry value chain by moving into new industries, redefining existing industries or creating entirely new ones, also by identifying/leveraging unique assets. See also enterprise model innovation, revenue model innovation.

Industry Standards report
A report of issues found on the user's web application and relevant information according to a selected industry standard. AppScan Industry Standard reports include SANS Top 20, OWASP Top 10, and WASC Threat Classification.

Internet Daemon. It provides TCP/IP communication services in the OS/390 USS environment.

See file information data structure.

In information analysis, a statistical measure in which probabilities are interpreted as degrees of belief.

inferred data type
In information analysis, the optimum data type that is identified during data analysis that can be used for an individual data value.

An industry-standard specification that defines an I/O architecture used to connect servers, communications infrastructure equipment, storage, and embedded systems.


  1. In decimal floating-point operations, a signed value that is mathematically greater in magnitude than any other decimal floating-point number. See also decimal floating-point number.
  2. A name referring to an indefinitely great number.
  3. In binary floating-point concepts, a value with an associated sign that is mathematically greater in magnitude than any binary floating point number.

The modification of a word to convey grammatical information, typically by means of an affix. Common language markings include gender, tense, number or person.

The state of a resource or unit of recovery that has not yet completed the prepare phase of the commit process.

inflight task
During emergency restart, a task that caused records to be written to the system log, but for which no syncpoint record has been found for the current LUW. This task was interrupted before the LUW completed.

A publish/subscribe mechanism. When an infobus is available, one unit of logic can subscribe to an event of a specified name and is notified when the event occurs (is published) in a second unit of logic. An infobus is available in EGL Rich UI.

The information that is shown directly under the cursor as a user moves the cursor over a button. Info-cursors can be user-defined.

In AIX, a program that displays and allows navigation within hypertext.

InfoPrint Server
An element of z/OS that supports printing on local printers and remote printers in a TCP/IP or SNA network. With InfoPrint Server, users can submit print requests from remote workstations in a TCP/IP network, from z/OS UNIX System Services applications, from batch applications, from VTAM applications (such as CICS and IMS), and from SAP R/3.

informational constraint
A rule used by the SQL compiler to improve query performance without requiring additional data verification. See also constraint.

informational event
In OSI, an event that is a part of normal operation but that may be of interest to an observer. Information events are logged but do not generate a message to the operator.

informational message

  1. In Q replication and event publishing, a message about the status of the Q Capture program, a Q subscription, or a publication.
  2. A message that provides information about the system and is not the result of an error condition. This message does not require a response.

information analysis
The data analysis processes that assess the quality of data, profile the data for integration and migration, and verify any external data sources.

information architect
A person skilled in the practice of information architecture who leads the design of the information system. See also information architecture, User Centered Design.

information architecture
The organization, structure, classification, navigation, linking, and language system of information, such that the information is easy to use, easy to find, and easy to understand. See also information architect.

information area
A part of a window in which information about the object or choice that the cursor is on is displayed. The information area can also contain a message about the normal completion of a process.

information asset
A piece of information that is of value to the organization and can have relationships, dependencies, or both, with other information assets.

information card
A display of high-level information about dashboard, workspace, or report content, such as owner, contact information, date modified, and an optional thumbnail view of the dashboard, workspace, or report.

information category
IBM-defined grouping of online books into a bookshelf. The books in the bookshelf can be accessed using the InfoSeeker function on the system or by workstations using the IBM Library Reader licensed program or the BookManager licensed program.

information center
A collection of information that provides support for users of one or more products, can be launched separately from the product, and includes a list of topics for navigation and a search engine.

information development (ID)
Designing, developing, reviewing, and testing information for IBM products such as online help and user guides.

Information Development Workbench (ID Workbench, IDWB)
A structured XML authoring and editing application for writers of technical documentation in IBM.

information disclosure attack
An attack that attempts to obtain system-specific information about a website, such as software distribution, version numbers, patch levels, and the location of backup files or temporary files.

information display
A display that presents information to a user, such as the status of the system, but that rarely requests a response.

information element
In ISDN, the messages that are exchanged over the D-channel between the system and ISDN. For example, when a call is set up, a message is sent to the network containing several information elements, one of which is the number of the remote system. Other information elements may be present.

information format (I format)
A format that is used for the transfer of information.

information frame (iFrame)

  1. In web pages, an HTML element that is used for embedding external content into a page.
  2. In communications, a transmission frame that is sequentially numbered and used to transmit data.
  3. In video compression, a frame that has been compressed independently of any other frames.

information governance policy
A natural language description of an information governance subject area. An information governance policy is made up of information governance rules. See also business glossary, policy.

information governance rule
A natural language definition of a characteristic for making information assets compliant with corporate objectives.

information interchange
The sending and receiving of data in such a manner that the information content or meaning assigned to the data is not altered during transmission. (A) The term information interchange is used with respect to ANSI standards for the sending and receiving of data. The terms exchange and data interchange are used with respect to IBM systems and devices.

information item
A questionnaire item that does not ask for a response, such as greetings, section headings, and closing statements.

information leakage
The exposure of sensitive data from a website, which may help an attacker exploit the application.

information lifecycle management (ILM)
A policy-based file-management system for storage pools and file sets. See also General Parallel File System.

information management
The process of collecting, adding, updating, and maintaining information in a central repository in order to provide consistent, accurate, and current information to other systems or outputs.

information management database
A systems management tool that is used to collect, organize, and keep track of problems and their resolutions.

Information Management System (IMS)
Any of several system environments that have a database manager and transaction processing that can manage complex databases and terminal networks.

Information Management System/Virtual Storage (IMS/VS)
A database/data communication (DB/DC) system that can manage complex databases and networks.

information mining
The automated process of extracting key information from text (summarization), finding predominant themes in a collection of documents (categorization), and searching for relevant documents using powerful and flexible queries.

information model
A model that represents the categorization and classifications of user assistance content into information deliverables based on the way in which users interact with that content. An information model is one component of an information architecture.

information pane
A pane that helps the user to confirm their selection in the data tree by displaying related information, such as the level and attributes.

Information Presentation Facility (IPF)
A tool used to create online help on a programmable workstation. This tool is used by the application programmer and the information author.

Information Presentation Facility file (IPF file)
The source file in which the application help is stored.

information repository
A persistent storage area for data and other application resources.

information set (infoset)
A collection of information that is the core concept of IBM StoredIQ applications. There are two types of infosets: system infosets and user infosets.

information source
The part of the capture specification which defines where an emitted business information item is obtained. There must be an information source for each item of emitted business information.

information system
A system that consists of people, machines, voice communications, data communications, and methods organized to accomplish specified operations on data that represent information. Information systems support the running of the customer's business, but do not necessarily make up the customer's business.

Information Technology Infrastructure Library (ITIL)
A series of documents, created by the Office of Government Commerce in United Kingdom, that are used to help implement a framework for IT Service Management (ITSM). This framework defines how to organize the system and network management departments within specific organizations.

information theory
The branch of learning concerned with the study of measures of information and its properties. (I) (A)

information type

  1. A classification of information to which a particular master or local schedule applies. Each master or local schedule can apply to more than one information type. An information type identifies content or legal significance rather than form. "Employment contract", "deed of trust", "transfer of ownership" are typical (if overly simple) examples of information types, while "email", "spreadsheet", and "memo" are not.
  2. A category for topics that defines the purpose of the information, such as concept, reference, and task.

information unit

  1. In information development (ID), a logically related subset of documentation. Examples of information units include manuals, product messages, or the online help for one or more related features.
  2. A set of information as defined by either upper-level process protocol definition or upper-level protocol mapping.

information use model
A model that represents the specific user interactions with user assistance content in specific product use contexts.

See information set.

infoset ancestry
Detailed information that is provided for an infoset. The information includes item type, item name, item description, and time and date an item was created.

infoset API
An API that is used to create either system infosets or user infosets.

infoset-generation process
A process that generates a report about infoset actions, including name, description, status, and which infosets it was last used on.

InfoSphere Information Server engine
The software that runs tasks or jobs, such as discovery, analysis, cleansing, or transformation. The engine includes the server engine, the parallel engine, and the other components that make up the runtime environment for InfoSphere Information Server and its product modules.

InfoSphere Streams instance
The InfoSphere Streams runtime system.

infrared technology (IR)
A technology that uses infrared radiation for wireless transmission between devices. Infrared transmission requires an unobstructed line of sight between the transmitter and the receiver.


  1. The components of the computing model, excluding the application framework. Components include data access services, application/workgroup services, presentation services, communication services, object management services, distribution services, common transport semantics, transport services (SNA/APPN, TCP/IP, OSI, etc.), signaling and control plane, LAN, WAN, channel, emerging, and base operating system.
  2. Any piece of equipment that has an IP address, such as a node, chassis or switch.

infrastructure as a service (IaaS)
The delivery of a computer infrastructure, including server functionality, networking functionality, data center functionality, and storage functionality as an outsourced service.

infrastructure component
Any resource of a computer available to do work, such as the processor, main storage, or a line.

infrastructure initiative
A set of infrastructure programs or projects to achieve an infrastructure change in support of a business/transformation initiative or technology objective.

infrastructure master plan (IMP)
A grouping of project plans composed of two types of projects--steady state and change agent--implemented against a common infrastructure. The IMP views all project plans developed and executed by individual project managers of the team as a single plan for the purpose of managing the infrastructure.

Infrastructure Services
A GTS line of business consisting of four service lines: Resiliency Services, Mobility Services, Networking Services and Systems Services, aligned by an integrated Sales and Delivery organization. Designed to provide end-to-end composite services to clients.

infrastructure test
A test which focuses on issues resulting from vulnerabilities in commercial products or Internet infrastructure.


  1. To feed data into a system for the purpose of creating a base of knowledge.
  2. To add a document to a file archive collection. When the document is added, retention policies and system metadata are applied and an audit log entry is written. Documents are automatically ingested after they are committed to the collection file system.

ingested network traffic
Captured network traffic that has been processed by the forensics decapping process.

The process of feeding data into the system to create its base of knowledge.

To import data into Hadoop.


  1. To copy resources or attributes from a parent to a child.
  2. To automatically associate an access control list (ACL) with a newly created object without requiring administrative action.

inheritable depth
The maximum number of levels through which a permission can be inherited. There are three possible settings: this object only, this object and immediate children, and this object and all children.


  1. The process of passing access rights to a child item from a parent item by default.
  2. An object-oriented programming technique in which existing classes are used as a basis for creating other classes. Through inheritance, more specific elements incorporate the structure and behavior of more general elements.
  3. The process of referencing attribute instances based on hierarchy structure or on item relationships. Currently, InfoSphere MDM for PIM only supports referencing attribute instances from parent categories in a location hierarchy. Attribute instances can be specified in lower levels in the location hierarchy to override values referenced from parent locations.

inheritance resolution
The process of using the span attribute, the precedence attribute, or both to determine which policies at ancestor nodes apply to a specific target node.

inherited ACE
A non-editable access control entry (ACE) whose source type is inherited.

inherited price list
A price list that retains all the products, their list prices, percentage or absolute adjustments, if any, effectivity dates, and the status and currency of a master price list. An inherited price list may be created to give certain discounts or charges to a specific customer or group of customers.

inherited property
A property value that cascades from a container, such as a folder or subproject.

inherited value
An attribute value that is inherited from the parent object by a child object.

To temporarily suspend the function of an alarm panel, an emergency shutdown system, or a fire and gas system. For example, during maintenance work, it might be necessary to inhibit an alarm circuit. The circuit can be reactivated when it is safe to do so.

In VTAM, pertaining to a logical unit (LU) that has indicated to its system services control point (SSCP) that it is temporarily not ready to establish LU-LU sessions. An initiate request for a session with an inhibited LU will be rejected by the SSCP. The LU can separately indicate whether this applies to its ability to act as a primary logical unit (PLU) or a secondary logical unit (SLU). See also disabled, enabled.

in-house application
See company application.

A name token that consists of a single character which represents the first character of a name. Initials are handled differently than multi-character name tokens (names).

Initial Access Response Seconds (IARS)
A parameter specified in the definition of a storage management subsystem (SMS) storage class indicating the desired response time to locate, mount, and prepare a removable storage medium for data transfer.

initial action
An action attached to a rule flow task that is performed before the task is executed.

initial baseline print coordinate
In architecture, the baseline coordinate of the first print position on a logical page. See also initial inline print coordinate.

initial cap
A capital letter occurring as the first letter of a word in a phrase. To set a phrase in initial caps.

initial CDD
A customization definition document (CDD) to which placeholders have not yet been added.

initial chaining value (ICV)
In Cryptographic Support, an 8-byte, pseudo-random number used to start a cipher block chaining operation.

initial context
Starting point in a namespace.

initial data
A type of inbound data that arrives when a new session is bound. This is commonly called a "good morning" message.

initial entry
A first pass of entry, where all available data is entered by an operator.

initial heap
A heap that is controlled by the HEAP run-time option and designated by a heap_id of 0.

initial heap segment
The first heap segment. A heap consists of the initial heap segment and zero or more additional segments or increments.

initial inline print coordinate
In architecture, the inline coordinate of the first print position on a logical page. See also initial baseline print coordinate.


  1. The process that reads the initialization statements and creates the tables and control blocks used throughout the JES3 program.
  2. Actions performed by the CICS system to construct the environment in the CICS region to enable CICS applications to be run.

initialization data set
A group of statements that are used when the system is initialized.

initialization file

  1. For DB2 ODBC applications, a file containing values that can be set to adjust the performance of the database manager.
  2. An OSI Communications Subsystem file that contains a set of commands that activate OSI Communications Subsystem resources each time OSI Communications Subsystem is started.

initialization fullselect
The first fullselect in a recursive common table expression that gets the direct children of the initial value from the source table.

initialization input data set
A data set that is used by IBM MQ for z/OS when it starts.

initialization parameter
An installation-specified parameter that is used when the system is initialized.

initialization point
A user-defined constant or variable used to initialize the attributes of an object.

initialization stall
In CICS, a wait that occurs during initialization when a CICS system appears to be running normally but is not actually progressing through the various stages of initialization.

initialization statement
An installation-specified statement that is used when the system is initialized.

initialization vector
A binary string that is used by some block cipher modes in an exclusive-OR (XOR) operation with the first block of data. It is used to help hide any patterns that might appear in the first block of ciphertext and, therefore, makes various cryptographic attacks more difficult.


  1. In programming languages, to set the starting value of a data object.
  2. To prepare a system, device, or program for operation; for example, to initialize a diskette.
  3. To set the addresses, switches, or the contents of storage to zero, or to the starting value set by the manufacturer.


  1. The assignment operator followed by an expression or multiple expressions for aggregate variables.
  2. An expression used to initialize data objects. In the C++ language, there are three types of initializers: an expression followed by an assignment operator initializes fundamental data type objects or class objects that have copy constructors; an expression enclosed in braces ( { } ) initializes aggregates; and a parenthesized expression list initializes base classes and members using constructors

A status condition during which a server of the entire cluster or storage array is set up for the first time.

initial key
An encrypted character string lock that specifies some of the terms and conditions for acquiring software products that are described in an initial custom configuration. See also replacement key.

initial machine load (IML)
A procedure that prepares a device for use.

initial menu
The menu that is specified in the user profile to be the first menu displayed after a user signs on.

initial microcode load (IML)
The loading of microcode from a storage medium into memory.

initial microprogram load (IML, IMPL)
The action of loading microprograms into computer storage.

initial notice
The first hold notice that a custodian receives for a particular preservation obligation.

initial option set
For a scenario that uses an option set group, the first option set that the scenario used. The initial option set is used to determine when all of the option sets of an option set group have been used at least once.

initial program

  1. A user-profile program that runs when the user signs on and after the command processor program QCMD is started. QCMD calls the first program.
  2. In COBOL, a program that is placed into an initial state every time the program is called in a run unit.

initial program load (IPL)

  1. The process that loads the system programs from the system auxiliary storage, checks the system hardware, and prepares the system for user operations.
  2. The process of loading the operating system and other basic software into main storage.

initial project proposal (IPP)
Developed by the PDT during the concept phase. It consists of the following documentation: PDT charter template, business transformation operations process (BTOP) top sheet, BTOP business template (concept phase items), architecture solution proposal document (APD), and initial integrated project plan (This plan is typically done by the solution project manager or technical project manager). The IPP may contain additional documentation from other sources as deemed appropriate by the PDTL.

initial reference
A well-known reference associated with an identifier.

initial stack segment
The first stack segment. A stack consists of the initial stack segment and zero or more additional segments or increments.

initial state
In COBOL, the state of a program when it is first called in a run unit.

initial thread
The thread that is started automatically by the system when a job or process is started. See also secondary thread.

initial value
A value assumed until explicitly changed.

initiate request
A network services request sent from a logical unit (LU) to a system services control point (SSCP) requesting that an LU-LU session be established.

initiating attachment
An attachment used to launch a workflow.

initiating consumer
A consumer that is actively connected to Sterling Integrator/Sterling File Gateway (SI/SFG) to retrieve or add files from or to their mailboxes.

initiating logical unit (ILU)
The logical unit that first requests that a session be initiated. The ILU can be one of the session participants, in which case it is also called the origin logical unit (OLU), or it can be a third-party logical unit that identifies the participants and chooses the OLU. See also destination logical unit, origin logical unit.

initiating task
The job management task that controls the selection of a job and the preparation of the steps of that job for execution.

A process that tells the print processor to search for available reports requested by that distribution and print them. The initiation is performed on the RL panel.

initiation queue
A local queue on which the queue manager puts trigger messages.

initiation request
The name of the first process in a collaborative workflow cycle.


  1. A group of related changes that is related to specific releases and applications. See also change.
  2. A group of related solutions, projects and assets which, when developed and deployed, has a transformational effect on the business. Initiatives are developed in business transformation planning.
  3. A task developed to achieve objectives or close the gap between performance and targets. Initiatives are associated with individual objectives and often known as projects, actions, or activities. See also objective.


  1. An AFT partner that takes the first action in a file transfer, initiating activity.
  2. The role of a node using the two-phase commit protocol when its local transaction program issues a commit operation that begins the two-phase commit flows. The initiator is the root node of a transaction program network. See also responder.
  3. A syntax object in a data stream that signals the beginning of a data object. For example, if a record begins with an asterisk (*), the asterisk would be the record’s initiator.
  4. The part of an operating system that reads and processes control statements from the system input device.
  5. In OSI Communications Subsystem, the application entity that starts an application association.
  6. In distributed queueing, a program that requests network connections on another system. See also responder.
  7. A role created to start and control the progress of an assessment.
  8. The system component that originates an I/O command over an I/O bus or network. I/O adapters and network interface cards are typical initiators.

The job scheduler function that selects jobs and job steps to be run, allocates input/output devices for them, places them under task control, and at completion of the job, supplies control information for writing job output on a system output unit.

injection attack
An attack technique that exploits websites by manipulating input. Common injection attacks are through SQL injection and XPath injection.

injection flaw
A flaw that allows attackers to relay malicious code through a web application to an external system.

ink jet printer
A nonimpact printer in which the characters are formed by projecting particles or droplets of ink onto paper. (T)

ink sign
An execution method for an authored contract or authored amendment contract that records an offline signature by each of the signing parties, interactively online. See also execution.


  1. To replace a function call with a copy of the function's code during compilation.
  2. Pertaining to the placement of a network device so that all traffic must pass through this device before continuing on to the next portion of the network.
  3. Pertaining to spooled input data that is read into a job by a reader.
  4. In Content Manager, the property of an object that is online and in a drive, but has no active mounts.

inline axis (I axis)

  1. The axis along which successive characters in a line are placed.
  2. In architecture, the axis of an I,B coordinate system that extends in the inline direction. The I axis does not have to be parallel to the Xp-axis of its bounding Xp,Yp coordinate space.

inline backup
The process of copying a specific data set to a migration-level-1 volume from a batch environment. Inline backup allows users to back up data sets in the middle of a job.

inline-baseline coordinate system
In architecture, the coordinate system used to present graphic characters. This coordinate system is used to establish the inline and baseline directions for the placement of successive graphic characters within a presentation space.

inline compression
A method for reducing storage space. Repetitive characters, spaces, strings of characters, or binary data is removed as data is written to a container storage pool. See also compression.

inline coordinate
In architecture, the first of a pair of values that identifies the position of an addressable position with respect to the origin of a specified I,B coordinate system. This value is specified as a distance in addressable positions from the B-axis of an I,B coordinate system.

inline copy
A copy that is produced by the LOAD or REORG utility. The data set that the inline copy produces is logically equivalent to a full image copy that is produced by running the COPY utility with read-only access.

inline data deduplication
A method of reducing storage needs by eliminating redundant data. The data is deduplicated as it is written to a container storage pool. See also data deduplication, postprocess data deduplication.

inline data file
A file created by a Data (//DATA) command that is included as part of a job when the job is read from an input device or a database file. The file is deleted when the job ends.

inline direction

  1. In GOCA, the direction specified by the character angle attribute.
  2. The direction in which successive characters are added to a line of text. See also baseline direction.

inline expression policy
A data privacy policy created in a copy service definition that masks data based upon an expression written in JavaScript.

inline extent (I-extent)

  1. In architecture, the Xp-extent when the I-axis is parallel to the Xp-axis or the Yp-extent when the I-axis is parallel to the Yp-axis. The definition of the I-extent depends on the Xp- or Yp-extent because the I,B coordinate system is contained within an Xp,Yp coordinate system.
  2. A measurement of an object in the inline direction.

inline function
A function whose actual code replaces a function call. A function that is both declared and defined in a class definition is an example of an inline function. Another example is one which you explicitly declared inline by using the keyword inline. Both member and non-member functions can be inlined.

inline margin

  1. The place where the first character appears in each line of text.
  2. In architecture, the inline coordinate that identifies the initial addressable position for a line of text.

inline presentation origin
In architecture, the point on the I-axis where the value of the inline coordinate is zero.

inline resource
A resource contained in a print file or a print data set.

inline schema
An XML schema in a Web Service Description Language file (.wsdl).

inline space
The amount of horizontal white space that usually occurs between words in a line.

inline SQL PL
A subset of SQL procedural language that can be used in SQL functions, triggers, and dynamic compound statements. See also compiled SQL PL.

inline task
A unit of work that is defined within an implementation of a business process. See also human task, stand-alone task.

inline XBRL
A standard for embedding XBRL fragments into an HTML document.

A link to an object in a module from another object in the same module, or from an object in a different module in the database.

See intranode management network.

in-motion scale
A scale that is part of a conveyor system allowing the weighing of items as they travel on the conveyor.

in-motion scanner
A permanently fixed bar code scanner that is part of a conveyor system allowing the reading of bar codes on cartons as they pass by the scanner on the conveyor.

See intermediate network node.

inner application
An application that contains the HTML, CSS, and JavaScript parts that run within a shell component. Inner applications must be packaged within a shell component to create a full hybrid application.

inner join
The result of a join operation that includes only the matched rows of both tables that are being joined. See also join, outer join.

The internal structure that describes the individual files on AIX, UNIX, or Linux systems. An inode contains the node, type, owner, and location of a file.

inode number
A number specifying a particular inode file in the file system.

inode space
A collection of inode number ranges reserved for an independent fileset, which enables more efficient per-fileset functions.

The condition of a resource that was active, but is not active now. See also active, inactive.

inoperative package
A package that is not usable because one or more user-defined functions, procedures, or methods on which the package depends were dropped. See also invalid package.

inoperative trigger
A trigger that is not usable because an object on which the trigger depends was dropped or made inoperative or a privilege on which the trigger depends was revoked.

inoperative view
A view that is not usable because a privilege on an underlying table was revoked; a table, an alias, or a function was dropped; a superview was made inoperative; or another view on which the view depends was dropped or was made inoperative.

in-order delivery (IOD)
In Fibre Channel technology, a parameter that, when set, guarantees that frames are either delivered in order or dropped.

inout parameter
A parameter value that is provided as input to a ruleset when it is executed. It can be modified by the execution process and is provided as output when the execution is completed.

in parameter
A parameter value that is provided as input to the ruleset at execution time.

in-place conversion
In DFSMSdss, the process of bringing a volume and the data sets it contains under the control of the storage management subsystem (SMS) without data movement.

in-place editing
A function in which objects, graphs, or tables can be edited without exiting the currently active application.

in-place migration
A data migration strategy that overwrites the existing previous versions of databases. See also side-by-side migration.

in-process version status
The status of the most recently checked-in minor version. Older minor versions have the status Superseded.


  1. Data entered for processing or storage.
  2. An entry point through which an element is notified that it can start, typically because an upstream element, on which it depends, has completed. If the element has all of its required input, then it will start.

input activity
The origin of the process that is the source of the invocation data of the entire process.

input arrival time (IAT)
The user-defined date and time when an operation or an application is planned to be ready for processing.

input block
A data block that has at least one loaded data value.

input branch
The area of a decision, fork, join, or merge that contains the inputs.

input buffer
A software or hardware buffer used to store information before it is processed.

input card
In the Map Designer, a component that contains the complete definition of input for the map, including information such as source identification, retrieval specifics, and the behavior that should occur during processing.

input collection
See data collection.

input control
A control that is used to obtain responses from an interview user. The response may be used to directly set a contract value or employed as a variable that can be passed to an exit or navigation action by means of an expression or condition, or both.

input criteria
Number and types of inputs required to start a task or process.

input data

  1. Data that originates directly from the server. Input data is not derived from calculations performed on existing data.
  2. Data provided to the computer for further processing. See also output data.

input data type
The type of data contained in the input file. Examples are ASCII and PostScript.

input device

  1. A physical device that provides data to a computer.
  2. See input unit.

input event
An atomic event that can be sent to an activity by its parent, or from outside the process. It tells the activity why it has been activated. See also system event.

input field

  1. An area in a presentation space into which the program accepts input.
  2. A field specified in a display file or database file that is reserved for information supplied by a user. See also output field.

input file
A file that has been opened in order to allow records to be read.

input focus

  1. In a graphics environment, a window that defines the scope for processing keyboard input. By default, keyboard events are sent to the client using the window that the pointer is in. However, if the keyboard input is attached to a specific window, events will be sent to the appropriate client regardless of the default pointer position. See also inactive.
  2. The position, indicated on the screen, where a user's interaction with the keyboard appears.

input level
In the transformation model, the hierarchy level at which source data is accessed.

input line
A line, as entered into a source file, to be processed by a formatter.

input link
A link that connects a data source to a stage. See also link.

input list
A list of variables to which values are assigned from input data.

input member
A member whose values are loaded directly into a database, either through manual entry or by input from another computer-based data source. See also calculated member.

input message

  1. Any valid command, transaction, or message switch.
  2. A message that is input into the SWIFT network. An input message has an input header.

input method
A component that converts key strokes into text input that could not otherwise be typed directly, such as characters that are not native to your operating system. For example, the input method component can be used to type Japanese text on an English keyboard.

input mode

  1. In COBOL, the state of a file after running an OPEN statement, with the INPUT phrase specified for that file, and before running a CLOSE statement, without the REEL or UNIT phrase specified for that file.
  2. In MFS, the way in which input fields from certain devices are defined by the user to be scanned by MFS. See also record mode, stream mode.
  3. An open mode in which records can be read from the file.

input node

  1. The point where a service message from a source enters the request flow.
  2. A message flow node that represents a source of messages for a message flow or subflow.

input/output (I/O)
Pertaining to a device, process, channel, or communication path involved in data input, data output, or both.

input/output adapter (I/O adapter, IOA)

  1. A functional unit or a part of an I/O controller that connects devices to an I/O processor.
  2. For devices, the electrical circuits on a logic card that connect one device to another.
  3. A circuit board containing logic and internal software that bridges an internal processor or memory interconnect scheme and an external, common, standard channel or link.

input output area input (IOAI)
An I/O area that is used by the Fast Path DL/I calls that return structural information about DEDBs.

input/output channel (I/O channel)
In a data processing system, a functional unit, controlled by the processing unit, that transfers data between main storage and attached devices.

input/output channel subsystem
See channel subsystem.

input/output configuration data set (IOCDS)
A configuration definition built by the I/O configuration program (IOCP) and stored on disk files associated with the processor controller.

input/output configuration program (I/O configuration program, IOCP)
A program that defines to a system all the available I/O devices and channel paths.

input/output controller (I/O controller, IOC)
A functional unit that combines the I/O processor and one or more I/O adapters, and directly connects and controls one or more input or output devices.

input/output data
Data provided to the computer or data resulting from computer processing.

input/output definition file (IODF)
A linear data set (LDS) that contains I/O definition information. This information includes processor I/O definitions and operating-system I/O definitions. A single IODF can contain several processor and several operating-system I/O definitions.

input/output file
A file opened for input and output use.

input/output operations per second (IOPS)
A standard computing benchmark used to determine the best configuration settings for servers.

input/output PCB (I/O PCB)
Program communication block needed to issue DBCTL service requests.

input/output privilege level (IOPL)
A I/O task level that determines when a task is allowed access to an I/O port.

input/output problem determination (IOPD)
A facility that detects pending I/O requests when VTAM® has sent a request to another part of the network and no response has been received after a certain period of time.

input/output processor (I/O processor, IOP)
A processor dedicated to controlling channels or communication links.

input/output program communication block (I/O PCB)
A TP PCB provided automatically by IMS to an application program that executes in a communication system with TM. The I/O PCB is the mechanism by which a program obtains an input message from a terminal and returns a reply to the terminal that originated the input message. See also alternate program communication block.

input/output section
In COBOL, the section of the Environment Division that names the files and external media needed by an application program. It also provides information required for sending and handling data when the program is run.

input/output statement
In COBOL, a statement that causes files to be processed by performing operations on individual records or on the file as a unit. The input-output statements are ACCEPT, CLOSE, DELETE, DISPLAY, OPEN, READ, REWRITE, SET (with the TO ON or TO OFF phrase), START, and WRITE.

input/output subsystem
That part of the operating system comprised of processes and device managers that provides the mechanisms for data transfer and I/O device management and control.

InputOutput window
In a graphics environment, a kind of opaque window used for input and output. InputOutput windows can have both InputOutput and InputOnly windows as inferiors.

input parameter

  1. In a prepared SQL statement, a value, represented by a “?” placeholder symbol, that must be provided when the prepared statement is executed. See also parameter.
  2. A parameter of an MQI call in which information is supplied.
  3. Data received by a program such as a prompt, 3270 script, custom server, or state table from the program that invoked it. See also system variable.

input partition
In BMS, a partition holding input required by the logic of the program and nominated in the associated RECEIVE MAP command.

input PIN-protection key
In Cryptographic Support, a key-encrypting key that encrypts a personal identification number (PIN) that is received from another location. While a PIN is being used on the system, it remains encrypted under the input PIN-protection key.

input procedure
A set of statements that controls the release of specified records to be sorted.

input ramp
In the IBM 3800 Printing Subsystem, a support on the continuous forms input stacker that puts paper in position as it is pulled into the printer by the transfer station carriage tractor.

input range
The upper and lower input values of an asset that is being calibrated.

input record
A record that contains a logical group of fields that can be mapped to the output format. The input record is allowed only on the input side of the map and cannot be referenced by standard rules or links.

input redirection
The specification of an input source other than the standard one.

input response node
The end point for a mediation response flow from which the service message object is sent to the source.

input sequence number (ISN)
A number assigned by a system to a message received by the system. See also output sequence number.

input service

  1. A service that receives data from external systems.
  2. The function that accepts and queues all jobs that enter the JES system, except for those jobs invoked with the *CALL command.

input service driver (ISDRVR)
A dynamic service program (DSP) that reads batches of jobs from the spool data set and constructs a separate job control table (JCT) entry for each job.

input service job
A job created by the card, tape, or disk reader dynamic service program (DSP) for each batch job written on the spool data set.

input service processing
The process of performing the following tasks for each job: reading the input data, building the system input data set, and building control table entries.

input specification
The means by which a programmer describes input records and their fields, adds RPG functions to an externally described file, or defines a data structure and its subfields.

input stream

  1. A sequence of control statements and data submitted to an operating system by an input device.
  2. In RJE, data sent to the host system. See also output stream.
  3. A group of records submitted as a batch job that contains CL commands for one or more jobs or data from one or more inline data files.

input system
In an MSC network, the system to which the input terminal is attached.

input template
A reference template that is used to construct custom Greex input for a validation.

input terminal
In an MSC network, the terminal from which a primary request originated.

input terminal node
A primitive through which a message is received by a subflow. Each input terminal node is represented as an input terminal of the corresponding subflow node.

input-translation formula
In an editable field, the formula that converts or translates entered information into a specified value or format.

input unit
A device in a data processing system by means of which data can be entered into the system. (I) (A)

input-validation formula
In an editable field, the formula that verifies that the entered information meets the specified criteria.


  1. A request for information in storage.
  2. A request that puts a display station into inquiry mode.
  3. In data communications, a request for information from another system.

inquiry logical terminal
A type of logical terminal that is created automatically by IMS and restricted to non-update transactions. Inquiry logical terminals are created for non-VTAM switched lines.

inquiry message
A message that gives information and requests a reply.

inquiry mode
An operation during which the current job running from a display station is interrupted so that other work can be done. The operator presses the Attn key to put the display station in inquiry mode.

inquiry program

  1. A program that allows an operator to get information from a disk file.
  2. A program that runs while the system is in inquiry mode.

A program that locates load libraries on z/OS DASD devices, reads those load libraries and captures information from load modules.

inquisitor import
A set of programs that load raw Inquisitor data into DB2 tables on z/OS, for z/OS load modules and z/OS UNIX load modules.

See Interoperable Naming Service.

in-scope namespace
In XQuery, a property of an element node that defines a set of namespace bindings that associate namespace prefixes with URIs and defines the set of namespace prefixes that is available for interpreting QNames within the scope of the element. See also qualified name.

in-scope schema type
The built-in data types that are specified in the World Wide Web Consortium XML Schema recommendation or the predefined data types in the namespace http://www.w3.org/2005/xpath-datatypes.

insecure storage
Information and credentials stored on the client's hard drive that have not been protected using cryptographic functions.

insensitive cursor
A cursor that is not sensitive to inserts, updates, or deletes that are made to the underlying rows of a result table after the result table has been materialized. See also cursor, cursor sensitivity.


  1. In text processing, to introduce new characters or text within previously recorded text. The text is automatically rearranged to accommodate the addition. (A)
  2. To introduce data between previously stored items of data.
  3. In LANs, to make an attaching device an active part of the LAN.

insert cursor
The position of the cursor marking where new characters will be added when entering text.

The action of adding a new object into the object set provided to the rule engine for execution.

insertion order
In the IBM MQ Administration Interface (MQAI), the order that data items are placed into a data bag.

insert mode

  1. A keyboard operation that puts new text within existing text at the cursor position.
  2. The source entry utility operation during which source statements are typed in and added as new records in a source member.

insert rule
A condition enforced by the database manager that must be met before a row can be inserted into a table.

insert time clustering table (ITC table)
A table that clusters data according to the time at which it is inserted into the table. An ITC table is similar to a multidimensional clustering table, but an ITC table has no user-specified dimensions; instead, the rows are clustered in a single cell.

insert trigger
A trigger that is activated by an insert operation on the table or view that is specified in the trigger definition. See also delete trigger, instead of trigger, read trigger, trigger, update trigger.

in-session detection
The detection of the in-session pattern in the responses AppScan receives, to verify that it is still logged in.

in-session pattern
A pattern identified in the login page, such as a logout link, that AppScan can use to verify that it is still logged in.

insight as a service
The delivery of insights, such as predictions, conclusions, identification of patterns, and recommendations for specific actions, based on analyzed data.

A process where the quality of received products is checked.

inspection engine
An S-TAP component that filters traffic before it is forwarded to a Guardium system. See also software tap.


  1. To connect hardware to a system.
  2. To add a program, program option, or software program to a computer system in a manner such that it runs and interacts correctly with all programs on the computer.

installable file
A file or set of files that can be included in a particular software deployment. Examples include an installation package, installation files for a patch downloaded from the vendor's website, or a software image. See also software definition.

Installable File System
A subsystem of Tivoli Open System-managed Storage (Open-SmS) client's file system that directs all metadata operations to a metadata server, and directs all data operations to storage devices attached to the Fibre Channel network. See also Fibre Channel.

installable localization pack
A localization pack that can be installed without having to reinstall the program.

installable object
An object that contains a combination of the objects to be installed and list of the objects to be installed, associated with the name of the target library, folder, or path where they must be created when the installable object is installed.

installable service
In IBM MQ on UNIX and Linux systems and IBM MQ for Windows, additional functionality provided as independent component. The installation of each component is optional: in-house or third-party components can be used instead.


  1. The process of preparing a DB2 subsystem to operate as a z/OS subsystem.
  2. A particular computing system, including the work it does and the people who manage it, operate it, apply it to problems, service it, and use the results it produces.
  3. The process of adding a hardware or software component to a computing environment.
  4. A set of artifacts from one or more DB2 database products.

Installation Assistant
An application used to perform system configuration tasks.

installation configuration file
A file that defines product updates to be distributed in a push-to-client environment. See also push-to-client.

installation-defined exit
The location in source code at which an installation adds an exit point for an installation routine to receive control from the operating system. See also IBM-defined exit.

installation device
A tape or optical device [CD-ROM or a digital video disc (DVD)] that is used on a type D IPL to load Licensed Internal Code (LIC) segments into main storage. The installation device must be on the same input/output processor (IOP) as the load source. This device can be used to load LIC code from the tape or optical device onto the load source during restore or installation operations.

installation directory
A directory in which unique files for a package are stored. See also shared resource.

installation exit
The means specifically described in an IBM software product's documentation by which an IBM software product may be modified by a customer's system programmers to change or extend the functions of the IBM software product. Such modifications consist of exit routines written to replace one or more existing modules of an IBM software product, or to add one or more modules or subroutines to an IBM software product. See also user exit.

installation exit routine
A routine written by a user to take control at an installation exit of an IBM software product.

installation factory
A factory that creates installation packages.

installation image
A copy of the software, in backup format, that the user is installing, as well as copies of other files the system needs to install the software product.

installation-initiating host (IIH)
A host from which a user installs and configures a DB2 pureScale instance.

installation IPL
The process of loading code into main storage and preparing for system operation from an input/output hardware unit other than the system's primary load-source disk unit. This is also referred to as a type D IPL or D-mode IPL.

installation locale
The UI locale used to install a program. This may be different than the UI locales available for the program itself.

Installation Manager
An application that helps users install, update, roll back, and modify certain IBM product installation packages.

installation media
The media used in the installation of software, usually CD/ROM, CD-R, or tape media provided by IBM or another supplier for the purpose of distributing software to customers. See also distribution media.

installation package
An installable unit of a software product. Software product packages are separately installable units that can operate independently from other packages of that software product.

installation planning representative
See IBM installation planning representative.

installation profile
An object that can be tailored and used to control the automatic installation of a system.

installation program
A program that prepares a software package to run on the computer. During installation, a component of the setup program is commonly copied to and left on the hard drive so that the user can customize the default settings of the program.

installation script
A shell script or executable file created by the developer of an application program to install the program. The script file must follow specific guidelines in order to be compatible with the program installation tools that are provided in the operating system.

installation signature
In a CICS resource, information about when, how, and by whom the resource was installed. See also resource signature.

installation target
The system on which selected installation packages are installed.

installation topology
The physical or logical mapping product components to the computers or nodes where they are installed.

installation verification procedure (IVP)
A program or programs that are run at the end of installation of an IBM licensed program, in order to verify that the program is working correctly.

installation-wide exit
See installation exit.

installed instance
See seat.

installment rule
A rule that specifies different installment payment options that a customer can select.

Installments tool
A feature in the Management Center that can be used to create and manage installment rules to support the payment methods for a site.


  1. A single transaction or subtransaction.
  2. See database manager instance.
  3. A process element, such as a business process definition or case type, at run time, or a deployed pattern.
  4. A specific occurrence of an object that belongs to a class. See also object.
  5. In object-oriented programming, a region of storage that contains a value or group of values.
  6. An individual realization of the operating system with a particular version, configuration, physical location, and identifier.
  7. An entity that consists of resources that are reserved for a particular application or a service.
  8. A software product or component that is installed on a server or logical partition (LPAR).
  9. A set of servers that share a common runtime database, plus their corresponding brokers and queue managers.
  10. An entity to which a set of operations can be applied and that has a state that stores the effects of the operations.
  11. An insertion of a reference on a drawing. Graphical changes to the instance can be made only by editing the original reference definition.
  12. An active process element, for example, the performance of a process.

instance algorithm
A process used by the to track composite applications with multiple instances.

instance data

  1. In object-oriented programming, state information associated with an object.
  2. A type of performance data that consists of response times that are collected every time the transaction is detected. See also hourly average data.

instance document

  1. An XML file that contains facts as defined by a taxonomy. Instance documents contain business reporting data with associated values and contexts.
  2. An XML document that conforms to a particular schema.

instance graph
A graphical view of the streams processing applications that are running on an InfoSphere Streams instance. Color schemes communicate the health of the processing elements and streams as well as other metrics, such as data flow rates or the number of processed tuples.

instance ID
In query management, an identifier in the communications area. An instance ID is used to identify a particular query instance being used by an application program.

instance line
A vertical timeline in a sequence diagram that shows the sequence of messages that an object processes and the states that it enters over its lifetime.

instance method

  1. A method valid for an object instance. An instance method that an object responds to is defined by the object's class or is inherited from an ancestor class. See also class method.
  2. In object-oriented programming, any method that is started with respect to an instance of a class.

instance metric
A metric that returns the result, such as the amount of an order, from one run of the process. See also metric.

instance-owning database partition
In partitioned database environments, the database partition that has the superset of features and products within the cluster. The instance-owning database partition is identified by the host name in the first line of the db2nodes.cfg file and has the smallest database partition number (normally, 0).

instance parameter
A configuration value or setting that is specified for a server instance.

instance record
A particular widget record that contains the data objects pertaining to the identity of any given widget as an instance.

instance-specific information (ISI)
Located within the condition token, information used by a condition handler or the condition manager to interpret and react to a specific occurrence of a condition.

instance statistics
Statistical information that includes information about an application such as instances of different classes and their size, the packages to which the classes belong, the CPU time spent in an instance of a class, and so on. See also package statistics.

instance topology
A transaction topology that displays a specific instance of a single transaction. See also aggregate topology.

instance UUID
In DCE Remote Procedure Call (RPC), an object Universal Unique Identifier (UUID) that is associated with a single server instance and is provided to clients to identify that instance unambiguously.

instance variable
A variable declared for use within the method procedures of a class.

instance vector
See resource identifier.

instant collaboration
A module that provides a user with a read-only list of information about other users who performed similar searches.

instantiable structured type
A structured type that can be used for creating database objects. A structured type that is not instantiable cannot be used for creating database objects; however, such a type can be used to define subtypes which, in turn, can be instantiable.


  1. To bring all resources associated with a resource group online.
  2. To create or generate a particular instance or object of a data type. For example, an instance box1 of class box could be instantiated with the declaration: box box1
  3. To create an instance of a data value by reading that value into a field in a stream. Instantiation is typically performed automatically by passing the data through a Type node, but instantiation information can also be defined or edited manually in the Type node. See also stream.
  4. To represent an abstraction with a concrete instance.

The creation of a database server instance.

instant message (IM)

  1. A message that is sent through an instant messaging system. See also BlackBerry Messenger, iMessage.
  2. A message that is displayed on the recipients computer screen in real-time, as opposed to a regular email message. See also chat.

instant messaging

  1. A system that allows people to exchange text messages (to chat) in real time.
  2. The exchange of text-based information between two or more parties in real time, typically on a mobile device (such as a smartphone).

instant messaging community
A group of people who can chat with each other.

instant messaging reader
A service that listens to external instant messaging servers for messages and triggers policies based on the incoming message data.

instant messaging service
A service that sends instant messages to instant messaging clients through a Jabber server.

instant restore
A restore operation that allows the use of applications on the same disk to which the volume is being restored, while the restoration is in progress.

instant share
A feature that enables a user to share all or part of the screen directly from a chat without having to open a meeting room.

instead of trigger
A trigger that is associated with a single view and is activated by an insert, update, or delete operation on the view and that defines how to propagate the insert, update, or delete operation on the view to the underlying tables of the view. See also after trigger, before trigger, delete trigger, insert trigger, read trigger, trigger, update trigger.

Institute of Electrical and Electronics Engineers (IEEE)
A professional society accredited by the American National Standards Institute (ANSI) to issue standards for the electronics industry.

institute of transportation engineers (ITE)
An international educational and scientific association of transportation professionals, including, engineers, transportation planners, consultants, educators, and researchers. Founded in 1930, ITE facilitates the application of technology and scientific principles to research, planning, functional design, implementation, operation, policy development, and management for any mode of ground transportation.

Pertaining to a data set that is contained within a set of JCL statements.


  1. A program statement that specifies an operation to be performed by the computer, along with the values or locations of operands. This statement represents the programmer's request to the processor to perform a specific operation.
  2. In COBOL, one or more clauses, the first of which starts with a keyword that identifies the instruction. Instructions affect the flow of control, provide services to the programmer, or both.
  3. In REXX, one or more clauses that describe some course of action to be taken by the language processor. Instructions may be assignments, keyword instructions, or commands.

instruction address register (IAR)
A register in the processor that contains the address of the next instruction to be processed.

instructional designer
An individual who analyzes the learning needs of a given audience, plans the instructional specifications to meet those needs, develops instructional materials and activities, develops and implements a system for delivering the instructional materials, and evaluates the user's success at using all instruction and learner activities.

instruction cache (IC)
A cache for providing program instructions to the processor faster than they can be obtained from RAM.

instruction code
A code that describes any special instructions that may be associated with an item, such as handle with care.

instruction data set
In aggregate backup and recovery processing, a data set that contains instructions, commands, or any data the aggregate backup site defines as needed for aggregate recovery at the recovery site.

instruction file
In aggregate backup and recovery processing, one of three aggregate files generated by the aggregate backup process. The instruction file contains the instruction data set.

instruction scan
A specified scan for suspicious instructions that are included in program exit code. This action is typically performed as an auditing priority.

instruction scheduling
An optimization technique that reorders instructions in code to minimize execution time.

Instruction Set Architecture (ISA)
A specification of the POWER processor-based system that is visible to the programmer or compiler writer.

instructor-led learning
An learning model in which an instructor (or teacher) runs the course. See also self-paced learning.

instructor-led online course (ILO)
An e-learning model in which the content is delivered by a live instructor on a specific day and time.

instructor-led training (ILT)
See instructor-led learning.


  1. A legal document with monetary value. Instruments can include cash, cheques, wills, bonds, and stocks.
  2. A device, such as a gauge, transmitter, or switch, that is used to monitor and control plant processes.


  1. The process of including code in a program to monitor or enhance the operation of a system or component.
  2. In application or system software, the monitoring functions that provide performance information and other information to a management system, or the use of such monitoring functions.

instrumentation event
A way of monitoring queue manager resource definitions, performance conditions, and channel conditions in a network of IBM MQ systems.

instrumentation facility component identifier (IFCID)
In DB2 for z/OS, a value that names and identifies a trace record of an event. As a parameter on the START TRACE and MODIFY TRACE commands, it specifies that the corresponding event is to be traced.

instrumentation facility interface (IFI)
A programming interface that enables programs to obtain online trace data about DB2, to submit DB2 commands, and to pass data to DB2.

instrumentation library type interface
A reusable Java library that implements the standard mechanism for interacting with a resource. It is the conduit for retrieving the current values for resources.

Pertaining to devices, such as sensors, meters, PDAs, and appliances, that can capture or integrate digital information, and process it into a system.

instrumented application
An application that is augmented with code so that it can capture and report data for testing.

insufficient anti-automation
The result when a website permits an attacker to automate a process that should only be performed manually.

insufficient authentication
A vulnerability that occurs when a website allows an attacker to access sensitive content or functionality, such as a web-based administration tool, without properly authenticating the attacker's access permissions.

insufficient authorization
A vulnerability that occurs when a website allows access to sensitive content or functionality that should require access control restrictions.

insufficient process validation
A vulnerability that occurs when a website allows an attacker to bypass the intended step sequence of an application.

insufficient session expiration
A vulnerability that occurs when a website allows an attacker to reuse old session identifiers for authorization.

insurance value
The recoverable monetary value of a shipment as established by an insurance company.

In cross-site mirroring, pertaining to the mirror copy data state that indicates that the production and mirror copy have exactly the same contents.

A process in which a client identifies a need and based on those needs, the client will be assessed to determine the services they may be able to access and the assistance they may be able to receive from the organization.


  1. A positive or negative whole number, or zero.
  2. See N-formatted number.
  3. In COBOL, a numeric constant or a numeric data item that does not include any digit position to the right of the assumed decimal point.
  4. In DB2 for i5/OS, a data type indicating that the data is a binary number with a precision of 31 bits.

integer constant
A decimal, octal, or hexadecimal constant. See also decimal constant.

integer expression
An arithmetic expression with only integer type values.

integer programming (IP)
A form of mathematical programming in which the model of a problem includes the additional stipulation that the domain of all the variables is restricted to integers.

integer question
A numeric question that permits only whole numbers as answers.

integer type
An arithmetic data type that consists of integer values. In Ada language, an integer type is a discrete type whose values represent all integer numbers within a specific range.

integer variable
A numeric variable that holds an integer value for each case, such as the response to a question that asks respondents for their exact age or the number of cars they own.

integral object
A character object, an object having an enumeration type, an object having variations of the type int, or an object that is a bit field.

To create a connection between one software application and another package to facilitate data transfer between applications.

integrated account
A sub-account that is summed into accounts in the balance sheet or the income statement.

integrated battery feature (IBF)
Battery backup hardware that protects against power line disturbances such as short-term power loss or brown-out conditions.

integrated cartridge loader (ICL)
A feature that automatically loads tape cartridges that have been placed into a loading rack. Manual loading of single tape cartridges is also possible.

integrated catalog facility (ICF)
A component that provides integrated catalog facility catalogs. See also integrated catalog facility catalog.

integrated catalog facility catalog
A catalog that consists of a basic catalog structure, which contains information about VSAM and non-VSAM data sets, and at least one VSAM volume data set, which contains data about VSAM data sets only. See also integrated catalog facility, VSAM volume data set.

integrated communication adapter (ICA)
A communication adapter that is an integral part of the host processor. See also external communication adapter.

integrated data link control (IDLC)
A full-duplex high-level data link control (HDLC) protocol. It is IBM's implementation of the CCITT Q.922 standard or link access procedure extended (LAPE). IDLC can support point-to-point workstation connections over a full-duplex wide area network (WAN).

Integrated Delivery Center
A physical location from which services are delivered to customers in a local geography.

integrated development environment (IDE)
A set of software development tools, such as source editors, compilers, and debuggers, that are accessible from a single user interface.

integrated fabric
The fabric created by six switches that are cabled together and are configured to handle traffic as a seamless group.

Integrated Facility for Linux (IFL)
A processor that is dedicated to Linux workloads on IBM System z servers. The IFL is supported by the z/VM virtualization and IBM Wave for z/VM software and the Linux operating system.

integrated fare management
A fare collection system in which commuters use a smart card for the entire commute on public transit, including parking garages, subways, and buses. Integrated fare management increases convenience and savings for customers, and reduces operational costs.

integrated file system (IFS)
A function of the IBM i operating system that supports stream input/output and storage management in a manner that is similar to personal computer and UNIX operating systems, while providing an integrating structure over all information stored on a system.

Integrated Information Plan (IIP)
A coordinated plan for all the information for a product release.

integrated installation package (IIP)
A software package which can install an entire WebSphere software stack, such as an application server, a feature pack, and other user files. An IIP can contain several CIPs. See also customized installation package.

Integrated Language Environment (ILE)
A set of constructs and interfaces that provides a common runtime environment and runtime bindable application programming interfaces (APIs) for all ILE-conforming high-level languages.

Integrated Language Environment C (ILE C)
An IBM licensed program that is the C programming language available on the system. The ILE C licensed program uses the ILE model.

Integrated Language Environment COBOL (ILE COBOL)
The IBM licensed program that is the COBOL programming language available on the system, including system-specific functions.

Integrated Language Environment RPG (ILE RPG)
An IBM-licensed program that includes a set of RPG compilers to be used for commercial and business applications on IBM i hosts. The compilers include: System/36E RPG (RPG II), System/38 RPG (RPG III), RPG/400 (RPG III), and ILE RPG (RPG IV).

integrated management module (IMM)
Firmware that consolidates the service processor functionality, Super I/O, video controller, and remote presence capabilities in a single chip on the server system board. The IMM replaces the baseboard management controller (BMC) and Remote Supervisor Adapter II in IBM System x servers.

integrated messaging
A messaging system in which more than one copy of a single message is stored, the copies being kept synchronized by the applications used to access them. See also unified messaging.

integrated package
A package that consists of a group of packages that are installed to the same location and that share UI elements. Some packages support installing to the same integrated package and others must be installed to a new integrated package.

Integrated Portfolio Management Team (IPMT)
Group responsible for WW business performance of a portfolio of product offerings at the global level. Cross functional team comprised of senior executives from BPE, BIE, WWPL and GS responsible for making ongoing business investment decisions. See also project development team.

Integrated Product Development (IPD)
One of two major corporate business processes (with Customer Relationship Management) within IBM. IPD defines how offerings are developed and delivered.

integrated security
A feature that controls which users have access to a database by using OS/400 security controls.

integrated server
A combination of hardware and software that enables the i5/OS operating system to manage storage, removable media devices, virtual Ethernet connectivity, and other attributes of a Windows, Linux, or VMware server. The integrated server hardware includes the processor and memory. All of the integrated server storage is managed by i5/OS.

Integrated Server Support
A feature of the i5/OS operating system that allows users to combine Microsoft Windows, Linux, and VMware servers with i5/OS in a single system. Integrated Server Support can help reduce the cost and complexity of x86-based servers and better manage the delivery of personal productivity applications.

integrated services
A quality-of-service policy that uses the resource reservation setup protocol (RSVP) to provide end-to-end traffic management. In integrated services, an application requests resources from a network. The network handles the data by request.

Integrated Services Digital Network (ISDN)
An international communications standard for sending voice, video, and data over digital telephone lines.

Integrated Services Digital Network call transfer
In DirectTalk, an application that allows you to transfer calls on Nortel DMS-100 switches using Integrated Services Digital Network two B-channel transfer, and on Nortel DMS-100 and DMS-250 switches using Nortel's proprietary Release Link Trunk (RLT) call transfer protocol.

Integrated Services Digital Network two B-channel transfer (ISDN two B-channel transfer)
A call transfer feature defined by Bellcore GR-2865-CORE specification used on Nortel and Lucent switches.

Integrated Services Digital Network user part (ISDN-UP, ISUP)
Part of the SS7 protocol supporting telephony signaling applications. The ISDN user part is defined to carry signaling information relating to digital telephones, terminals, and PABXs in customer premises.

Integrated Solutions Console (ISC)
The core technology of the Autonomic Computing initiative that provides a common, consistent portal-based user interface, which is based on industry standards and component reuse. The Integrated Solutions Console can host common system administrative functions that are provided by server, software, or storage products.

integrated supply chain (ISC)
An IBM process that enables production to occur. An integrated supply chain manages business processes and material across multiple suppliers, platforms, and organizational divisions.

integrated system management processor (ISMP)
A service processor built into some xSeries servers. ISMP is the successor to the Advanced System Management (ASM) processor.

integrated technology element (ITE)
The most basic hardware resource in a PureSystems integrated chassis. See also compute node.

integrated text search server
The Enterprise Content Management text search server that is installed by using the DB2 installation program.

Integrated Virtual Ethernet adapter (IVE adapter)
See Host Ethernet Adapter.

Integrated Virtualization Manager (IVM)
A browser-based management interface that is used to manage a System p or blade server. The IVM can be used to create logical partitions, manage virtual resources such as storage, and view service information related to the server.

Integrated xSeries Adapter (IXA)
A PCI expansion card that can be installed in selected System x models and that provides a high-speed link to a System i product.

Integrated xSeries Server (IXS)
An Intel server that fits inside System i products to support larger Windows application demands.


  1. The software development activity in which separate software components are combined into an executable whole.
  2. Any interface or communication point from an IBM Commerce on Cloud service to a system or service that is external to the IBM Commerce on Cloud service. Integrations can be between a service and an ERP system, payment service provider, or content delivery network.

integration adapter
A set of files, including predefined mapping expressions, that transform data in a data source to the structure required by the target data source. See also data source, mapping, target database.

integration and migration site
An intermediary service that helps facilitate data transfer between a local FTP site and the integration server.

integration broker
A component that integrates data among heterogeneous applications. An integration broker typically provides various services that can route data, as well as a repository of rules that govern the integration process, connectivity to various applications, and administrative capabilities that facilitate integration.

integration component
An optional component that provides the user interface to the Gentran Server for Windows Application Integration and Forms Integration subsystems.

integration engine
An application that transmits business data in Sterling B2B Integrator to support data management, translation, transformation, and routing services.

Integration Exchange Format (IXF)
A protocol for transferring tabular data among various software products.

integration flag
A workflow property that indicates that the workflow is used to migrate data from staging tables into records.

integration framework
A set of applications that facilitate two-way data exchange between a Tivoli Process Automation Engine-based product and external applications in real time or batch mode.

integration message
Data that makes up an integration transaction and is processed as a single unit.

Integration Object
A Java bean that encapsulates an interaction with a host screen. Integration Objects are constructed from macros and can be included in web services or HATS EJB projects.

integration server

  1. A server to which SmartCloud Notes administrators upload CSV files to change user account and user profile attribute values.
  2. A server from which SmartCloud Notes administrators download journal files that have records of different types of user activity.

integration service
A service that performs data translation and flat-file conversations, including fax services. See also Advanced Integration service, service.

integration test enablement (ITE)
A software test methodology that focuses on increasing test capacity and efficiency by enabling test automation and test asset reuse.

integration test environment
An IBM provisioned runtime environment that can be used to test code, patches, fixes, site releases, and other updates before deploying to the quality assurance environment.


  1. The quality of data that exists as long as destruction, alteration, loss of consistency, or loss of data are prevented.
  2. In computer security, assurance that the information that arrives at a destination is the same as the information that was sent.

integrity processing
The process of populating identity and generated columns, refreshing materialized query tables, propagating updates to staging tables, and performing constraints checking. See also set integrity pending.

integrity protection
The set of controls that prevents users from accessing or changing any objects on the system, including user data, except by using the system-provided interfaces that enforce authority rules.

Intel L.E.A.D
Data entry module for investigating individuals or groups suspected of criminal or terrorist activity. Intel L.E.A.D continuously searches all databases to find relationships and patterns relevant to the investigation.

Pertaining to systems and devices that can sense, analyze, and act on their own. Intelligent systems can see and model the future to improve decision making.

intelligent agent

  1. A Java-based software component that is capable of learning certain behaviors over time through complex autonomic algorithms. Intelligent agents can have many different capabilities, from simply monitoring for certain events to more complex actions like analyzing network problems, monitoring disk space, or managing storage.
  2. Software that monitors conditions or actions on a network node and contains logic enabling it to respond to these conditions or actions.

intelligent calculation
A method that tracks which data blocks have been updated since the last calculation.

intelligent compression
See data deduplication.

intelligent controller node control block (ICNCB)
A control block in VTAM that represents a channel-attached communication controller or cluster controller.

intelligent network (IN)
A telephone network that includes programmable software not resident on the switch. It allows the service provider to provide special services, such as special call-handling, that are not dependent on the capabilities of the switch.

intelligent page
A page that is based on platform capabilities that deliver a unified presentation and architecture, rapid assembly of multiple component types including feeds, widgets, and portlets, and rich media that provide access to dynamic web pages, enabling real-time web-page analysis and channel-delivery analysis.

intelligent peripheral (IP)
A voice processing system (such as DirectTalk) that provides enhanced services such as voice response, speech recognition, text-to-speech, voice messaging, and database access in an advanced intelligent network.

intelligent peripheral interface (IPI)
A standard developed by ANSI that defines the electrical, data link protocol, and functional interfaces.

Intelligent Platform Management Interface (IPMI)
A standard for controlling intelligent devices that monitor a system. It provides for dynamic discovery of sensors in the system and the ability to monitor the sensors and be informed when the sensor's values change or go outside certain boundaries.

intelligent power distribution unit (iPDU)
An electrical device that controls power distribution, provides circuit protection, and monitors the power and temperature of the environment.

Intelligent Printer Data Stream (IPDS)
An all-points-addressable data stream that allows users to position text, images, graphics, and bar codes at any defined point on a printed page.

intelligent routing
The distribution of output from the PDF subsystem in multiple ways based on values specified in a mapping program and the Print Services Facility (PSF) configuration object. The entire input spooled file or any segment of the input spooled file is electronically mailed as a PDF file, stored as a PDF stream file in the integrated file system, spooled as a PDF file, spooled as an Advanced Function Presentation (AFP) file, or any combination of those. See also mapping program, PDF subsystem.

intelligent storage controller
A controller that contains two redundant RAID controllers that manage the disks and associated hardware within a storage group.

A measure of usage or utility over an interval length.

intensive mode recording (IMR)
An NCP function that forces the recording of temporary errors for a specified resource.

intentional backorder
The dropping of an order into backordered status instead of created status at order creation time.

intent propagation
A condition handled internally by IMS by which processing intent for one segment can propagate to related segments depending on the type of processing and the kind of relationship. It determines the compatibility of scheduling processing applications in parallel or serially.

intent scheduling
In IMS or SQL/DS, ensuring that a particular segment type of a database is accessible for potential update by only one task at a time.


  1. Any type of online or offline communication with a customer.
  2. A continuing cycle of reciprocal action between a user and one or more software applications through input devices (a keyboard, mouse, file server, and so on) and output devices (a display, printer, file server, and so on).

interaction designer
An individual who designs user interfaces and conducts usability tests. See also user experience leader.

interaction endpoint
A service requester or provider.

interaction group
A group that defines the interaction between the consumer application and the OSLC provider application.

interaction mapping class
The Java class that defines the links between the provider application and the consumer application.

interaction pattern

  1. A template that describes a generic pattern to define the interaction and the exchange of information between agents and operations.
  2. A communication method for sending or receiving messages in a service interaction. Examples of interaction patterns include request/reply, one-way interaction, and publish/subscribe.

interaction point
A place in a touchpoint at which to present an offer. Interaction points contain default filler content in cases where the runtime environment does not have other eligible content to present. Interaction points can be organized into zones.

interaction query class
A Java class that defines the WHERE clause for the query condition that is used to retrieve the resource data from the provider application.

interaction strategy
A strategy or plan for handling customer interactions in a campaign.

interaction style
The manner in which autonomic managers interact with managed resources to access state information or to change the state of the managed resources. The four interaction styles are retrieve-state, receive-notification, perform-operation, and call-out-request.

interaction type
A type of messaging interaction, such as publish, subscribe, publish/subscribe, or request/reply.


  1. Pertaining to a program or system that alternately accepts input and responds.
  2. Pertaining to the dialog-like exchange of information between people and a computer. See also batch.

interactive agency
A vendor preferred by IBM to help the organization with website design, content development, and banner generation.

interactive channel
A representation of a touchpoint that is used to coordinate all of the objects, data, and server resources that are involved in interactive marketing.

Interactive Chart Utility (ICU)
A menu-driven component of the Graphical Data Display Manager (GDDM) with which non-programmers can display, print, or plot charts, graphs, and diagrams.

Interactive Connectivity Establishment (ICE)
The method used by two clients to determine the best path for exchanging audio and video data through the TURN Server during a call. The ICE methodology is based on the STUN and TURN protocols.

interactive console
A console that can be used to build and test REST APIs from a web browser.

interactive data definition utility (IDDU)
A function of the operating system that can be used to externally define the characteristics of data and the contents of files.

interactive dump formatter
An enhancement to the IMS offline dump formatter that is used to format IMS dumps through a series of interactive menu-driven panels rather than by creating or editing a DFSFRMAT data set.

Interactive Experience and Mobile (IX)
An IBM group that integrates strategy, data, and design to deliver enterprise grade mobile and Internet of Things (IoT) solutions to capitalize on sensor technology and embed mobile wireless connectivity to smart devices.

interactive experience and mobility (iX)
A discipline that combines user eperience design with mobile development.

interactive flowchart
A flowchart that divides customers into smart segments. Interactive flowcharts can be used to assign a profile to a segment when a behavioral event or system event indicates that a visitor re-segmentation is needed.

interactive graphical mode
A series of panels that prompts for information to complete the installation.

interactive interface
A system facility which controls how different users see and work with the system by means of user profiles. When signing on, the interactive interface makes available those parts of the system authorized by the profile. The interactive interface has sets of selection-and data-entry panels through which users communicate with the system.

interactive job

  1. A job that runs interactively on a Windows desktop.
  2. A job started for a person who signs on to a work station. In the capacity planning tool, interactive jobs cause interactive and non-interactive transactions. See also batch job.

interactive mode
In query management, the query mode associated with a query instance that allows users to interact with the query commands while a procedure is running.

Interactive Problem Control System (IPCS)
A component of MVS and z/OS that permits online problem management, interactive problem diagnosis, online debugging for disk-resident abend dumps, problem tracking, and problem reporting.

interactive process design
The development of deployable processes through modeling, testing, and revision by business users.

interactive processing
A processing method in which each operator action causes a response from the program or the system. See also batch processing.

interactive session
A work session in which there is an exchange of communication between a 3270 application and the 3270 terminal service recorder.

interactive source debugger (ISDB)
A function of the Application Development ToolSet feature that is used for source-level debugging of programs on i5/OS.

interactive SQL

  1. A set of SQL statements that is provided through an interface such as the Command Center or command line processor. These statements are processed as dynamic SQL statements. For example, an interactive SELECT statement can be processed dynamically using the DECLARE CURSOR, PREPARE, DESCRIBE, OPEN, FETCH, and CLOSE statements.
  2. A function of the DB2 Query Manager and SQL Development Kit for i5/OS licensed program that allows SQL statements to run dynamically instead of in batch mode. Every interactive SQL statement is read from the work station, prepared, and run dynamically.

Interactive Storage Management Facility (ISMF)
An Interactive System Productivity Facility (ISPF) application that provides an interactive set of space management functions for users and storage administrators.

interactive subsystem
A subsystem in which interactive jobs are processed.

Interactive System Productivity Facility (ISPF)
An IBM licensed program that serves as a full-screen editor and dialog manager. Used for writing application programs, it provides a means of generating standard screen panels and interactive dialogs between the application programmer and the terminal user. See also Time Sharing Option.

Interactive System Productivity Facility/Program Development Facility (ISPF/PDF)
An IBM licensed program that provides a work environment for the development of programs and the use of functions like Edit and Browse.

interactive terminal facility (ITF)
An asynchronous communications function that allows a system to communicate with applications that can send and receive data, such as electronic mail, memos, library members, and data files.

interactive transaction
The work done by the system when the Enter key or a function key is pressed. See also noninteractive transaction.

interactive URL
A URL that includes forms to be filled out manually by the user.

interactive user profile
An area used by some IBM licensed programs to store information between successive calls of those programs (such as the file and library last used, or the setup last used).

interactive video
Combining video and computer technology so the user's actions determine the sequence and direction the application takes.

interactive view
In 3270 terminal services, real-time access to a host application in the 3270 terminal service recorder editor.

interactive voice response (IVR)
A computer application that communicates information and interacts with the caller via the telephone voice channel.

interapplication messaging (IAM)
A MERVA Link message exchange protocol.

interapplication messaging application support protocol data unit (IM-ASPDU)
An application message that consists of a heading and a body.

interblock gap (IBG)

  1. The space between records on a storage medium.
  2. An area or space on a data medium (tape or diskette) to indicate the end of a physical record or block.

In a GDDM chart, a method of describing the position of one axis relative to another. For example, the horizontal axis can be specified so that it intercepts (crosses) the vertical axis at the bottom, middle, or top of the plotting area of a chart.


  1. A handler used by a web service to authenticate an incoming message, or implement single sign-on.
  2. In JAX-RS, one or more classes that can modify the reading and writing of an HTTP entity body. See also Java API for RESTful Web Services.


  1. The exchange of information between trading partners. Also a set of documents grouped together, such as EDI documents enclosed within an EDI envelope.
  2. To import or export an image with its index from one Content Manager ImagePlus for OS/390 system to another ImagePlus system using a common interchange file or common interchange unit.
  3. A container for all the functional groups of documents (transaction sets) sent from one sender to one receiver in the same transmission.
  4. The sending and receiving of data in such a manner that the content of the data is not altered during transmission. See also exchange.

interchange code
An accepted convention for computer character representation. An interchange code typically defines several code pages. EBCDIC and ASCII are interchange codes.

interchange document profile (IDP)
The Document Interchange Architecture object that contains information associated with each document. For example, the interchange document profile can contain authors, keywords, dates, and so on. The interchange document profile is one of many model objects that DIA has defined to keep information about the document. A profile consists of a set of subprofiles.

interchange format
A print descriptor naming convention required to send a print descriptor from one system to another.

interchange group separator (IGS)
A character used to indicate that blanks were removed from a string of data and are to be reinserted.

interchange node (ICN)
A node that acts as both an APPN network node and a type 5 subarea node to transform APPN protocols to subarea protocols and vice versa. See also migration data host.

InterChange Server
A multi-threaded, Java-based run-time environment that provides distributed system services and executes the WebSphere business integration software components. InterChange Server provides a comprehensive set of technical services, including system management, event management, repository services, error handling, transaction management, data transformation, and messaging.

interchange transmission group
A transmission group that represents a cross-domain connection between an interchange node and any other node that contains a control point.

intercharacter adjustment
In architecture, additional distance applied to a character increment that increases or decreases the distance between presentation positions, effectively modifying the amount of white space between graphic characters.

intercharacter decrement
Intercharacter adjustment applied in the negative I-direction from the current presentation position.

intercharacter gap

  1. See intercharacter space.
  2. In bar codes, the space between two adjacent bar code characters in a discrete code; for example, the space between two characters in Code 39. See also clear area, space.

intercharacter increment
See intercharacter space.

intercharacter space
Horizontal space between two adjacent characters. Intercharacter space can be occupied by portions of oversized or kerned characters.

Inter-Client Communications Conventions Manual (ICCCM)
The manual that contains a detailed set of guidelines for client applications using the Enhanced X-Windows system and the AIXwindows toolkit.

intercluster link
See intersubnetwork link.

intercluster TG (ICTG)
An intersubnetwork transmission group (ISTG) that connects two APPN subnetworks that have the same network identifier. At least one node of the pair connected by an ICTG must be a border node.

In CICS, a term embracing intersystem communication (ISC) and multiregion operation (MRO).

To connect two networks for the purpose of sending and receiving data.

interconnect acknowledgment
A document that is sent to confirm receipt when an EDI transmission travels from one VAN to another.

Pertaining to instrumented systems and devices that work together to share data.

interconnected networks
SNA networks connected by gateways.

interconnect ID
See interconnect identifier.

interconnect identifier (interconnect ID)
A unique code that is used to track data from interconnected systems and processes.

See SNA network interconnection.

This telex box supports various national conventions for telex procedures and protocols.

inter-DB2 R/W interest
A property of data in a table space, an index, or a partition that has been opened by more than one member of a data sharing group for writing by at least one of those members.

Inter-Enterprise Services (IES)
A connection between IBM and a non-IBM entity for the purpose of providing or exchanging information.

interest item
An item that a customer has indicated for recurring or potential purchase. An interest item is stored with quantity information, but not price information. See also shopping cart.


  1. In object-oriented programming, an abstract model of behavior; a collection of functions or methods.
  2. In Java, a group of methods that can be implemented by several classes, regardless of where the classes are in the class hierarchy.
  3. An instance of an adapter template. An interface must be created to use an adapter. The original adapter template remains unchanged. An interface can contain more than one interface element, each of which is a separately executable action.
  4. A collection of operations that are used to specify a service of a class or a component. See also class, port type.
  5. A shared boundary between independent systems. An interface can be a hardware component used to link two devices, a convention that supports communication between software systems, or a method for a user to communicate with the operating system, such as a keyboard.
  6. In Enterprise Service Tools, the contract between the service requester and the service provider expressed as a defined set of operations and the defined message formats for each operation.
  7. A defined set of properties, methods, and collections that form a logical grouping of behaviors and data.

interface address
See network mask.

interface body
In Java, the part of the interface definition that contains the constant and the method declarations for that interface.

interface card
An optional part of a node canister that provides the system with additional host and storage connectivity options.

interface data unit (IDU)
In OSI, data contained in a buffer passed between layers.

interface definition
In DCE Remote Procedure Call (RPC), a description of an RPC interface written in the DCE Interface Definition Language (IDL).

Interface Definition Language (IDL)
In CORBA, a declarative language that is used to describe object interfaces, without regard to object implementation.

interface handle
In DCE Remote Procedure Call (RPC), a reference in code to an interface specification.

interface ID
See IP label.

interface identifier
In DCE Remote Procedure Call, a string containing the interface Universal Unique Identifier (UUID) and major and minor version numbers of a given RPC interface.

interface layer
In Internet communications, the Internet Protocol (IP) layer that is responsible for datagram transmission on a single physical network.

interface map
A map that resolves and reconciles the differences between the interfaces of interacting components. There are two levels of interface maps: operation mappings and parameter mappings.

interface name

  1. See IP label.
  2. A logical name for an Ethernet or token-ring line that is created when TCP/IP is installed on the system. Each name is unique and consists of 1 to 128 characters.

interface node
A node that connects a system to an Internet Protocol (IP) network for file-serving capabilities by using service protocols.

Interface Repository (IR)
A byte-stream file that contains the data used to build the run-time objects.

interface specification

  1. In DCE Remote Procedure Call (RPC), an opaque data structure that is generated by the DCE Interface Definition Language (IDL) compiler from an interface definition. It contains identifying and descriptive information about an RPC interface.
  2. Internet Protocol (IP) information that is used to transfer data in a network. Examples of IP information include an address, network mask, line description, line type, current status, maximum transmission unit, and type of service.

interface system
A grouping of one or more APIs.

interface UUID
In DCE Remote Procedure Call (RPC), the Universal Unique Identifier (UUID) generated for an RPC interface definition using the UUID generator.

interface validation exit
A routine that, when used with the binder, automatically resolves conflicting references within Fortran routines.


  1. The distorted portion of a received signal.
  2. In optics, the interaction of two or more beams of coherent or partially coherent light.

interference suppression device
A mechanism that is used to inhibit the distorted portion of a received signal.

intergroup resolution
The process of determining which policies apply when a policy evaluation set for a decision request contains policies with the same name in different policy groups.

interim client health check (ICHC)
An interview that is used to determine client satisfaction.

interim fix
A certified fix that is generally available to all customers between regularly scheduled fix packs, refresh packs, or releases. See also fix pack, manufacturing refresh, refresh pack, test fix.

interim satisfaction (ISAT)
A possible result of an interim client health check.

interim transfer
A software component that temporarily transfers records to a different location while the original record remains in the system until the final disposition occurs.

interim transfer workflow
A workflow that ensures that the home location of a physical entity or location of an electronic entity is changed to the specified location at the end of the retention period of a phase.

interior gateway
In Internet communications, a gateway that communicates only with its own autonomous system. See also exterior gateway.

Interior Gateway Protocol (IGP)
An Internet protocol that is used by gateways in an autonomous system to transfer routing information.

interlanguage call (ILC)
A call to a procedure or function made by a program written in one language to a procedure or function coded in a different language.

interlanguage communication (ILC)
The ability of routines written in different programming languages to communicate. ILC support enables the application writer to readily build applications from component routines written in a variety of languages.


  1. To automatically create two striped partitions across the drives in a RAID-5 array, both of which use the count-key-data (CKD) record format. See also custom volume.
  2. To arrange parts of one sequence of things or events so that they alternate with parts of one or more other sequences of the same nature and so that each sequence retains its identity.

interleaved bar code
A bar code symbology in which characters are paired, using bars to represent the first character and spaces to represent the second. An example is Interleaved 2 of 5.

interleave fetch
The action of fetching part of a result set from one cursor, fetching part of a different result set from at least one other cursor, and fetching again from the original cursor. Fetches can continue from the open cursors in random order.


  1. In a duplicator, the process of inserting absorbent sheets between successive sheets of the copy paper to prevent set-off. (T)
  2. The simultaneous accessing of two or more bytes or streams of data from distinct storage units.
  3. The alternating of two or more operations or functions through the overlapped use of a computer facility.

See deadlock.

interlocked mode
In printers, a mode that prevents a machine or device from initiating further operations until an operation in process is completed.

intermediary file
A file that is used as a step in file conversions if it is not possible to go from the original format directly to the desired format.

intermediate assistance level
The type of displays that supports all system tasks and uses computer terminology. Complicated tasks can be done using the intermediate assistance level.

intermediate block check
In BSC, a check that verifies each record, rather than the contents of the total block, when large blocks of data are received.

intermediate CDD
A customization definition document (CDD) to which placeholders have been added, but for which placeholder values have not yet been specified.

intermediate certificate
A subordinate certificate that is issued by the trusted root certificate authority (CA) specifically to issue end-entity server certificates. The result is a certificate chain that begins at the trusted root CA, passes through the intermediate certificate, and ends with the SSL certificate issued to the organization. See also certificate authority, trusted root.

intermediate database server
The target of a request from a local application or a remote application requester that is forwarded to another database server.

intermediate data type
In the Distributed Computing Environment (DCE), any of the basic data types in terms of which the other, substantive data types of the interface are defined.

intermediate device
In IPDS architecture, a device that operates on the data stream and is situated between a printer and a presentation services program in the host. Examples include devices that capture and cache resources and devices that spool the data stream.

intermediate evaluation
A process that provides intermediate results on a more frequent basis than the configured service level objective (SLO) evaluation period. The data is provided periodically from the beginning of the SLO evaluation period up to the most recent full intermediate evaluation interval.

intermediate event
An event that occurs after a process has been started, affecting the flow of the process by showing where messages and delays are expected and distributing the normal flow through exception handling. Intermediate event types are message, timer, tracking, and error. See also catching message intermediate event, message intermediate event, throwing message intermediate event, timer event, tracking intermediate event.

intermediate network node (INN)
In APPN, a node that is part of a route between an OLU and a DLU but that neither contains the OLU or the DLU nor serves as the network server for either the OLU or DLU.

intermediate node

  1. A node that is at the end of more than one branch.
  2. On the widget tree, widgets with one or more children.

intermediate representation of a program
The result of the first translation phase of language compilers for the extended program model. The intermediate representation of a program is in the form of machine instruction source and is used as the input to the compiler's final phase, the program resolution monitor.

intermediate routing function (IRF)
A routing function that allows a network location to receive session data from an adjacent location and route it to the next location on the session path.

intermediate routing network
See APPN intermediate routing network.

intermediate routing node (IRN)
A subarea node, which may receive and route sessions that neither originate in nor are destined for network addressable units in that subarea node.

intermediate session routing (ISR)
A type of routing function within an APPN network node that provides session-level flow control and outage reporting for all sessions that pass through the node but whose end points are elsewhere.

intermediate SSCP
An SSCP along a session initiation path that does not own either of the LUs that are involved in a cross-network LU-LU session.

intermediate start
The date and time an operation started after processing was interrupted.

intermediate switch board (ISB)
A configuration of switches for switch-to-switch communication across large networks. See also node switchboard.

intermediate system

  1. In an MSC network, a system through which a message passes on its way from the input system to the destination system, or vice-versa, in which no processing other than routing is performed.
  2. See relay open system.

intermediate system routing
In OSI, the process of selecting the intermediate systems through which a CLNS connection is to be routed. A set of quality-of-service values specifies the basis to be used in routing the connection.

intermediate-text-block character (ITB character)
The BSC transmission control character used to divide a block of text into smaller groups of text for an intermediate block check.

intermediate violation
A type of violation that occurs during an intermediate evaluation process when a metric is breached and is marked without a final actual value.

intermediate write
A type of update in which all changes made to checkpoint data are recorded. See also final write, primary write.

intermessage delay
The elapsed time between the receipt of a system response at a terminal and the time when a new transaction is entered.

Pertaining to a shipment that typically travels by both truck and rail.

The procedure of defining an atom.

internal applicant
A candidate that has applied for a position from within the same organization at which he/she currently works.

Internal Audit and Business Controls (IABC)

internal block diagram
A diagram that shows the internal structure or decomposition of a block into its parts or subsystems. See also block diagram.

internal CCD table
A CCD table that is not a registered replication source and therefore cannot be subscribed to. An internal CCD table is identified by the CCD_OWNER and CCD_TABLE columns for the row of the associated registered replication source. See also consistent-change-data table, external CCD table.

internal cloud
See private cloud.

internal command
A command that is processed directly by and that controls the command-line interface (CLI).

internal contact
The contract contact who represents the internal party for purposes of activity and notification.

internal copy group
A copy group within a print data set instead of within a form definition.

internal data

  1. In COBOL, the data described in a program excluding all external data items and external file connectors. Items described in the Linkage Section of a program are handled as internal data.
  2. Data that is recognized only by the procedure or OPM program that defines it. Local data is deleted when the procedure returns control to the calling program or procedure. See also external data.
  3. Data that is initialized within the model file along with its declaration. See also external data.

internal data set
See message data set.

internal data structure
The format of other data stored internally by a program or function. Used to perform type conversion on argument lists.

internal date
In Tivoli Workload Scheduler for z/OS, a two-digit year format used to handle dates. To handle dates before and after 31 December 1999 correctly, Tivoli Workload Scheduler for z/OS uses an origin year of 72 for the internal century window. This means that internally the year 1972 is represented as 00 and 2071 is represented as 99.

internal decimal item
See packed decimal format.

internal dependency
A relationship between two operations within an occurrence, in which the first operation (the predecessor) must successfully finish before the second operation (the successor) can begin.

internal domain
A domain that is included in the content scan and that appears in the list of starting URLs.

internal error log
An area in writable control storage in which environmental records are recorded for each error that can be retried.

internal event
An event trigger that refers to a change in an entity’s metadata.

internal file connector
In COBOL, a file connector that is accessible to only one program in the run unit.

internal label
The machine-readable label that describes data on a medium. The internal label for standard label tapes is recorded in the header label and magnetically recorded on the tape media. See also external label.

internal leading

  1. In architecture, a font design parameter referring to the space provided between lines of type to keep ascenders separated from descenders and to provide an aesthetically pleasing interline spacing. The value of this parameter usually equals the difference between the vertical font size and the font baseline extent.
  2. The space above and below the text character shapes that provides an aesthetically pleasing interline spacing. The value of this parameter often equals the difference between the vertical font size and the baseline extent for the text characters of a font. See also external leading.

internal library definition
A body of data, such as a character group definition, code page definition, or page format definition, that can be accessed or edited only through PMF. Internal library definitions can be used by other licensed programs after they are built into external library members by PMF.

internal link
In the Integration Flow Designer, a solid line displayed by an expanded map component that visually represents the source and target of the map.

internal local area network (ILAN)
A local area network (LAN) that allows APPC and APPN communications between operating systems running on the same system without requiring a physical communications link. The connection takes place within the lower levels of the software. Communications to other systems requires a physical link.

internal lock
A mechanism used by CICS to protect individual resource definitions against concurrent updates.

internally authenticated user
A user who is authenticated by a password stored in the database server. See also externally authenticated user.

internal medium map
See internal copy group.

internal microprogram instruction (IMPI)
The complex instruction set computer (CISC) processor on which the licensed programs run.

internal object

  1. A structured field that can be included as part of a resource or a print job (data set or file), but that cannot be accessed separately.
  2. An object that the system program uses to store the information needed to perform some system functions. Internal objects cannot be displayed by a user. For example, you cannot use a display command (like the Display Library [DSPLIB] command) to display internal objects. See also external object.

internal organization
An organization that is a business or other organizational unit of the company customer hierarchy.

internal parameter
In PTOCA, a parameter whose current value is contained within the object. See also external parameter.

internal party
The collective participants of a contract who represent the company customer.

internal party user
An internal user who can access a contract and participate in its collaboration.

internal path
The System z internal PCIe infrastructure for IBM 10GbE RoCE Express features. The internal path of a 10GbE RoCE Express feature is determined based on how the feature is plugged into the System z I/O drawers.

internal PO
See internal purchase order.

internal purchase order (internal PO)
A purchase order or request to an internal vendor, such as a storeroom. See also external purchase order.

internal PVC segment
A permanent virtual circuit (PVC) segment that is between two frame handler subports in the same frame-relay node.

internal queued direct I/O
See HiperSockets.

internal rate of return (IRR)

  1. The interest rate received for an investment, based on anticipated expenses and income that will occur at regular periods
  2. The interest rate that makes the present value of cash flows in an evaluation period plus the terminal market value equal to the initial market value.

internal reader
A facility that enables jobs to be submitted to JES from time-sharing logons, started tasks, or other jobs.

internal reference
A reference whose definition is contained within the active drawing.

internal resource lock manager (IRLM)
A global lock manager that resides in its own address space and provides the option of keeping most of its control blocks in local storage rather than the common storage area.

internal response time
Elapsed time from the message to start a transaction being received by CICS until the time that the transaction ends.

internal routine
In REXX, a routine that exists inside the user's program and is identified by a label.

internal service
A service that runs solely inside Sterling B2B Integrator to support the general runtime environment. Although internal services accept parameters and produce results, they do not interact directly with external systems.

internal space object
An index that tracks the internal space objects that store message information. The internal space object is an internal object that is automatically created in the QUSRSYS library when the Start Mail Server Framework (STRMSF) command is used.

internal status
The state of a job or job stream instance internally on the IBM Workload Scheduler engine. The internal status is unique to IBM Workload Scheduler. See also status.

internal storage

  1. Array managed disks (MDisks) and drives that are held in enclosures and in nodes that are part of the clustered system.
  2. All main and auxiliary storage in the system.

internal synchronization
The process of integrating a company's internal systems so that all data stores are in agreement.

internal system journal
A journal that is used by IBM programs to manage and recover some system functions such as system-managed access-path protection. Internal system journals cannot be used explicitly by users.

Internal Terminal Emulator (ITE)
An emulator that allows the use of a bitmapped display as a terminal, through command-line mode from the login screen.

internal throughput rate (ITR)
The number of completed transactions per processor-busy second. (Processor busy seconds can be calculated by multiplying elapsed seconds by the processor utilization percentage).

internal trace

  1. A CICS trace facility that is present in virtual storage. When CICS detects an exception condition, an entry always goes to the internal trace table, even if you have turned tracing off.
  2. In CICS, an option whereby trace entries are written to an internal control region table. The table, which can be specified to wrap when full, is most appropriate if the user does not need to capture a large number of trace entries.

internal trace table
A table of events that is maintained in internal memory for purposes of problem diagnosis.

internal user
A user who belongs to an internal organization.

International Components for Unicode (ICU)
An open-source, portable set of C/C++ and Java libraries for Unicode support, software internationalization, and globalization that is designed to give applications the same result on all platforms.

International Electrotechnical Commission (IEC)
The international standards-setting organization responsible for electrical and electrotechnical issues. IEC often cooperates with ISO via technical committees on the definition of standards. See also International Telecommunication Union.

internationalization rule
Business rules and common codes associated with the making of the Sterling Selling and Fulfillment Foundation functionalities for international use.

internationalized program
A program that can be localized without source code modification, by the addition or replacement of resource bundles. An internationalized product accesses language-specific services, such as sorting, through well-defined APIs, typically calling host platform APIs or associated libraries (such as ICU). See also globalized program, localized program.

International Organization for Standardization (ISO)
An international body charged with creating standards to facilitate the exchange of goods and services as well as cooperation in intellectual, scientific, technological, and economic activity.

International Organization for Standardization/International Electrotechnical Commission 10646 UCS-2 level 1 (ISO/IEC 10646)
An international encoding scheme that has full character data integrity with Unicode. ISO/IEC 10646 assigns 16 bits for each character, which can be used to represent most of the written languages in the world. The ISO/IEC 10646 character set is supported by System i products with a fixed character set.

International Program License Agreement (IPLA)
An IBM licensing agreement for distributed and mainframe software that is sold on a one-time charge basis.

international standard
A standards document that is given final approval by the International Organization for Standardization.

International Standards Organization
See International Organization for Standardization.

International Technical Support Organization (ITSO)
An IBM organization that provides information technology (IT) professionals and customers with technical information, assistance, guidance, and training. ITSO publishes Redbooks that supplement product manuals by describing installation experiences and scenarios and providing other useful information gathered by the companies' own systems and customer engineers. ITSO also conducts forums and training workshops for IT professionals.

International Telecommunication Union (ITU)
A United Nations treaty agency whose mission is to ensure that all nations have access to telecommunication services. The ITU works closely with all standards organizations to form an international uniform standards system for communication. It comprises three branches: telecommunications standardization, telecommunications development, and radiocommunication. See also European Telecommunications Standards Institute, International Electrotechnical Commission.

International Telecommunication Union Telecommunication Standardization Sector (ITU-T, Telecommunication Standardization Sector)
The part of the International Telecommunication Union (ITU) that is responsible for developing recommendations for telecommunications.

International Telegraph and Telephone Consultative Committee
See International Telecommunication Union Telecommunication Standardization Sector.

International Telegraphic Alphabet Number 2 (ITA-2)
A CCITT-defined coded character set used in the international Telex communication services, worldwide.

The worldwide collection of interconnected networks that use the Internet suite of protocols and permit public access.

In TCP/IP, a collection of interconnected networks that function as a single, large network.

Internet Architecture Board (IAB)
The technical body that oversees (at a high level) the work of the Internet Engineering Task Force (IETF). The IAB approves the membership of the IETF.

Internet Assigned Numbers Authority (IANA)
An organization that defines a hierarchy for naming tables and columns and for deriving numerical object identifiers (OIDs). IANA assigns identifiers to companies that use the SNMP protocol.

Internet client
A program (or user) that uses the Internet to make requests of and to receive results from an Internet server program. Different client programs are available to request different types of Internet services. A web browser is one type of client program. File transfer protocol (FTP) is another.

Internet Connect
A service available at select IBM locations that provides Internet access via web browser login where wireless or Ethernet connectivity exists. It is intended for temporary visitors and vendors hosted at IBM locations.

internet connection
A users' connection to either a collection of interconnected networks that function as a single, large network or the worldwide collection of interconnected networks that use the Internet suite of protocols and permit public access.

Internet Content Adaptation Protocol (ICAP)
A high-level protocol for requesting services from an Internet-based server.

Internet Control Message Protocol (ICMP)
An Internet protocol that is used by a gateway to communicate with a source host, for example, to report an error in a datagram.

Internet Control Protocol (ICP)
The VIrtual NEtworking System (VINES) protocol that provides exception notifications, metric notifications, and PING support.

Internet domain
A domain that is controlled by an organization and that uniquely identifies it on the Internet. Domain names are formed by the rules of the Domain Name System (DNS).

Internet drafts
Proposals, techniques, and mechanisms that document the Internet Engineering Task Force (IETF) work in progress and that define protocols and their characteristics in an internet. After the drafts are approved, they become Requests for Comments (RFCs).

Internet email address
The address that is used for email communication over the Internet between users from different companies.

Internet Engineering Steering Group (IESG)
The executive committee of the Internet Engineering Task Force (IETF). The IESG reviews and oversees the work produced by individual IETF working groups and charters all new working groups.

Internet Engineering Task Force (IETF)
The task force of the Internet Architecture Board (IAB) that is responsible for solving the short-term engineering needs of the Internet. The IETF consists of numerous working groups, each focused on a particular problem. Specifications proposed as standards typically undergo a period of development and review before they are adopted as standards.

Internet gateway
A gateway between a user’s system and the Internet.

Internet host
A computer that is connected to the Internet or an intranet. An Internet host might run more than one Internet server program. For example, the Internet host might run an FTP server to respond to requests from FTP client applications. The same host might run an HTTP server to respond to requests from clients who are using web browsers. Server programs typically run in the background (in batch) on the host system.

Internet Inter-ORB Protocol (IIOP)
A protocol used for communication between Common Object Request Broker Architecture (CORBA) object request brokers. See also Common Object Request Broker Architecture.

Internet Key Exchange (IKE)
A protocol that, when used with IPSec, supports the automatic negotiation of security associations as well as the automatic generation and refresh of cryptographic keys. Generally, IKE is used as part of virtual private networking.

Internet layer
In Internet communications, the layer corresponding to the network layer in Open Systems Interconnection (OSI) architecture.

Internet Management Specification (IMS)
A draft specification for an open standard for managing Internet resources and services.

Internet Message Access Protocol (IMAP)
A protocol that allows a client to retrieve and manipulate mail messages that are stored on a server.

Internet Message Access Protocol server (IMAP server)
A server that uses IMAP to provide access to multiple server-side folders.

Internet name
See fully qualified domain name.

internet object
In Tivoli NetView, a node or a network that can be accessed by the Internet Protocol.

Internet of Things (IoT)
The global network of endpoints that can capture or generate data. For example, a smartphone, smart watch and back-end server might all communicate with each other, sending data back and forth, or even to additional devices within the network.

Internet Protocol (IP)
A protocol that routes data through a network or interconnected networks. This protocol acts as an intermediary between the higher protocol layers and the physical network. See also Internet Protocol version 4, Internet Protocol version 6, Transmission Control Protocol.

Internet Protocol interconnectivity (IP interconnectivity, IPIC)
Intersystem communication in which CICS regions communicate using a TCP/IP network.

Internet Protocol Security (IPsec)
A set of protocols that provide cryptographic security services at the network layer. See also virtual private network.

Internet Protocol version 4 (IPv4)
The fourth, and most widely deployed revision in the development of the Internet Protocol. See also Internet Protocol, Internet Protocol version 6.

Internet Protocol version 6 (IPv6)
The sixth revision in the development of the Internet Protocol. It is the next generation after IPv4. See also Internet Protocol, Internet Protocol version 4.

Internet router
A device that enables an IP host to act as a gateway for routing data between separate networks that use a specific adapter.

Internet scanner
A software application that provides security vulnerability detection and analysis for routers, servers, computers, desktop computers, and firewalls on a network.

Internet Security Association and Key Management Protocol (ISAKMP)
A protocol that provides the mechanism to establish Security Associations (SA) and cryptographic keys in an Internet environment. ISAKMP establishes the security characteristics and cryptographic keys to be used in a virtual private network (VPN).

Internet server
A program (or set of programs) that accepts requests from corresponding client programs over the Internet and responds to those clients over the Internet.

Internet server application programming interface (ISAPI)
The Internet server application programming interface supported by IIS. Developers use this interface to create programs, called extensions, that extend the capabilities of IIS.

Internet service provider (ISP)
An organization that provides access to the Internet.

Internet site document
A document that contains configuration settings for an Internet protocol -- HTTP, LDAP, POP3, IMAP, SMTP Inbound, and DIIOP. Service providers use Internet site documents to configure Internet protocols for hosted organizations.

Internet Small Computer System Interface (iSCSI)
An IP-based standard for linking data storage devices over a network and transferring data by carrying SCSI commands over IP networks. See also Small Computer System Interface.

Internet Storage Name Service Protocol (iSNS Protocol)
A protocol that is used by a host system to manage iSCSI targets and iSCSI discovery. iSCSI initiators use the iSNS Protocol to locate the appropriate storage resources.

Internet suite of protocols
Networking standards defined by the Internet Engineering Task Force (IETF), for example, TCP/IP.

Internet Wide Area RDMA Protocol
A computer networking protocol that is used to transfer data efficiently.


  1. Pertaining to a job or job stream in a remote Tivoli Workload Scheduler network that is referenced by an internetwork dependency defined for a job or job stream in the local network.
  2. Any wide area network connecting more than one network.

internetwork dependency
A dependency between jobs or job streams in separate Tivoli Workload Scheduler networks. See also network agent.

Internetwork Packet Exchange (IPX)
A connectionless datagram protocol, used in a NetWare LAN environment, to transfer data to a remote node.

See Network Information Center.

internode routing
The capability of path control to route PIUs from half-sessions to data link control and from data link control to half-sessions for sessions between NAUs that reside in different nodes.

The ability of a computer or program to work with other computers or programs.

Pertaining to a computer or program that can work with other computers or programs.

Interoperable Naming Service (INS)
A program that supports the configuration of the Object Request Broker (ORB) administratively to return object references.

interoperable object reference (IOR)
An object reference with which an application can make a remote method call on a CORBA object. This reference contains all the information needed to route a message directly to the appropriate server.

interpartition parallelism
A single database operation (for example, index creation) that is run in parallel across the partitions of a partitioned database. See also intrapartition parallelism, intraquery parallelism, massively parallel processing.

Pertaining to a shipment that is transferred between two facilities that are owned by the shipper or a third party.

interpret as command (IAC)
A special character in the telnet protocol that indicates that the characters that follow represents a command.

interpreted status
In performance monitoring, the status (of an active policy) that indicates that a problem other than a specific threshold violation has occurred, such as a J2EE application exception or an ARM failure. See also violation status.


  1. A tool that allows a program to be run immediately, without recompiling or relinking.
  2. A program that translates and runs each instruction of a high-level programming language before it translates and runs the next instruction.

interpret table
In VTAM, an installation-defined correlation list that translates an argument into a string of eight characters. Interpret tables can be used to translate logon data into the name of an application program for which the logon is intended.

interprocedural analysis

  1. The process of inspecting referenced procedures for information on relationships between arguments, returned values, and global data.
  2. A process for performing optimizations across compilation units.

interprocess communication (IPC)

  1. The process by which programs send messages to each other. Sockets, semaphores, signals, and internal message queues are common methods of interprocess communication.
  2. A mechanism of an operating system that allows processes to communicate with each other within the same computer or over a network.

interprocess communication facility (IPC facility)
A set of services that allows different processes to communicate. Some examples of interprocess communication facilities include message passing (using message queues), semaphore sets, and shared memory services.

interprocessor block level sharing
See level three data sharing.

interquery parallelism
The ability to process multiple queries simultaneously to avoid a performance delay when multiple independent queries access the same table. See also intraquery parallelism.

Pertaining to interfaces or links between racks of servers or switches.

interrecord-separator character (IRS)
In BSC, a transmission control character that is used to separate records within a block of data.

interregion communication (IRC)
The method by which CICS provides communication between a CICS region and another region in the same processor. Interregion communication is used for multiregion operation (MRO). See also intersystem communication.


  1. To stop a process in such a way that it can be resumed.
  2. A condition that applies to a simulation that causes the simulation execution to be halted if the condition is met.
  3. An identification that is used to send a signal to the processor indicating that the installed hardware requires attention.
  4. A signal sent by an I/O device to the processor when an error has occurred or when assistance is needed to complete I/O. An interrupt usually suspends the running of the program that is currently running.
  5. In data communications, to take an action at a receiving station that causes the sending station to end a transmission.
  6. Suspension of a process, such as execution of a computer program, caused by an external event and performed in such a way that the process can be resumed.

interruptible process
See long-running process.

interrupt key
A key used to cancel or abort a program or to leave a current menu and return to the menu one level above.

interrupt number
The identification that is used to send a signal from an installed hardware feature to the CPU requesting attention. Different hardware features use different interrupt numbers.

interrupt packet
In X.25 communications, an expedited packet that is allowed to overtake normal data packets (which are delivered in sequence).

interrupt request (IRQ)
An input found on a processor that causes it to suspend normal instruction execution temporarily and to start executing an interrupt handler routine.

interrupt service routine (ISR)
A software routine that receives and examines interrupts and determines how to handle them.

An SQL operation that involves the INTERSECT set operator, which combines two result tables. The result of an intersection operation consists of all of the rows that are in both result tables.

intersection data
Any user data in a logical child segment that does not include the logical parent's concatenated key.

interservice communication
In MERVA ESA, a facility that enables communication among services if MERVA ESA is running in a multisystem environment.

intersite transfer service
In the context of SAML, the point in a federation at which the single sign-on process is initiated.

intersubnetwork link (ISL)
A link that interconnects nodes in two topology subnetworks.

intersubnetwork TG (ISTG)
A transmission group that interconnects nodes in two topology subnetworks.

inter-switch link (ISL)
The physical connection that carries a protocol for interconnecting multiple routers and switches in a storage area network (SAN).

intersystem communication (ISC)

  1. A CICS facility that provides inbound and outbound support for communication from other computer systems. See also interregion communication.
  2. An extension of IMS Multiple Systems Coupling (MSC) that, when both subsystems use ISC, permits the connection of IMS to another IMS subsystem, to CICS Transaction Server for z/OS, or to a user-written subsystem.

intersystem communications function (ICF)
A function of the operating system that allows a program to communicate interactively with another program or system.

intertask communication
A facility that enables application programs to communicate with the MERVA nucleus and so request a central service.

inter-transaction affinity
A relationship between a set of transactions that share a common resource and coordinate their processing. Transaction affinity between two or more CICS transactions is caused by the transactions using techniques to pass information between one another, or to synchronize activity between one another, in a way that requires the transactions to execute in the same CICS region.

inter-user communication vehicle (IUCV)
A z/VM facility for passing data between virtual machines and z/VM components.


  1. The number of seconds that have elapsed between one sample and the next.
  2. The rate, or frequency, at which a maintenance event recurs. See also threshold.
  3. The defining range or ranges of an attributes value. Intervals are a one-to-many relationship to the attributes utilized in the scorecard.

interval control
In CICS, a facility that handles, synchronizes, and initiates the tasks requested by user application programs and CICS internal service routines.

interval control element (ICE)
An entry under CICS interval control that is waiting in an unexpired state. Its defined date and time (to become current) are in the future. When an ICE expires it becomes an automatic initiation descriptor (AID).

interval control program (ICP)
The CICS program that provides time-dependent facilities. Together with task control, interval control (sometimes called time management) provides various optional task functions (such as system stall detection, runaway task control, and task synchronization) based on specified intervals of time, or the time of day.

interval migration
A space management function that performs hourly space management on eligible SMS-managed and non-SMS-managed volumes that are at or have exceeded a threshold level (such as the midpoint between the high and low threshold or the high threshold). Data sets are migrated from the eligible volume until the low threshold is reached or there are no more eligible data sets. See also event-driven migration.

interval size
A measure of the total work capacity of an interval.

interval statistics
In CICS Transaction Server only, CICS statistics gathered at user-specified intervals and written to the SMF data set. See also end-of-day statistics, requested reset statistics, requested statistics, unsolicited statistics.

interval timing
In SQL replication, the process of controlling how frequently a replication subscription cycle runs.

interval variable
A decision variable that represents an period of time and is characterized by a start value, an end value, a size, and an intensity.

intervention-required check
In printers, an unexpected asynchronous condition that requires external intervention to clear it; for example, out-of-forms, out-of-toner.

intervention-required exception
An error that causes printing to stop until an operator performs a required action.


  1. A meeting at which information is obtained from the candidate.
  2. A process whereby a contract is created through a series of pre-defined questions, based on the user’s responses.

interview design
A series of step designs in a specific sequence. The sequence of these steps is determined in accordance with the user’s responses to previous steps.

interview filter
A filter that applies to all tables and select respondents based on the interview status. For example, an interview filter can be used to exclude test data and interviews that timed out.

interview script
A script that natively supports market research data types and expression evaluation.

interword blank
See word space.

interword space
See word space.

Pertaining to a problem that is very large in size or complex.

intraensemble data network (IEDN)
A 10 Gigabit Ethernet network for application data communications within an ensemble. Data communications for workloads can flow over the IEDN within and between nodes of an ensemble.

intraensemble data network TOR switch (IEDN TOR switch)
A top-of-rack switch that provides connectivity to the intraensemble data network (IEDN), supporting application data within an ensemble. See also top-of-rack switch.

intra frame
See information frame.

An organization's internal network that uses the IP protocol.

intranet manager (IM)
The IM is responsible for evaluating and approving all application requests and scheduling resources to provide guidance in website design and navigation, application development, and hosting.

intranode management network (INMN)
A private service network that the zManager uses to manage the resources within a single zEnterprise node. The INMN connects the Support Element (SE) to the zEnterprise CPC and to any attached zEnterprise BladeCenter Extension (zBX).

intranode routing
The capability of path control to route PIUs for sessions between NAUs that reside in the same node.

In CICS, pertaining to the same CICS address space.

intrapartition destination
In CICS, a type of transient data queue used subsequently as input data to another task within CICS.

intrapartition parallelism
The subdivision of a single database operation (for example, index creation) into multiple parts, which are then executed in parallel within a single database partition. See also interpartition parallelism.

intrapartition transient data (TD)
A CICS facility for temporarily saving data in the form of queues, called destinations. See also extrapartition transient data.

intraprocessor block level sharing
See level two data sharing.

intraquery parallelism
The ability to process parts of a single query at the same time using intrapartition parallelism, interpartition parallelism, or both. See also interpartition parallelism, interquery parallelism.

Pertaining to interfaces or links within a rack of servers or switches.

intrarecord data structure
In COBOL, the entire collection of groups and elementary data items from a logical record that is defined by an adjacent subset of the data description entries that describe that record. These data description entries include all entries whose level-number is greater than the level-number of the first data description entry describing the intrarecord data structure.

intrasystem communications
A function that allows two programs that are running in two different jobs on the same system to communicate with each other through an ICF file.

Belonging to the essential nature of a thing.

In GOCA, that part of the data stream passed from a controlling environment to a communication processor that indicates whether entities are to be processed in immediate mode or store mode.

In Java, a class (java.beans.Introspector) that provides a standard way for tools to learn about the properties, events, and methods supported by a target bean. Introspectors follow the JavaBeans specification.

intrusion detection scan
A system program that detects attempts to hack into, disrupt, or deny service to the system.

intrusion detection system (IDS)

  1. Software that detects attempts or successful attacks on monitored resources that are part of a network or host system.
  2. Software that notifies the user of attempts to hack into, disrupt, or deny service to the system.

intrusion prevention
A set of policies and rules for detecting suspicious behavior in network traffic and for alerting system or network administrators.

intrusion prevention system (IPS)
A system that attempts to deny potentially malicious activity. The denial mechanisms could involve filtering, tracking, or setting rate limits.


  1. In linking and traceability, pertaining to a manually set status when two artifacts do not satisfy the meaning of the link between them. The contents of at least one artifact must change to satisfy the link. See also suspect, valid, validity summary.
  2. Pertaining to an object that has a reference to another object that cannot be satisfied. A reference can be invalid because an object does not exist or because some attribute of an object does not match the requirements of the dependent (such as a data type mismatch), not because the dependent is disabled. All objects that depend on an invalid object are also invalid.

To remove a logical data unit from cache memory because it cannot support continued access to the logical data unit on the device. This removal might be the result of a failure within the storage server or a storage device that is associated with the device.

INVALID KEY condition
In COBOL, a run-time condition in which the value of a key for an indexed or direct file does not give a correct reference to the file.

invalid marketing program
A marketing program (cm_mmc= value) that is missing a parameter, contains a string that is not valid, or has a cm_mmc code on a page that lacks a page view tag.

invalid object
An object that was created but is not yet fully functional or is no longer fully functional. An object can become invalid if it depends on another object that was dropped or modified by a DDL statement or if it depends on a privilege that was revoked. See also object.

invalid package
In DB2 Version 9.1 for z/OS and earlier, a package that depends on an object (other than a user-defined function) that is dropped. Such a package is implicitly rebound on invocation. See also inoperative package.


  1. Pertaining to constraints on a set of data values that must always be satisfied. A single data value may be constrained (for example, x > 5) or the relationships between the data values may be constrained (for example, x > y).

invariant character set
A set of characters, such as the syntactic character set, having the same code point assignments in all coded character sets or code pages using a given encoding scheme. See also code page, coded character set, encoding scheme, syntactic character set.

invasive test
An optional test which, if run on the application, may cause a denial-of-service situation.

invention development team (IDT)
A team that evaluates disclosures by searching in prior arts, provides feedback/assistance to inventors and coordinates with the IP Law team for further processing of the disclosure, once the disclosure is ‘Search’ rated.

invention review board
See invention development team.


  1. Products stored and available for further action. May be reported as the quantity of a specific SKU in one location, the total quantity of a specific SKU in all locations containing that SKU, or a grand total of all material in storage (the latter generally reported as a dollar figure).
  2. Circuits and equipment procured from service providers, available for further action.

inventory allocation
The process of designating inventory for an order against inventory that actually exists in a fulfillment center. Allocation is not the same as inventory reservation, which is a more stringent policy, and does not typically apply to orders. See also inventory allocation against expected inventory, inventory reservation, inventory sharing arrangement.

inventory allocation against expected inventory
The process of designating inventory for an order against inventory that is expected to be received at a fulfillment center. This information is typically found in an expected inventory record. See also inventory allocation.

inventory availability safety factor
A quantity or percentage amount that is set to be excluded from inventory availability for various purposes. Can be defined at the item level or inventory type level, for onhand or future inventory availability.

inventory control block (ICB)
The first block in a RACF database. The ICB contains a general description of the database and, for the master primary data set, holds the RACF global options.

inventory item
A single article or unit of goods and materials on hand; stock. An inventory item can be comprised of several attributes such as Inventory Org, Item ID, and Product Class.

inventory management
In DFSMSrmm, the regular tasks that need to be performed to maintain the control data set (CDS). See also expiration processing, storage location, storage-location management processing, vital record processing.

inventory monitor
The process that monitors inventory levels.

inventory on hand
Inventory that is physically available to fulfill orders.

inventory organization
An organization definition for which all inventory information is consolidated.

inventory receipt
The receipt of products at a fulfillment center. Products are either expected and recorded in expected inventory records, or received ad hoc. Ad hoc inventory receipts are not recorded in expected inventory records. See also ad hoc inventory receipt, expected inventory record.

inventory-related rule
Business rules and common codes associated with inventory handling in the Sterling Selling and Fulfillment Suite.

inventory report
A report that provides inventories of software products, patches, and images that are available to be installed or are already installed on various data center systems. Inventories can be made at data center object, system, tier, and application levels.

inventory reservation

  1. See reservation.
  2. The process of designating inventory for a particular purpose and that is not available to allocate to orders. See also inventory allocation.

inventory scan
The process of gathering hardware and software information for a network computing environment. A scan occurs over managed resources and stores inventory information in the data model.

inventory segment
A certain amount of inventory set aside to meet the demand from a group of privileged customers. These segments are classified by types.

inventory segmentation
The process of setting aside a specific quantity of an inventory item for a specific type or group of customers.

inventory sharing arrangement
An arrangement whereby a store makes its inventory receipts available to another store for inventory allocation. See also inventory allocation.

inventory-software dictionary
A file that tracks the software installed on managed systems in a network.

inventory tag key
See inventory tag number.

inventory tag number
A unique item identifier that represents one of the real life manufacturing or customization numbers such as lot number, batch number, or revision number based on the product.

inventory unit of measure
The way inventory products are measured for stocking purposes.

inventory usage record
A record that contains information about the usage of inventory items, such as by issuing, transferring, or returning items to storeroom locations. An inventory usage record contains details such as quantity, storeroom location, and information about related records, such as assets and work orders.

Inverse Address Resolution Protocol (InARP)
An Internet protocol used for locating a protocol address through the known hardware address. In a frame-relay context, the data link connection identifier (DLCI) is synonymous with the known hardware address.

inverse matrix
A matrix that results from a mathematical operation on a matrix such that the two matrices can be multiplied together to obtain the unit matrix.

inverted HDLC
The conversion of 0-bits to 1-bits, and vice versa, to guarantee the transmission of data at the data link layer. The data link control protocol must be an HDLC-based protocol.

inverted index
An index into a bibliography database that allows for direct access. This can be compared to the thumb cuts of a dictionary, which allow a user to move to the exact location of the word being searched.

A process of profiling the data source to understand the source data in order to identify relevant values, structures, and patterns.

investment adjustment
One of the three consolidation models in Controller (used, for example, in the Netherlands and Denmark).

investment elimination template
A template used to reconcile eliminations of investments, such as subsidiaries and associated companies.

Investment Review Board (IRB)
Executive stakeholders responsible for setting the business transformation strategic direction and vision for the organization or business unit.

invitation notification
A notification of an invitation to join a community with all the rights and privileges of a member.

invited registration
A registration process in which suppliers are invited to provide details about their company and business.

invite-program-device operation
An input/output operation that invites an acquired program device to send input to a program and returns control to the program without waiting for the input to arrive.

The activation of a program or procedure.

invocation channel
A method for defining the processing logic and mapping of inbound and outbound data, which enables the integration framework to call external applications and process responses.

invocation credential
An identity with which to invoke a downstream method. The receiving server requires this identity with the sending server identity to accept the asserted identity.

The bill for services or products provided to a customer. The invoice includes all agreed to charges that are associated with the services or products provided.

invoice cycle time
The period of time between order creation and the time at which the order is invoiced.

invoice format
A template that is used to electronically upload the invoices that are received from the service provider.

invoice load
A mechanism to define the process of uploading invoices electronically to the database for further processing.

Invoice Online
A service that offers the possibility to view, inquiry, download and print copies of invoices and credit notes online. See also Customer Support Online, Order Status Online, Statement Online.

invoice reader
A reader used to automate the electronic invoice processing mechanism and to upload the invoice records in the database.

invoice-size paper
Paper that is 140 mm by 216 mm (5.5 in. by 8.5 in.).

invoice-to code
An accounting code assigned to the requester’s organization.

To activate an action. See also action.

invoke ID
In the DCE X/Open Directory Service, an integer used to distinguished an asynchronous directory operation from all other outstanding ones.

invoke medium map (IMM)
In printing, a structured field that is used to switch copy groups within a form definition.

invoker attribute
An assembly property for a web module that is used by the servlet that implements the invocation behavior.

See input/output.

A data tower of an Intelligent Printer Data Stream (IPDS) construct that represents image data. Both IM1 and IO1 represent a raster pattern, but IO1 commands provide additional functions.

See input/output adapter.

I/O adapter
See input/output adapter.

See input output area input.

See input/output controller.

See Image Object Content Architecture.

I/O cage
A physical area of the processor frame where connections to the central processor complex are made.

I/O card Licensed Internal Code
The Licensed Internal Code in a controller or adapter card.

See input/output configuration data set.

I/O channel
See input/output channel.

I/O completion port (IOCP)
A Windows NT scheduling construct that is tied directly to a device handle and any I/O requests made to it. Using I/O completion ports enables matching of notifications to I/O completions and minimizes context switches among worker threads. They provide a more efficient method for multithreaded server applications to process data.

I/O configuration
The collection of channel paths, control units, and I/O devices that attaches to the processor unit.

I/O configuration program
See input/output configuration program.

I/O control
In COBOL, the name of the header for an Environment Division paragraph in which program requirements for specific input/output techniques are specified. These techniques include checkpoints, the sharing of the same areas by several data files, and multiple file storage on a single input/output device.

I/O controller
See input/output controller.


  1. See I/O completion port.
  2. See input/output configuration program.

ioctl system call
Performs low-level input- and output-control operations and retrieves device status information. Typical operations include buffer manipulation and query of device mode or status.

See in-order delivery.

I/O device
An addressable I/O unit, such as a direct access storage device (DASD), magnetic tape device, or printer.

See input/output definition file.

I/O enclosure
A hardware unit in a storage system where data is transferred into and out of the system.

I/O error
An error in the processing of input or output device data.

I/O error manager
The PSF subcomponent that analyzes I/O errors, determines the recovery action, and directs I/O error recovery and cleanup.

I/O feedback area
In the C language, an area made up of two sections: the common area and the file-dependent area. The common area contains information about I/O operations performed on the file, such as the number of operations performed and which operation was performed last. The file-dependent area contains file-specific information for display, database, printer, and ICF files.

I/O group
A collection of volumes and node relationships that present a common interface to host systems. Each pair of nodes is known as an input/output (I/O) group

I/O hub
A device that provides the interface between the processors and memory in the central electronics complex and the I/O drawers that are connected to it.

IO image
In architecture, an image object containing IOCA constructs. See also IM image.

IO-image command set
In IPDS architecture, a collection of commands used to present IOCA data in a page, page segment, or overlay.

I/O interface
An interface that enables a host to perform read and write operations with its associated peripheral devices.

I/O mode
In COBOL, an open mode where records can be read from, written to, or removed from the file.

I/O node
A Blue Gene core node that is responsible, in part, for providing I/O services to compute nodes.

See input/output processor.


  1. See input/output program communication block.
  2. See input/output PCB.

See input/output problem determination.

See input/output privilege level.

IOP-level partitioning
A dedicated allocation of the input/output processor (IOP) and all accompanying resources (input/output devices) to a particular logical partition. IOPs on a single bus may be dedicated to different logical partitions. The bus resources that contain these IOPs must be shared. See also bus-level partitioning.

I/O prevention
The z/OS process that, during an XRF takeover, ensures that the failing active IMS cannot change the databases during the takeover.

I/O Priority Queuing
A facility that enables the system administrator to set priorities for queueing I/O signals from different system images. See also multiple allegiance, parallel access volume.

I/O processor
See input/output processor.

See input/output operations per second.

See interoperable object reference.

A closed source, proprietary mobile operating system for Apple devices. See also mobile device, mobile operating system.

I/O sequential response time
The time that an I/O request is queued in processor memory waiting for previous I/O operations to the same volume to finish.

I/O server
Software that provides I/O service to other logical partitions on the same system.

I/O status
In COBOL, a conceptual entity that contains the two-character value indicating the resulting status of an input-output operation. This value is made available to the program through the use of the FILE STATUS clause in the file control entry for the file.

I/O Stream Library
A class library that provides the facilities to deal with many varieties of input and output.

See Internet of Things.

I/O throttling rate
The maximum rate at which an I/O transaction is accepted for a volume.

I/O toleration
The IMS process that, during a takeover, allows transaction processing after a takeover before I/O prevention has completed.

IoT platform
A software component that enables interaction with resources through a well-defined interface. This can be orchestrated together with non-IoT services, such as enterprise services. Interaction with the service is done through the network.


  1. See intelligent peripheral.
  2. See integer programming.
  3. See Internet Protocol.

See interprocedural analysis.

IP address
A unique address for a device or logical unit on a network that uses the Internet Protocol standard. See also dynamic IP address, host name, network address, static IP address.

IP address range

  1. A range of IP addresses used by nodes after provisioning.
  2. A range of IP addresses from which users are allowed to log on to the cloud service.  Usually the range is resticted to IP addresses within a corporate network to provide a level of protection against user credentials being stolen or phished.

IP address takeover (IPAT)
The process of a node assuming control of a service IP label that belongs to a cluster node. IP address takeover assures that the cluster continues providing network service to clients. See also Address Resolution Protocol, aliasing, network mask.

IP address takeover via IP aliases
The process of placing an IP service label from a failed node onto a network interface of another node as an IP alias, while keeping the interface's original IP label. See also Address Resolution Protocol, aliasing, gratuitous ARP.

IP aliasing
The method by which one or more IP addresses can be configured to concurrently reside on a single network interface.

See IP address takeover.

See interprocess communication.

IPC facility
See interprocess communication facility.

See Interactive Problem Control System.

See Integrated Product Development.

IP datagram
A unit of information that is sent across a TCP/IP network. An IP datagram contains both data and header information, such as the IP addresses of the origin and of the destination.

See Intelligent Printer Data Stream.

IPDS printer
A printer that uses the Intelligent Printer Data Stream, such as the IBM 3900 Advanced Function Printer.

See intelligent power distribution unit.

See Information Presentation Facility.

IPF file
See Information Presentation Facility file.

IP filter

  1. A filter that provides the basic protection mechanism for a firewall by determining what traffic passes through the firewall based on IP session details. This protects the secure network from outsiders who use unsophisticated techniques (such as scanning for secure servers) or even the most sophisticated techniques (such as IP address spoofing). IP filters are the base on which the other tools are constructed, providing the infrastructure in which they operate and denying access to all but the most determined cracker.
  2. In the Internet suite of protocols, a set of rules that is based on IP addressing that controls whether one host can access another host through a firewall. See also filter.

IP group
A range of IP addresses that can be selected for use with specific hypervisors.

See intelligent peripheral interface.

The IBM implementation of the proposed ANSI/X3T9.3 standard defining the electrical, data link protocol, and functional interfaces.

See Internet Protocol interconnectivity.

IP interconnectivity
See Internet Protocol interconnectivity.


  1. See initial program load.
  2. See Netcool/Impact policy language.

See International Program License Agreement.

IP label
For TCP/IP networks, the name specified in the /etc/hosts file or by the Domain Name System for a specific IP address.

IP layer
See network layer.

See isolated pacing message.

IP message
In-process message. A message that is in the process of being transferred to another application.

See Intelligent Platform Management Interface.

See Integrated Portfolio Management Team.

IP multicast
Transmission of an Internet Protocol (IP) datagram to a set of systems that form a single multicast group.

IP over IPX
A function of the operating system that allows an application using the sockets' communications application programming interface (API), with address family AF_INET, to communicate interactively with another program or system over an Internetwork Package Exchange (IPX) network.

IP over SNA
A function of the operating system that allows an application using the sockets communications API, with address family AF_INET, to communicate interactively with another program or system over an SNA network.

See initial project proposal.

IP packet security
See packet rule.

See isolated pacing response.

i Project
A local container for local source files that allows offline IBM i development on Windows platforms.

IP route
A network path between any two IP addressable points in a network.

IP router
A device in an IP internet that is responsible for making decisions about the paths over which network traffic will flow. Routing protocols are used to gain information about the network and to determine the best route over which the datagram should be forwarded toward the final destination. The datagrams are routed based on IP destination addresses.


  1. See intrusion prevention system.
  2. See image presentation space.

See inches per second.

See Internet Protocol Security.

IP Security Architecture
A collection of Internet Engineering Task Force (IETF) standards that define an architecture at the Internet Protocol (IP) layer to protect IP traffic by using various security services.

IP Security Protocol
See Internet Protocol Security.

IP socket
The port that is concatenated with the Internet Protocol (IP) address.

IP sprayer
A device that is located between inbound requests from the users and the application server nodes that reroutes requests across nodes.

IP tunnel
A path for data flow between two Internet Connection Secured Network Gateways. Packets flowing through an IP tunnel are encrypted and encapsulated to ensure the security of the data.

See Internet Protocol version 4.

See Internet Protocol version 6.

See Internetwork Packet Exchange.

IPX address
The 10-byte address, consisting of a 4-byte network number and a 6-byte node address, that is used to identify nodes in the IPX network. The node address is usually identical to the medium access control (MAC) address of the associated LAN adapter.

IPX network number
An 8-digit hexadecimal number that identifies the IPX network.

IPX router
A device in an IPX network that is responsible for making decisions about the paths over which network traffic will flow. Routing protocols, such as the Routing Information Protocol (RIP), are used to gain information about the network and to determine the best route over which the datagram should be forwarded toward the final destination. The datagrams are routed based on the IPX network numbers of their destination addresses.

See iSCSI qualified name.


  1. See infrared technology.
  2. See Interface Repository.

See Investment Review Board.

See interregion communication.

See Import Requirements Executive.

See intermediate routing function.

See Identity and Risk Investigation System.

See ILOG Rule Language.


  1. See IMS Resource Lock Manager.
  2. See internal resource lock manager.

IRLM session
A VTAM session between two internal resource lock managers (IRLMs).

See IMS request message.

See intermediate routing node.

See incident response platform.

See interrupt request.

See internal rate of return.

irregular time series
A set of time-stamped data where the measurements occur at arbitrary times. The time interval between measurements is not predictable. Measures of stock trading activity throughout the day are an example of irregular time series data. See also regular time series, time series.

See interrecord-separator character.

Spread spectrum air interface technology used in some digital cellular and personal communications services, and other wireless networks. IS-95 is based on a CDMA system and competes with GSM networks within the second generation of cellular networking. See also 2G, code division multiple access.


  1. See Instruction Set Architecture.
  2. See IBM Support Assistant.

See Internet Security Association and Key Management Protocol.

See indexed sequential access method.

ISAM interface
A set of routines that allow a processing program that is coded to use the indexed sequential access method (ISAM) to gain access to a Virtual Storage Access Method (VSAM) key-sequenced data set (KSDS).

See Internet server application programming interface.

See interim satisfaction.

See intermediate switch board.


  1. See intersystem communication.
  2. See Integrated Solutions Console.
  3. See integrated supply chain.

See Internet Small Computer System Interface.

iSCSI alias
An alternative name for the iSCSI-attached host.

iSCSI client logical-unit number (iLUN)
A unique number that is assigned to each virtual logical unit number (VLUN). The iLUN for a single client starts at zero and increments sequentially.

iSCSI name
A name that identifies an iSCSI target adapter or an iSCSI initiator adapter. An iSCSI name can be an iSCSI qualified name (IQN) or an extended-unique identifier (EUI). Typically, this identifier has the following format: iqn.datecode.reverse domain.

iSCSI qualified name (IQN)
A unique name that identifies an iSCSI target adapter or an iSCSI initiator adapter as defined by the iSCSI standard (RFC 3722).

ISC static user
An Intersystem Communication user defined using the SUBPOOL macro in an IMS system definition.

See interactive source debugger.

See Integrated Services Digital Network.

ISDN data link control (IDLC)
An asynchronous, balanced data link protocol used between two systems to exchange information over an ISDN B-channel.

ISDN two B-channel transfer
See Integrated Services Digital Network two B-channel transfer.

See Integrated Services Digital Network user part.

See input service driver.

iSeries project
See i Project.

See instance-specific information.


  1. See inter-switch link.
  2. See intersubnetwork link.

ISL hop
Considering all pairs of node ports (N_ports) in a fabric and measuring distance only in terms of inter-switch links (ISLs) in the fabric, the number of ISLs traversed on the shortest route between the pair of nodes that are farthest apart in the fabric.

ISL Trunking
A feature that distributes traffic over the combined bandwidth of up to four inter-switch links (ISLs) between adjacent switches, while preserving in-order delivery. See also master port, trunking group, trunking port.

ISM device
The System z firmware that facilitates the use of internal shared memory for SMC-D processing. An ISM device is identified by a unique PCIe function ID (PFID) and a virtual channel ID (VCHID). An ISM device is configured in the hardware configuration definition (HCD) and is associated with a single physical network ID.

See Interactive Storage Management Facility.

ISM interface
An interface that is dynamically created by TCP/IP to represent an ISM device for SMC-D capable interfaces with the same physical network ID.

See integrated system management processor.

See input sequence number.

ISN acknowledgment
A collective term for the various kinds of acknowledgments sent by the SWIFT network.

iSNS Protocol
See Internet Storage Name Service Protocol.

See International Organization for Standardization.

ISO 8208
See X.25.

Property of a communications signal that is delivered at a specified, bounded rate, which is desirable for continuous data such as voice and full-motion video.

ISO environment
A coding structure defined in ISO 2022 that uses single (or multiple) septet(s) (7-bit) or octet(s) (8-bit) per code point, with or without code extension controls.

ISO forms
Pertaining to a set of paper sizes selected from those standardized by the International Organization for Standardization (ISO) for use in data processing.

ISO/IEC 10646
See International Organization for Standardization/International Electrotechnical Commission 10646 UCS-2 level 1.

Pertaining to a transaction in which only the application changing the data knows about the individual update requests until the transaction is complete.

isolated E_port
An expansion port (E_port) that is online but not operational between switches due to an overlapping domain ID or nonidentical parameters such as error detect timeout values (E_D_TOVs). See also expansion port.

isolated log sender (ILS)
In an RSR environment, a component of the Transport Manager Subsystem that sends gap data to the tracking subsystem.

isolated pacing message (IPM)
An SNA message that indicates whether the pacing window should be changed.

isolated pacing response (IPR)
An SNA message that indicates that data has been received and that the next window of data may be sent.

isolated region
A logical subdivision of the workflow database that contains both transferred workflows and the data for all active workflows. Work cannot be shared across or moved between isolated regions. Isolated regions can be used to separate groups of users as appropriate for the organization.


  1. The process of containing an asset or location to prevent accidents in the workplace. Procedures are followed to contain the asset or the location before an authorized person can work on it. For example, a user can specify that an asset is isolated from a potentially dangerous source of energy. When the work is complete, the steps that were taken to isolate that asset are removed so that the asset can be returned to production.
  2. Even though transactions execute concurrently, they appear to be serialized. In other words, it appears to each transaction that any other transaction executed either before it, or after it. See also ACID property, ACID transaction.

isolation level
An attribute that defines the degree to which an application process is isolated from other concurrently executing application processes. Isolation levels generally relate to the behavior of an application with respect to locks. See also cursor stability, read stability, repeatable read, uncommitted read.

isolation procedure
Written information used by service representatives to repair IBM equipment. An isolation procedure contains yes/no questions and procedures that direct the user to the failing part of the equipment.

ISO model
A set of rules for data communication, sanctioned by the International Organization for Standardization (ISO). The ISO protocols enable systems supplied by different vendors to connect and communicate. They are the basis of the open systems interconnection (OSI) standards.

Pertaining to a simple mapping of COBOL items and XML elements belonging to XML documents and COBOL groups that are identical in shape.

ISO sizes
See ISO forms.

See Internet service provider.

See Interactive System Productivity Facility.

ISPF client
An SCM client used for working with source code from the ISPF interface. The ISPF client can be used to load, edit, check in, and deliver source. It can also be used to access build functions and associate work items with changes.

See Interactive System Productivity Facility/Program Development Facility.

See interactive SQL.


  1. See interrupt service routine.
  2. See intermediate session routing.

See image symbol set.


  1. To release an item from a storeroom location and charge the cost to an asset, GL account, location, work order, location, or GL account.
  2. A debt security or equity that is issued for trading purposes in the capital markets and that is used as financial collateral.
  3. A security risk to which a web application is vulnerable, or possibly sensitive information that is visible to unauthorized users.
  4. An element that is created during the execution phase of a project to communicate the nature of impending or actual problems for which no concrete solution has been proposed.

issued certificate list (ICL)
A public key infrastructure (PKI) services database containing the history of issued certificates.

issue ID
See issue identifier.

issue identifier (issue ID)
The number assigned to every instance of an issue found during a content scan.

In e-commerce, a financial institution that issues payment cards to individuals. An issuer can act as its own certificate authority (CA) or can contract with a third party for the service.

issuer's distinguished name (IDN)
The X.509 name that is associated with a certificate authority.

issue unit
The quantity of an item that is considered a single item; for example, gloves are issued in pairs. The issue unit might be different from the order unit. See also order unit.

In VTAM and NCP, a definition specification method for indicating the initial status of resources.

See intersubnetwork TG.

See Integrated Services Digital Network user part.

See International Telegraphic Alphabet Number 2.

When referring to letters, slanted to the right. Italic letters are used for quotes, special phrases, and foreign words. The first italic type was designed by Aldus Manutius in AD 1501 and was based on the handwriting style of that time. See also roman.

A typeface with characters that slant upward to the right.

IT asset management
The process whereby an organization collects, tracks, and reports information about the value, ownership, and location of the IT assets that it owns.

ITB character
See intermediate-text-block character.

ITC table
See insert time clustering table.


  1. See institute of transportation engineers.
  2. See Internal Terminal Emulator.
  3. See integration test enablement.
  4. See integrated technology element.


  1. The smallest unit of information that Information Integrator for Content administers. Each item has an identifier. For example, an item might be a folder or a document.
  2. A simple data object that does not consist of other objects. An item type is represented by a blue dot next to the type name in the type tree.
  3. An entity that has a part number or SKU. See also defining attribute.
  4. A good or service. An item may refer to an entry in a list or one object in a collection of objects.
  5. An entity or a link. Items are characterized by the values of their properties. See also cloaked item, merged item, ordered item.
  6. A component or part of an asset.
  7. A product that has at least one characteristic that is different from all other products and which requires a unique identifier such as a stock keeping unit (SKU) or part number. The basic product of the catalog that can be used in categorization and product associations. An item is the most basic part of the catalog hierarchy.
  8. In dynamic data exchange, the identifier for a source of data. For example, the top, left cell position in a spreadsheet is row 1, column 1. This cell's item is R1C1.
  9. See member.
  10. The data in one line of an indexed field.
  11. In Content Manager, an instance of an item type. For example, an item might be a folder, document, video, or image. See also semantic type.
  12. An entity within a location that can be equipped with tags and whose positions can therefore be tracked, such as an asset or person.
  13. A representation of a product or other real-world object. Every item exists in a catalog and can belong to any number of categories within that catalog. See also catalog, container.
  14. Inventory that might be part of an asset, but which is not strictly monitored, and whose cost is less than an asset.
  15. An element in the substitution group for the XBRL item element. The item contains the value of the simple fact and a reference to the context that is required to interpret that fact.
  16. In XQuery, a part of a sequence that is either an atomic value or a node. See also atomic value, node.
  17. In EGL, a named area of memory that contains a single value.

item assembly structure (IAS)
A list of individual items and subassemblies that are required to build a piece of equipment or define the requirements of an operating location.

item association
An association between items for various purposes, such as cross-sell, up-sell, or for product substitution.

item attribute
An attribute instance of an item. The attribute is defined by the specification of the owning catalog of the item. See also attribute instance.

item-based allocation
A process that relocates both uncommitted and committed demands for items of existing orders to more suitable suppliers, based on user configuration as well as supply and demand changes in the system.

item classification
The quality category in which an item is placed. For example, first quality, second quality, or finished good.

item cross referencing
The process of defining items in multiple catalogs that are supported (referenced) through a single mechanism, such as a Global Trade Item Number (GTIN).

item descriptor
A description of a single note item. An item descriptor is stored in an array of fixed-size structures in a note header. Each structure has information describing the item name, type, value, size, and so on.

item entitlement
A validation that is performed to verify if the items that have been ordered are applicable to the customer.

item instructions
A special notation associated with an item. For example, a "handle with care" item instruction may be associated with fragile items.

item kit
A group of items that are issued as one single unit.

item master
See master catalog.

item quantity coupon
A coupon that changes the unit price of an item based on the quantity of items being ordered.

item quantity pricing rule
A pricing rule that changes the unit price of an item based on the quantity of items being ordered.

item record
A document that defines an item or material that is stocked in a storeroom. Item records are also used for purchasing.

item type
A template for defining and later locating like items, consisting of a root component, zero or more child components, and a classification. See also item type classification.

item type classification
A categorization within an item type that further identifies the items of that item type. All items of the same item type have the same item type classification. See also item type.

item with variations
A grouping of items that have similar characteristics and are displayed as a single item in product search results.


  1. The repetition of a set of computer instructions until a condition is satisfied.
  2. See sprint.
  3. In agile development, a set period of time in which work is completed. Sprints can vary in length, for example, from 1 to 4 weeks, but typically have a fixed duration within a project.
  4. See loop.

iteration plan
An artifact that shows the work items and additional unstructured information for a team or project area within a development phase.

iteration velocity
A report that shows the number of tasks completed in each iteration.

iterative consumer reporting job step
A job step that is passed a set of input values generated by a preceding iterative producer reporting job step. The report in iterative consumer job step is executed for each tuple in the received data set.

iterative development
An incremental agile software development strategy for designing software by dividing larger projects into several smaller projects, then approaching the smaller projects in four phases: requirements analysis, design, implementation and testing. See also evolutionary development, extreme programming, incremental development.

iterative producer reporting job step
A job step that generates a set of values passed as input parameters to a following iterative consumer job step.

iterative server
A server that can handle only one connection at a time. It can accept a new connection request only when it has completed processing the transaction started by a previous request. See also concurrent server.


  1. A class or construct that is used to step through a collection of objects one at a time.
  2. In SQLJ, an object that contains the result set of a query. An iterator is equivalent to a cursor in other host languages.

iterator declaration clause
In SQLJ, a statement that generates an iterator declaration class. An iterator is an object of an iterator declaration class.

iterator function
A cursor function that returns a data set by successive calls. It can be written in C or Java or can be an SPL routine that includes RETURN WITH RESUME.

See interactive terminal facility.

IT governance
See governance process.

See Information Technology Infrastructure Library.

The planned route that a shipment takes from its origin to its final destination.

IT infrastructure
All of the hardware, software, networks, and other facilities (but not people or processes) required to develop, test, deliver, monitor, control, or support IT services.

IT initiative
A set of IT programs or projects to achieve and IT transformation/change in support of a business/transformation initiative or technology objective.

See internal throughput rate.

IT role
A collection of permissions that are defined within the context of a single system or application. It can contain other IT roles of the same application. See also application role.

IT service
A service that is a combination of information technology, people, and processes, provided by an IT service provider.

IT services management workflow
See workflow.

See International Technical Support Organization.

See International Telecommunication Union.

See International Telecommunication Union Telecommunication Standardization Sector.

See information unit.

See inter-user communication vehicle.

See IBM Unlimited License Agreement.

IVE adapter
See Integrated Virtual Ethernet adapter.

See Integrated Virtualization Manager.

See installation verification procedure.

See interactive voice response.

See indifferent weight.

A browser-oriented component, potentially extending a server-side component, that provides either a logical service to the page or a visualization for the user (typically related to a server-side component or a configured data source).

iWidget specification
An open-source specification upon which Business Space widgets are based.

IW mode
The mode used for the RMC independent workstation (stand-alone) mode.

See interactive experience and mobility.

See Interactive Experience and Mobile.

See Integrated xSeries Adapter.

See Integration Exchange Format.

See Integrated xSeries Server.