IBM Terminology

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

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 Q.921

The ITU-T (formerly CCITT) recommendation that defines the link layer of the DSS1 protocol. Q.921 defines an HDLC protocol that ensures a reliable connection between the network and the user. Often used synonymously with LAPD.

 Q.931

An ITU recommendation that defines the network layer protocol for integrated services digital network (ISDN). This layer carries the ISDN messages that control the establishment and clearing of calls.

 Q.932

The CCITT Recommendation that defines the generic procedures applicable for the control of supplementary services at the user-network interface. These procedures expand on the basic call-control functions defined in Q.931. See also supplementary service.

 QA

See quality assurance.

 Q Apply latency

In Q replication, an approximate measurement of the difference between the time that the Q Apply program gets changed data from the receive queue and the time that the data is applied to a target table. This is a subset of the end-to-end latency in a replication scenario. See also latency, Apply latency, Capture latency, Q Capture latency, queue latency, end-to-end latency.

 Q Apply program

In Q replication, a program that reads transactions from a receive queue and applies those changes to one or more target tables or passes the changes to a procedure.

 Q Apply schema

In Q replication, the identifier for a Q Apply program and its control tables.

 Q Apply server

In Q replication, a database or subsystem on which the control tables for the Q Apply program are located and where the Q Apply program runs. It contains one or more sets of the control tables that store information about target tables and other replication definitions.

 QBE

See Query by Example.

 QBIC

See Query by Image Content.

 Qbuffer

See queue buffer.

 Q Capture latency

In Q replication, an approximate measure of how current a Q Capture program is in reading the DB2 database recovery log. It is the approximate difference between the time that source data was changed and the time that the Capture program made the data available by committing it to WebSphere MQSeries. This is a subset of the end-to-end latency in a replication scenario. See also latency, Apply latency, Capture latency, Q Apply latency, queue latency, end-to-end latency.

 Q Capture program

In Q replication and event publishing, a program that reads the DB2 database recovery log to capture changes made to DB2 database source tables and transmits the changes by using one or more WebSphere MQ queues. See also Capture program, Q replication, event publishing.

 Q Capture schema

In Q replication, the identifier for a Q Capture program and its control tables.

 Q Capture server

In Q replication and event publishing, a database or subsystem on which the control tables for the Q Capture program are located and where the Q Capture program runs. The Q Capture server contains one or more sets of the control tables that store information about Q subscriptions and XML publications and other replication or publishing definitions. See also control server.

 Q Capture transaction latency

In Q replication, the time between when a Q Capture program reads the commit statement for a transaction in the DB2 database recovery log and when the Q Capture program puts the message that contains the transaction on a send queue.

 QCMD

The IBM-supplied control language processor that interprets and processes CL commands for the system.

 q_data

See qualifying data.

 QGPL

See general purpose library.

 QHST

A message destination that is an alternative to the job log.

 QLLC

See Qualified Logical Link Control.

 QMF

See Query Management Facility.

 QMGR

See Queue Manager.

 QName

See qualified name.

 Qname

See queue name.

 QoS

See quality of service.

 QoS policy

A set of actions that a network takes to configure and signal for a particular quality of service (QoS) service to be provided to a particular traffic classification.

 Q replication

A replication solution that uses WebSphere MQ message queues for high-volume, low-latency replication. See also high availability disaster recovery, Q Capture program, SQL replication.

 QSAM

See queued sequential access method.

 Qshell Interpreter

A standard command interface that is used to run standard commands, such as UNIX-like commands and Java commands, and then view the output.

 QSN

See queue sequence number.

 QSRV

The IBM-supplied user profile for a service representative.

 Q subscription

In Q replication, an object that identifies a mapping between a source table and target table or procedure and specifies what changes are replicated. See also subscription, XML publication, replication source.

 Q subscription group

In Q replication, the Q subscriptions that are involved in replicating the same logical tables.

 QSYS

(1) The library shipped with the system that contains objects, such as authorization lists and device descriptions created by a user, and the system commands and other system objects required to run the system. The system identifier is QSYS.

(2) The IBM-supplied user profile that owns most IBM-supplied objects.

 qualified call

A DL/I call that contains at least one segment search argument.

 qualified class name

Any class name or class name qualified with one or more :: (scope) operators.

 qualified data-name

In COBOL, an identifier that is composed of a data-name followed by one or more sets of either of the connectives OF or IN followed by a data-name qualifier.

 qualified job name

A job name and its associated user name and a system-assigned job number. See also job name.

 Qualified Logical Link Control (QLLC)

An X.25 protocol that allows the transfer of data link control information between two adjoining SNA nodes that are connected through an X.25 packet-switching data network. The QLLC provides the qualifier Q bit in X.25 data packets to identify packets that carry logical link protocol information. See also enhanced logical link control, physical services header.

 qualified name (QName)

(1) The name of the library containing the object and the name of the object. See also object name.

(2) A data name explicitly accompanied by a specification of the class to which it belongs in a specified classification system.

(3) In C++, a name that is used to qualify a nonclass type name, such as a member, by its class name.

(4) A data set name consisting of a string of names separated by periods; for example, TREE.FRUIT.APPLE is a qualified name.

(5) A name that conforms to the Namespaces in XML specification. A QName consists of an optional prefix, or its associated URI, and a local name. See also expanded QName, in-scope namespace, lexical QName.

 qualified segment search argument

An segment search argument (SSA) that contains, in addition to the segment name, one or more qualification statements. A qualified SSA describes the segment type and occurrence that is to be accessed. See also segment search argument.

 qualified type name

A name used to reduce complex class name syntax by using typedefs to represent qualified class names.

 qualifier

(1) A modifier that makes a name unique.

(2) Each component name in a qualified name other than the right-most name. For example, TREE and FRUIT are qualifiers in TREE.FRUIT.APPLE.

(3) A value that provides additional information about a class, association, indication, method, method parameter, instance, property, or reference.

(4) A simple element that gives another generic compound or simple element a specific meaning. Qualifiers are used in mapping single or multiple occurrences. A qualifier can also be used to denote the namespace used to interpret the second part of the name, usually referred to as the ID.

(5) When referring to a QMF object, the part of the name that identifies the owner or the location of an object. When referring to a TSO data set, any part of the name that is separated from the rest of the name by periods. For example, 'TCK', 'XYZ', and 'QUERY' are all qualifiers in the data set name 'TCK.XYZ.QUERY'.

 qualifying data (q_data)

Unique information associated through a condition token with a given instance of a condition. A user-written condition handler uses q_data to identify and react to the condition.

 quality

The features and characteristics of a product or service that satisfy stated or implied user needs.

 quality assurance (QA)

The actions necessary to provide adequate confidence that a product or service satisfies defined requirements for quality.

 quality of protection

The level of data security, determined by a combination of authentication, integrity, and privacy conditions.

 quality of service (QoS)

(1) Any operation that allows traffic priorities to be designated. Through quality of service, different traffic throughout a network can be classified and administered.

(2) In OSI, a value that specifies certain performance characteristics of a service, session, or link. In OSI Communications Subsystem, quality of service is provided at the network layer.

(3) For an asynchronous transfer mode (ATM) virtual channel or a Networking BroadBand Services (NBBS) network connection, a set of communication characteristics such as end-to-end delay, jitter, and packet loss ratio.

(4) A set of communication characteristics required by an application. QoS defines a specific transmission priority, level of route reliability, and security level.

(5) A measure of system performance and system availability.

 Quality of Service policy

A policy that collects performance data for HTTP transactions for one or more Web servers, including the entire round-trip time of the transaction, the back-end service time, and the page display time.

 quality risk

A concern that can diminish the quality of a software product.

 quantified predicate

A predicate that compares a value with a set of values.

 quantile

A subgroup that is created when a group is divided into equal, ordered parts.

 quartile analysis

A type of analysis that displays the value of the business measures boundaries at the 25th, 50th, or 75th percentiles of a frequency distribution divided into four parts, each containing a quarter of the population.

 quasi-reentrant

Pertaining to CICS application programs that run under the CICS quasi-reentrant task control block (QR TCB). See also reenterable.

 query

(1) A request for information from a database based on specific conditions: for example, a request for a list of all customers in a customer table whose balances are greater than $1000.

(2) A component of certain SQL or XQuery statements that specifies a result set.

(3) In interactive systems, an operation at a workstation that elicits a response from the system.

(4) In a Tivoli environment, a combination of statements that are used to search the configuration repository for systems that meet certain criteria. The query object is created within a query library.

(5) A method for filtering and sorting requirements in views by limiting either the values of one or more attributes or traceability and specifying the order in which to display the filtered requirements. See also sorting.

(6) A reusable request for information about one or more model elements

 query block

The part of a query that is represented by one of the FROM clauses. Each FROM clause can have multiple query blocks, depending on how DB2 for z/OS processes the query.

 query body

The part of a query that contains the XQuery expression. See also query prolog.

 Query by Example (QBE)

A language used to write queries graphically.

 Query by Image Content (QBIC)

A query technology that enables searches based on visual content, called features, rather than plain text. Using QBIC, you can search for objects based on their visual characteristics, such as color and texture.

 query class

In Query Patroller, a mechanism that allows queries to be grouped and run according to their sizes. Query classes allow the flow of queries on a database to be controlled, ensuring that resources are shared among queries in the different size groupings (query classes).

 query command

The name of an action, and any associated parameters, that can be performed by DB2 for i5/OS query management. The query commands include ERASE, EXIT, EXPORT, GET, IMPORT, PRINT, RUN, SAVE, SET, and START.

 query command procedure

In DB2 for i5/OS query management, a type of query procedure that contains a subset of the query commands allowed in a query procedure. The query command procedure can be used for initializing global variables.

 query compatibility

See index matching.

 query controller

The server component of the Query Patroller system, which works with the DB2 database server to manage queries.

 query CP parallelism

Parallel execution of a single query, which is accomplished by using multiple tasks. See also sysplex query parallelism.

 query definition

In Query for i5/OS, information about a query that is stored in the system. The system-recognized identifier for the object type is *QRYDFN.

 query expansion

A supplement to the user's seach string to improve search retrieval results. A search string such as "phone" may be expanded to "phone, phones, telephone, telephones, mobile phone, cellular phone".

 Query for i5/OS

The IBM licensed program used to select, format, and analyze information from data files to produce reports and other files.

 query instance

In DB2 for i5/OS query management, a collection of system resources and a set of query commands within an application program.

 query I/O parallelism

Parallel access of data, which is accomplished by triggering multiple I/O requests within a single query.

 query management

A function of DB2 for i5/OS that provides query and report writing by using Structured Query Language (SQL).

 Query Management Facility (QMF)

An IBM query and report writing facility that supports a variety of tasks such as data entry, query building, administration, and report analysis.

 query management object

In DB2 for i5/OS query management, a collective term to describe any of the query management objects: query, form, or procedure.

 Query Manager

See DB2 Query Manager.

 query mode

In DB2 for i5/OS query management, the processing mode associated with a query instance.

 query optimization class

A set of query rewrite rules and optimization techniques for compiling queries.

 query optimizer

A component of the SQL and XQuery compiler that chooses an access plan for a data manipulation language statement by modeling the execution cost of many alternative access plans and choosing the one with the minimal estimated cost. See also compensation.

 Query Patroller Center

The graphical interface for administering Query Patroller. The Query Patroller Center can be used to monitor and control the flow of queries, manage users, and view query information.

 query prolog

In DB2 XQuery, a series of declarations that defines the processing environment for a query. See also query body.

 query statement

See query.

 query status

In Query Patroller, the processing state of a managed query: initial (intercepted), running, done, held, queued, canceled, aborted, rejected, or unknown. See also managed query.

 query string

(1) A character string that specifies the properties and property values for a query. You can create the query string in an application and pass it to the query.

(2) An input parameter that specifies the statistical data to be retrieved.

 query submission preferences

In Query Patroller, a set of characteristics for a submitter that the submitter can view and update. See also submitter.

 question pool

A set of questions that a Virtual Classroom instructor develops when creating a course that he or she plans to ask at some point during a session. For example, during a session an instructor might want to ask questions to get a sense of whether the students are understanding the course materials.

 queue

(1) A data structure for processing work in which the first element added to the queue is the first element processed. This order is referred to as first-in first-out (FIFO).

(2) A line or list of items waiting to be processed; for example, work to be performed or messages to be displayed or transmitted.

(3) A WebSphere MQ object to which message queuing applications can put messages, and from which they can get messages.

(4) A logical subdivision of the MERVA queue data set used to store the messages associated with a MERVA message-processing function. A queue has the same name as the message-processing function with which it is associated.

(5) A sequence with restricted access in which elements can only be added at the back end (or bottom) and removed from the front end (or top). A queue is characterized by first-in, first-out behavior and chronological order.

(6) A WebSphere MQ object that holds messages for message queueing applications. A queue is owned and maintained by a queue manager.

(7) A constructed and maintained list of items that are waiting to be processed. A collection of data objects with the same name in a Shared Queue.

 queue buffer (Qbuffer)

An IMS queue manager incore buffer that is used to keep the working copy of an IMS message segment.

 queued call

A telephone call that has been placed on hold and is waiting in the queue of telephone calls to be serviced by a system resource (such as an ACD group).

 queue depth

In SNADS, the number of distribution items on the distribution queue waiting to be sent.

 queue destination

A service integration bus destination that is used for point-to-point messaging.

 queued sequential access method (QSAM)

An access method for storing and retrieving logical records in a continuous sequence. Input data blocks awaiting processing or output data blocks awaiting transfer to auxiliary storage are queued on the system to minimize delays in I/O operations.

 queue element

A message and its related control information stored in a data record in the MERVA ESA Queue Data Set.

 queue latency

In Q replication and event publishing, an approximate measurement of the difference between the time that the Q Capture program commits data to WebSphere MQSeries and the time that WebSphere MQSeries makes the data available to the Q Apply program or a receiving application. This is a subset of the end-to-end latency in a replication scenario or an event publishing scenario. See also Q Apply latency, Q Capture latency, end-to-end latency.

 queue management

A MERVA service function that handles the storing of messages in, and the retrieval of messages from, the queues of message-processing functions.

 queue manager

(1) A system program that provides queuing services to applications. It provides an application programming interface so that programs can access messages on the queues that the queue manager owns.

(2) An object that defines the attributes of a particular queue manager.

 Queue Manager (QMGR)

(1) A component of CICSPlex SM that creates and manages queues of data in a cache that is shared by a CMAS and its local MASs.

(2) An IMS component that manages IMS messages and the space the messages occupy. The IMS Queue Manager is part of a DB/DC or DCCTL environment.

 queue manager event

An event that indicates one of the following: an error condition has occurred in relation to the resources used by a queue manager. For example, a queue is unavailable, or a significant change has occurred in the queue manager. For example, a queue manager has stopped or started.

 queue manager level security

In WebSphere MQ for z/OS, the authorization checks that are performed using RACF profiles specific to a queue manager.

 queue map

In Q replication and event publishing, an object that contains the settings for how Q replication programs process transactions and identifies the WebSphere MQSeries queues that are used in a replication or event publishing scenario. See also publishing queue map, replication queue map.

 queue name (Qname)

The name of a queue on Shared Queues upon which data objects reside. The queue name is 16 bytes long, left justified, padded with blanks. The first byte of the client queue name is the queue type. A client queue name of blanks or zeroes is supported.

 queue priority

In Query Patroller, a numerical value that represents the priority assigned to a query when a query is submitted.

 queue sequence number (QSN)

A sequence number that is assigned to the messages stored in a logical queue by MERVA ESA queue management in ascending order. The QSN is always unique in a queue. It is reset to zero when the queue data set is formatted, or when a queue management restart is carried out and the queue is empty.

 queue-sharing group

In WebSphere MQ for z/OS, a group of queue managers in the same sysplex that can access a single set of object definitions stored in the shared repository, and a single set of shared queues stored in the coupling facility. See also shared queue.

 queue-sharing group level security

In WebSphere MQ for z/OS, the authorization checks that are performed using RACF profiles that are shared by all queue managers in a queue-sharing group.

 queue structure

A structure managed by CQS that contains data in queues.

 queue type

A grouping of shared queues on the coupling facility list structure whose meaning is client defined or CQS defined.

 queuing network

A group of interconnected components.

 quick link

An association between a Uniform Resource Identifier (URI) and keywords or phrases.

 quick publish

To copy managed assets from a task group to the production server after the commit of the managed assets from the task group to the production-ready data on the authoring server is successful. See also production server, authoring server, workspace, managed asset, task group, commit, production-ready data.

 quick query

A query that is run using only a file name and possibly some record selection specifications; an undefined query.

 quick start

A type of warm start that can be performed in a multi-access spool (MAS) configuration.

 QuickStep pad

A window containing a variable number of buttons that can be clicked on with a mouse. Each button can be assigned a macroinstruction that issues a predefined sequence of keystrokes or commands.

 quiesce

To end a process or shut down a system after allowing normal completion of active operations.

 quiesced

Pertaining to the state of an instance or database when it has no active transactions, the buffer pools are flushed, no new transactions are allowed, and no new connections are allowed.

 quiesced shutdown

(1) In WebSphere MQ, a shutdown of a queue manager that allows all connected applications to disconnect. See also forced shutdown, immediate shutdown, preemptive shutdown.

(2) A type of shutdown of the CICS adapter where the adapter disconnects from WebSphere MQ, but only after all the currently active tasks have been completed. See also forced shutdown.

 quiesce point

A point at which data is consistent as a result of running the DB2 QUIESCE utility.

 quiesce time

A time of day after which an automatic function does not start processing any more volumes.

 quiescing

(1) In WebSphere MQ, the state of a queue manager before it stops. In this state, programs are allowed to finish processing, but no new programs are allowed to start.

(2) The process of bringing a device or a system to a halt by rejection of new requests for work.

 quorum disk

(1) The disk accessed exclusively by Microsoft Cluster Server to store the cluster recovery log, and to determine whether a server is up or down. Only one server can own the quorum disk at a time. Servers in the cluster can negotiate for the ownership.

(2) A managed disk (MDisk) that contains a reserved area used exclusively for cluster management. The quorum disk is accessed in the event that it is necessary to determine which half of the cluster will continue to read and write data.

 quorum index

The pointer that indicates the order used to resolve a tie. Nodes attempt to lock the first quorum disk (index 0), followed by the next disk (index 1), and finally the last disk (index 2). The tie is broken by the node that locks them first.

 quorum node

A node in the cluster that is counted to determine whether a quorum exists.

 quota

(1) A size limitation, such as the limit on the amount of disk space or size of a file set

(2) The amount of disk space and number of inodes assigned as upper limits for a specified user, group of users, or fileset.

 quota management

The allocation of disk blocks to the other nodes writing to the file system, and comparison of the allocated space to quota limits at regular intervals.

 quotation mark

The characters " and '.

 quote

To mask the special meaning of certain characters, causing the characters to be taken literally.

 quoted name

See delimited identifier.

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 RA

See repeat to address.

 RACE

See receive-any control element.

 race condition

A condition that occurs when two or more independent tasks simultaneously attempt to access and modify the same state information. This condition can lead to inconsistent behavior of the system and is a fundamental issue in concurrent system design.

 RACF

See Resource Access Control Facility.

 RACF always call

The policy by which DFSMSdfp checks all data sets automatically for discrete or generic Resource Access Control Facility (RACF) profiles to verify access authority.

 RACF authorization

The facility for checking a user's level of access to a resource against the user's desired access or the result of that check.

 RACF database

A collection of interrelated or independent data items stored together without redundancy, to serve the Resource Access Control Facility (RACF).

 RACF-indicated

Pertaining to a data set for which the RACF indicator is set on. If a data set is RACF-indicated, a user can access the data set only if a RACF profile or an entry in the global access checking table exists for that data set.

 RACF-protected

Pertaining to resources that are defined to RACF. A data set that is RACF-protected by a discrete profile must also be RACF-indicated.

 RACF remote sharing facility (RRSF)

A set of RACF functions that links together multiple RACF databases, allowing remote RACF administration and password synchronization.

 RACF report writer

A RACF function that produces reports on system use and resource use from information found in the RACF System Management Facility (SMF) records.

 RACF segment

The portion of a RACF profile that contains basic information needed to define a user, group, or resource to RACF.

 RACHECK request

In RACF, the issuing of the RACHECK macro or the RACROUTE macro with REQUEST=AUTH specified. The primary function of a RACHECK request is to check a user's authorization to a RACF-protected resource or function. See also authorization checking, FRACHECK request, RACROUTE.

 RACINIT request

In RACF, the issuing of the RACINIT macro or the RACROUTE macro with REQUEST=VERIFY or REQUEST=VERIFYX specified. A RACINIT request is used to verify the authority of a user to enter work into the system. See also RACROUTE.

 rack

(1) A free-standing structure or frame that can hold multiple servers and expansion units.

(2) See enclosure.

 rack configuration list

A list of all of the equipment within the rack and the logic cards within the card enclosure.

 rack number

In DFSMSrmm, a 6-character identifier that corresponds to a specific volume's shelf location in the installation's removable media library; the rack number is the identifier used on the external label of the volume to identify it. See also cell, shelf location.

 rack pool

In DFSMSrmm, a group of shelves that contains volumes that are generally read-only.

 rack stabilizer

A plate that holds the rack stable or steady when a device is pulled out for service.

 RACL

See Random Automated Cartridge Loader.

 RACROUTE

In RACF, a macro that provides a means of calling RACF to provide security functions. See also FRACHECK request, RACHECK request, RACINIT request.

 RAD

See rapid application development.

 RAD file

A file containing deployment objects such as task templates, system profiles and software packages used to archive data or to transfer data between two provisioning servers. A RAD file has a .rad extension.

 radio button

In graphical user interfaces, a control that comprises a circle with text beside it, representing one of set of mutually exclusive choices. The circle is partially filled when a choice is selected.

 radio frequency (RF)

An alternating current that generates an electromagnetic field when applied to an antenna. The generated electromagnetic field is suitable for wireless broadcasting and communications.

 radix character

The character that separates the integer part of a number from the fractional part. X/Open .

 radix-tree index

In DB2 for i5/OS, an object that provides random access to rows in a database table. See also encoded-vector index.

 RAI

See remote alarm indication.

 RAIA

See receive-any input area.

 RAID

See Redundant Array of Independent Disks.

 RAID 0

A data striping technique, which is commonly called RAID Level 0 or RAID 0 because of its similarity to common, RAID, data-mapping techniques. It includes no data protection, however, so, strictly speaking, the appellation RAID is a misnomer. RAID 0 is also known as data striping.

 RAID 1

A form of storage array in which two or more identical copies of data are maintained on separate media.

 RAID 10

A combination of RAID 0 and RAID 1 in which two identical copies of striped data exist, but there is no parity.

 RAID 3

A form of parity RAID in which all disks are assumed to be rotationally synchronized, and in which the data stripe size is no larger than the exported block size.

 RAID 5

A form of parity RAID in which the disks operate independently, the data stripe size is no smaller than the exported block size, and parity check data is distributed across the array's disks

 RAID 6

Any form of RAID that can continue to process read and write requests to all of an array's virtual disks in the presence of two concurrent disk failures.

 rail

Hardware attached inside a rack to hold devices that are designated as installable in a rack. See also slide.

 RAM

See random access memory.

 RAMP-C

See commercial processing workload.

 random access

(1) In COBOL, an access method in which the program-specified value of a key data item identifies the logical record that is obtained from, deleted from, or placed into a relative or indexed file.

(2) A process where individual records can be referred to in a nonsequential manner. See also access mode.

(3) Pertaining to a computer's process of reading data from and writing data to storage in a nonsequential manner.

 random access memory (RAM)

Computer memory in which any storage location can be accessed directly. See also disk unit.

 Random Automated Cartridge Loader (RACL)

A cartridge loader that includes individual drives that can have their own facility to use an automated tape library.

 random by key

A processing method for files in which the value in the key field identifies the records to be processed.

 random by relative record number

A processing method for files in which relative record numbers identify the records to be processed.

 randomization

The process of distributing schedule start times for different clients within a specified percentage of the schedule's startup window.

 random number

A number obtained by chance.

 random processing

A method of processing in which records can be read from, written to, or deleted from a file order requested by the program that is using them. See also consecutive processing, sequential processing.

 random read

The normal OSAM buffering method, which reads only one block with each I/O operation.

 range-clustered table (RCT)

A table whose data is tightly clustered across one or more columns. Each record in the table has a predetermined offset from the logical start of the table, which allows rapid access to the data.

 range-partitioned data space

A type of universal table space that is based on partitioning ranges and that contains a single table. See also partition-by growth table space, universal table space.

 rank

(1) An integer value that signifies the relevance of a given part to the results of a query. A higher rank signifies a closer match.

(2) An attribute of a use case, or scenario that describes its impact on the architecture, or its importance for a release.

(3) See array.

 ranking

The assignment of an interger value to each document in the search results from a query. The order of the documents in the search results is based on the relevance to the query. A higher rank signifies a closer match. See also dynamic ranking, static ranking.

 RAP

See root anchor point.

 rapid application development (RAD)

An environment supported by the workbench in which a server project can be configured to repeatedly deploy a server configuration (that contains message flows and message sets) to the broker with a single toolbar button click.

 rapid deployment tool

One of a set of tools to rapidly develop and deploy J2EE artifacts on the server and package the J2EE artifacts into the deployed EAR file.

 Rapid Network Reconnect (RNR)

A function of IMS that automatically reconnects IMS VTAM terminal sessions across outages (IMS, z/OS, or VTAM) and subsequent IMS restarts on the same or different z/OS systems within a sysplex.

 Rapid Transport Protocol (RTP)

A connection-oriented, full-duplex transport protocol for carrying session traffic over High-Performance Routing (HPR) routes.

 Rapid Transport Protocol connection (RTP connection)

A connection between two High-Performance Routing (HPR) nodes that may traverse one or more intermediate HPR nodes and links. The connection endpoints provide error recovery and adaptive rate-based flow control for the connection traffic, and nondisruptive switching of the underlying physical path in the case of route outage. The intermediate HPR nodes minimize their routing overhead using automatic network routing (ANR) protocols, which rely on header information to permit efficient source routing and prioritized transmission along the RTP connection.

 RAR

(1) See route addition resistance.

(2) See resource adapter archive.

 raster font

A font in which the characters are defined directly by the raster bit map. See also outline font.

 raster overlay

See raster pattern overlay.

 raster pattern

A series of picture elements (pels) arranged in scan lines to form an image.

 raster pattern overlay

An overlay loaded in a printer as a raster pattern, rather than as a sequence of commands. See also coded overlay.

 raster pattern storage (RPS)

An area of storage that holds raster patterns for fonts and images.

 rational number

A real number that is the quotient of an integer divided by an integer other than zero.

 Rational process workbench (RPW)

A process customization and publishing tool that enables process engineers to accelerate delivery of customized software development process, visually model process using Unified Modeling Language, and leverage the best practices captured in the RUP.

 Rational Unified Process (RUP)

A configurable software development process platform that is used to assign and manage tasks and responsibilities within a development organization.

 R_A_TOV

See resource allocation timeout value.

 raw time

The time taken by the application to run, including the overhead introduced by profiling the application.

 RBA

See relative byte address.

 RBBI

See rule-based break iterator.

 RBR

See rollback required.

 RBS

See robbed-bit signaling.

 RC

A REXX special variable set to the return code from any executed host command or subcommand. It is also set to the return code when the conditions ERROR, FAILURE, and SYNTAX are trapped.

 RC5

An encryption technology for use in wireless clients and servers.

 RCB

See record control byte.

 RCD

See read cache device.

 RC message

Recovered message; that is, an IP message that was copied from the control queue of an inoperable or closed ASP via the recover command.

 RCMS

See remote change management server.

 RCP

See rich client platform.

 RCT

(1) See resource control table.

(2) See range-clustered table.

 rCxt block

See remote context block.

 RDB

See relational database.

 RDB directory

The directory where remote databases in the network are registered. Information in a directory tells the system which communications parameters to use to connect to a remote database. The RDB directory also contains the name of the local database.

 RDBMS

See relational database management system.

 RDBMS Interface Module (RIM)

The module in the distributed object database that contains information about the installation of the relational database management system (RDBMS).

 RDF

(1) See record definition field.

(2) See Resource Description Framework.

 RDM

See resource definition macro.

 RDMA

See Remote Direct Memory Access.

 RDN

See relative distinguished name.

 RDO

See resource definition online.

 RDS

(1) See restart data set.

(2) See Relational Data Services.

 RDSA

See read-only dynamic storage area.

 RDT

See resource definition table.

 RDW

See record descriptor word.

 RE

(1) See remote extension.

(2) See regular expression.

 read access

An access intent that establishes the intent of an application to read the database (without making modifications) and to be protected from an updater's incomplete changes. It allows other applications to share the database. See also scheduling intent.

 read access list

A list that restricts a form so that only specified users can read documents created from the form. Use the reader's field to control access on a document-by-document basis.

 read access state

A state indicating that only read access to a table is allowed.

 readahead prefetching

A method of prefetching pages by looking ahead in a scan, which results in asynchronous retrieval of pages even though those pages are not located sequentially on disk.

 read authority

(1) A data authority that allows the user to look at the contents of an entry in an object.

(2) An authority subset that allows the user to read entries in an object. The system-recognized identifier is *R. *R authority combines object operational authority and read authority.

 read cache device (RCD)

A volatile solid-state disk that is optimized for use as memory for the extended adaptive cache.

 reader

(1) An internal program that reads jobs from an input device or a database file and places them on a job queue.

(2) In RJE, a program that reads jobs from a database file or interactive display station and sends them to the host system.

 reader access

An access level with which users can only read documents.

 reader DSP

A dynamic support program (DSP) that transfers job-related information, such as control statements, from an input device to the spool data set.

 read/execute authority

An object authority that allows the user to read entries in an object, run a program, and search a library or directory. Read/execute authority combines object operational authority, read authority, and execute authority. The system-recognized identifier is *RX.

 read-from-invited-program-devices operation

An input operation that waits for input from any one of the invited program devices for a user-specified time. See also read-from-one-program-device operation.

 read-from-one-program-device operation

An input operation that will not complete until the specified device has responded with input. See also read-from-invited-program-devices operation.

 read hit

Data requested by the read operation that is in the cache.

 readiness level

For an RSR database-level tracker, the level that determines whether a shadow database is ready to apply database changes as they are received from the active IMS. See also recovery-readiness-level database.

 read integrity

An attribute of a read request, which ensures the integrity of the data passed to a program that issues a read-only request. CICS recognizes two forms of read integrity: consistent and repeatable. See also dirty read, repeatable, consistent.

 read intent

The type of access intent that subsystems use to read data from a database.

 read lock

A lock that prevents any other process from setting a write lock on any part of the protected area. See also write lock.

 read miss

Data requested by the read operation that is not in the cache.

 read-only

Pertaining to data that can be read but cannot be modified.

 read-only access

An access level that permits a user or an application to read a document or record but not to update it. See also scheduling intent.

 read-only dynamic storage area (RDSA)

The key-0 storage area for all reentrant programs and tables below the 16MB boundary.

 read-only memory (ROM)

Memory in which stored data cannot be changed by the user except under special conditions.

 read-only variable

An automatic class selection (ACS) language variable that contains data set or system-derived information. It can be referenced, but not altered, in an ACS routine.

 read operation

An input operation that obtains data from a file or device and passes it to a program.

 read stability (RS)

An isolation level that prevents any row that is read from being changed by other applications until the transaction is completed. For WITH HOLD cursors, this applies to when the rows were actually read. For read-only WITH HOLD cursors, the rows might have actually been read in a prior transaction. RS also prevents any row that is changed by other applications from being read until the change is committed. A transaction that issues the same query more than once will read the same rows again, but it might also read additional phantom rows that were modified and committed by an application that is running concurrently. See also cursor stability, repeatable read, uncommitted read, isolation level.

 read trigger

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

 read with integrity

See read access.

 read without integrity

See read-only access.

 read/write authority

An object authority that allows the user to add, change, delete, and read entries in an object. Read/write authority combines object operational authority, read authority, add authority, update authority, and delete authority. The system-recognized identifier is *RW.

 read/write/execute authority

An object authority that allows the user to add, change, delete, and read execute entries in an object, run a program, and search a library or directory. Read/write/execute authority combines object operational authority, read authority, add authority, update authority, delete authority, and execute authority. The system-recognized identifier is *RWX.

 read/write head

The data sensing and recording unit of the diskette drive or tape drive.

 read/write variable

An automatic class selection (ACS) language variable that is assigned a value within an ACS routine. It can be referenced, and each ACS routine assigns a value to its own, unique, read/write variable.

 ready

Pertaining to a status where all the loaded and mounted image catalog entries are available for use by the active virtual optical device. Any image catalog entry with a status of unloaded is not available for use by the virtual optical device. The image catalog can be made ready by using the LODIMGCLG (Load Image Catalog) command with OPTION(*LOAD).

 Ready for IBM Tivoli software

Pertaining to a product that has passed rigorous product certification testing to ensure that the product delivers seamless integration with Tivoli technology management solutions and provides true end-to-end technology management functionality. A product that has passed this certification testing carries the Ready for IBM Tivoli software logo.

 ready queue

A MERVA queue used by SWIFT Link to collect SWIFT messages that are ready for sending to the SWIFT network.

 ready to send

A hardware handshake or signal that is sent by a device to indicate that it is ready to send data.

 real attribute

An attribute that must have a value.

 real GID

See real group ID.

 real group ID (real GID)

(1) For each user, the group ID defined in the password file.

(2) The attribute of a process that, at the time of process creation, identifies the group of the user who created the process. This value is subject to change during the process lifetime.

 realization relationship

In UML, a dependency relationship in which one class implements the behavior that another class specifies. See also dependency relationship, implementation relationship.

 realize

In the Web diagram editor, to associate a node with an actual resource by creating that resource or by editing the node's path so that it points to an existing resource. See also unrealized.

 realizes relationship

See realization relationship.

 realm

(1) In the Kerberos protocol, the set of principals for which a specific key distribution center (KDC) is the authenticating authority.

(2) A grouping of customers, organized by division, region, or company, which is used to separate customer data.

(3) A collection of resource managers that honor a common set of user credentials and authorizations.

 realm name

The machine name of a user registry.

 realm trust

The Kerberos protocol either searches the configuration file to determine realm trust or by default looks for trust relationships within the realm hierarchy. Using Trusted realms in network authentication service allows you to bypass this process and creates a shortcut for authentication. Realm trust can be used in networks where realms are in different domains. For example, if a company has one realm at NY.myco.com and another at LA.myco.com, then you can establish trust between these two realms. If two realms trust each other their associated KDCs must share a key. Before creating a shortcut, you must set up the KDCs to trust each other.

 real object

An object that represents an actual resource.

 real optical library

A physical storage device that houses optical disk drives and optical cartridges, and contains a mechanism for moving optical disks between a cartridge storage area and optical disk drives. See also pseudo optical library.

 real resource

(1) In VTAM, a resource identified by its real name and its real network identifier.

(2) In the NetView Graphic Monitor Facility, an individual network resource represented by a real object.

 real storage

The main storage in a virtual storage system. Physically, real storage and main storage are identical. Conceptually, however, real storage represents only part of the range of addresses available to the user of a virtual storage system.

 real-time

Pertaining to the processing of data by a computer in connection with another process outside the computer according to time requirements imposed by the outside process.

 real time

The processing of information that returns a result so rapidly that the interaction appears to be instantaneous.

 real-time analysis (RTA)

In CICSPlex SM, a function that provides the automatic notification of requested error conditions and all aspects of a resource's status. The notifications appear in console messages, or generic NetView for OS/390 alerts, or both.

 real-time gross settlement system (RTGS)

A payment system that settles, in real time, individual payments across central bank accounts. Payments must be secured by funds at the time the payment is made.

 real-time replication

See synchronous replication.

 Real Time Streaming Protocol (RTSP)

A protocol for streamed multimedia data over IP networks. Generally, RTSP offers services similar to a video store with delivery services, a VCR, or cable television. "VCR style" control functionality includes pause, fast forward, reverse, and absolute positioning.

 Real-Time Transport Protocol (RTP)

A protocol that provides end-to-end network transport functions suitable for applications transmitting real-time data, such as audio, video or simulation data, over multicast or unicast network services.

 real UID

See real user ID.

 real user ID (real UID)

(1) For each user, the user ID that is specified in the /etc/passwd file.

(2) The attribute of a process that, at the time a process is created, identifies the user who created the process.

 reasonable resource loaded value (RRLV)

A value used by PSF to keep the number of resources loaded at a manageable level. At data set end, PSF deletes resources for a particular resource type until this value is reached.

 reason code

(1) A return code that describes the reason for the failure or partial success of a Message Queue Interface (MQI) call.

(2) A value used to indicate the specific reason for an event or condition.

 reassembly

In OSI, a function performed by an (N)-entity to map multiple (N)-protocol-data-units into one (N)-service-data-unit. Reassembly is the opposite of segmenting.

 reassign

To mark a disk sector as damaged. The marked disk sector points to another sector location where the data from the damaged sector is moved.

 reassociation

An optimization technique that rearranges the sequence of calculations in a subscript expression producing more candidates for common expression elimination.

 reattach

In cross-site mirroring, to reassociate the mirror copy with its production copy after user operations on the mirror copy are complete. When the mirror copy is reattached, it is automatically synchronized to match the production copy again. All data on the mirror copy prior to when it is reattached to the production copy is cleared.

 reattachment event

An event whose firing has caused an activity to be activated.

 reattachment queue

A list of the reattachment events that have caused a particular activity to be activated. Each activity has a reattachment queue associated with it. The queue may be empty. Events remain on the reattachment queue until they are retrieved by the activity, or until a syncpoint occurs.

 rebalance

To restripe and redistribute data across the available hard disks after a disk or disks have been removed from a file system.

 rebase

A ClearCase operation that makes a development work area current with the set of versions represented by a more recent baseline in another stream, usually the project's integration stream or a feature-specific development stream.

 rebind

(1) To create a package for an application program by using information from the previously bound package. For example, in DB2 Database for Linux, UNIX, and Windows and DB2 for z/OS, if an index is added for a table that is accessed by a program, the package must be rebound for it to take advantage of the new index. See also automatic rebind, implicit rebind, explicit rebind.

(2) To request renewal of a lease from a system on a particular network.

 rebuild

To restore a database or a subset of its table spaces by using a set of table space restore operations.

 rebuild maintenance

A method of maintaining keyed access paths for database files. This method updates the access path only while the file is open, not when the file is closed; the access path is rebuilt when the file is opened. See also delayed maintenance, immediate maintenance.

 rebuild phase

The stage that a database is in from the time that the database successfully completes a rebuild restore operation until the first time that the database is rolled forward and log records start being processed.

 recall

(1) To access files that have been migrated from workstations to server storage.

(2) The process of moving a migrated data set from a level 1 or level 2 volume to a volume that is or is not managed by DFSMShsm. See also hierarchical storage management.

 recapture

In update-anywhere replication, to capture changes at a replica table and forward these changes to the master table or to other replica tables.

 receive

The handling of a stimulus passed from a sender instance. See also receiver, sender.

 receive-any control element (RACE)

Type of control field held in the CICS receive-any pool set aside for VTAM receive-any operations. The number of RACEs maintained depends on the RAPOOL and MXT system initialization parameters and on the number of active tasks.

 receive-any input area (RAIA)

Type of input area held in the CICS receive-any pool set aside for VTAM receive-any operations. The number of RACEs maintained depends on the RAPOOL and MXT system initialization parameters and on the number of active tasks.

 received line signal detector (RLSD)

See data carrier detect.

 received page counter

See channel counter.

 receive exit

A type of channel exit program that is called just after the message channel agent (MCA) has regained control following a communications receive and has received a unit of data from a communications connection. See also send exit.

 receive mode

A time during which the BSC adapter looks for synchronization characters, and stores the data characters in main storage.

 receive not ready (RNR)

In communications, a data link command or response that indicates a temporary condition of being unable to accept incoming frames.

 receive queue

In Q replication, a WebSphere MQ message queue that is used by a Q Apply program to receive transactions that are captured by a Q Capture program.

 receiver

(1) In hardware, a functional unit that converts small electronic signals to signals that control a device.

(2) The object handling a stimulus passed from a sender object. See also sender, receive.

(3) A defined role in WebSphere Commerce that receives inventory at the fulfillment center, tracks expected inventory records and ad hoc receipts for ordered products, and receives returned products as a result of customer returns. See also logistics manager.

(4) A component that accepts documents from external partners and from back end applications and stores them in a file system for the Document Manager to process. Specifically, it receives a document over a supported transport protocol, writes the document and metadata relating to the document to the shared file system, records any transport-specific data to the metadata file, and completes any transport-specific technical acknowledgment.

 receiver bean

In extended messaging, a message-driven bean or a session bean. A message-driven bean is invoked when a message arrives at a JMS destination for which a listener is active. A session bean polls a JMS destination until a message arrives, gets the parsed message as an object, and can use methods to retrieve the message data.

 receiver chain

The journal receivers presently or previously attached to the same journal. Each journal receiver, except the first one, has a previous receiver that was attached before the current receiver. Each journal receiver, except the currently attached receiver, has a next receiver.

 receiver chain break

A logical break in a receiver chain.

 receiver channel

In message queuing, a channel that responds to a sender channel, takes messages from a communication link, and puts them on a local queue.

 receiver directory

Summary information about the journal receivers that are or were attached to the specified journal and are still known to the system.

 receive ready (RR)

In communications, a data link command or response that indicates that a station is ready to receive protocol data units. Receive ready also acknowledges receipt of protocol data units.

 receive timeout

In data communications, a condition that occurs when no data is received in a given period of time.

 receiving cross-domain key

In Cryptographic Support, a cross-domain key used to decrypt a data-encrypting key that was encrypted by another location.

 recency, frequency, monetary (RFM)

A technique used to determine which customers are the best ones by examining how recently a customer has purchased (recency), how often they purchase (frequency), and how much the customer spends (monetary).

 receptacle

A hollowed electrical fitting that contains the live parts of a circuit.

 reception

A declaration that a classifier is prepared to react to the receipt of a signal.

 RECFMS

See record formatted maintenance statistics.

 recipient address

A string of data that represents the address associated with the recipient of the message. The contents and format of the string are not defined by the mail server framework. The address type associated with the recipient address is assumed to define the contents of the recipient address field.

 recipient history tree

A structure that represents the changes to the recipient list, so that a recipient can be traced back to the recipient entry in the original recipient list passed using the Create Mail Message application program interface (API).

 Recognition Engine server

In WebSphere Voice Server, the software that carries out the speech recognition and forwards the results to the client. This consists of one 'Tsm router' and at least one 'tsmp' and one 'engine'.

 recognition profile

In the 3270 Terminal Services tool, a list of the identifiers that uniquely identify the state of a screen, that is, the set of conditions that apply to the screen at the time the screen was imported from the host. Each screen state needs to be uniquely defined in its own recognition profile.

 recognition table

In the 3270 terminal services development tool, the table that appears in the screen editor and provides a screen definition view and a recognition profile view of the screen that was imported.

 recombining

In OSI, a function performed by an entity that is the reverse of splitting.

 Recommendation X.21 (X.21)

A document, CCITT Recommendation X.21, that outlines standards for a general-purpose interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) for synchronous operations on a public data network.

 Recommendation X.21 bis

A document, CCITT Recommendation X.21 bis, that outlines standards for the interface between data terminal equipment (DTE) and V-series data circuit-terminating equipment (DCE) for synchronous operations on a public data network.

 Recommendation X.31

A document, CCITT Recommendation X.31, that outlines standards for the X.25 protocol over integrated services digital networks (ISDNs).

 reconciliation

In identity management, the process of synchronizing the accounts and supporting data on the central data repository with the accounts and supporting data on the managed resource.

 RECON data sets

See recovery control data set.

 reconfiguration

The process of adding hardware units to, or removing hardware units from, a configuration.

 record

(1) The storage representation of a row or other data.

(2) A group of related data, words, or fields treated as a unit, such as one name, address, and telephone number.

(3) In programming languages, an aggregate that consists of data objects, possibly with different attributes, that usually have identifiers attached to them. In some programming languages, records are called structures.

 record address file

In RPG, an input file that indicates which records are to be read from another file and the order in which the records are to be read.

 record and playback

A performance monitoring function that is used to to record Web transactions and Microsoft Windows applications, and then play back the recordings to assess transaction performance and availability. See also playback policy.

 record area

In COBOL, a storage area in which a record described in a record description entry in the File Section is processed.

 record control byte (RCB)

In multileaving telecommunications access method (MTAM), a control character used to identify each record type within a transmission block.

 record data

Data sets with a record-oriented structure that are accessed record by record. This data set structure is typical of data sets on VM, MVS, and OS/400 systems. See also byte stream.

 record definition field (RDF)

In the Virtual Storage Access Method (VSAM), a field stored as part of a stored record segment; it contains the control information required to manage stored record segments within a control interval. See also control interval definition field.

 record description entry

In COBOL, the total set of data description entries associated with a particular record.

 record descriptor

Specifications that describe how record format line data records are formatted into individual print lines. Record descriptors are interpreted by PSF when formatting printed output.

 record descriptor word (RDW)

Data preceding a variable record that specifies the length of the entire record including the RDW.

 recorded telephone conference call

A telephone conference call that was scheduled as part of a Sametime meeting and recorded. After the meeting has finished, users can dial the access number to listen to the recorded call.

 record format

A named part of a file that identifies records of a specified record format description.

 record format definition

In IDDU, information that describes the arrangement or layout of fields in a record. A record format definition resides in a data dictionary.

 record format description

A description of the characteristics of the fields (for example, type and length) and the arrangement of the fields in a record created by the user.

 record format line data

A form of line data where each record is preceded by a 10-byte identifier. See also line data.

 record formatted maintenance statistics (RECFMS)

A statistical record built by an SNA controller and usually solicited by the host.

 record ID code

See record identification code.

 record identification code (record ID code)

Characters placed in a record to identify the record format.

 record identifier (RID)

A unique identifier that the DB2 database manager uses internally to identify a row of data in a table. See also row identifier.

 record identifier pool (RID pool)

An area of main storage that is used for sorting record identifiers during list-prefetch processing.

 record identifying indicator

An indicator that identifies the record just read.

 record ID information object

A Data Interchange Services object that contains control information for ROD document definitions. It identifies the type of ROD document definition being used and where the record ID, if any, is located in the records associated with the document definition.

 recording

The information from performance snapshots that can be viewed at a later time.

 recording format

For a tape volume, the format of the data on the tape, such as 18, 36, 128, 256, or 384 tracks.

 record interface

In PSF, coordinates the transmitting of printer resources needed to print a document.

 record key

(1) In COBOL, a key field whose contents identify a record within an indexed file.

(2) In RPG, all the key fields defined for the record type.

 record layout

In AFP Utilities, a part of the printout format definition that defines how each field of a database file record is formatted and printed by the print format utility.

 record length

The total length of all the columns in a table. The record length is the length of the data as physically stored in the database. Records can be fixed or variable in length, depending on how the columns are defined. If all columns are fixed-length columns, the record is a fixed-length record. If one or more columns are varying-length columns, the record is a varying-length record.

 record-level access

A means of supporting distributed files. Record-level access enables an application or user to read and update individual records of files on a remote system without specifying the data's location.

 record-level sharing (RLS)

See VSAM record-level sharing.

 record-level specification

A data description specification coded on the same line as a record format name or on lines immediately following a record format name (until the first field is specified).

 record-level subscriber (RLS)

An attribute of a user record that specifies which endpoints are subscribed to the user record.

 record mode

In MFS, the default input mode in which fields are defined as occurring within a specific record sent from the device. See also input mode, stream mode.

 record name

A user-defined name for a record. The name is listed in a record description entry.

 record number

In COBOL, the ordinal number of a record in the file whose organization is sequential.

 record-only mode

The operating mode in which DFSMSrmm records information about volumes as they are used, but does not validate or reject volumes. See also warning mode, manual mode.

 record oriented data (ROD)

The type of document definition used to describe proprietary document formats. One of the supported document syntax types.

 record oriented data dictionary (ROD dictionary)

A logical grouping of related ROD document definition components.

 record oriented data document definition (ROD document definition)

A description or layout of a proprietary document, comprising loops, records, structures, and fields.

 record oriented data field (ROD field)

A single item of data, such as a purchase order number, in a record oriented data (ROD) document definition. A ROD field corresponds to an EDI data element in an EDI document definition.

 record oriented data loop (ROD loop)

A group of consecutive records and loops that repeat together in a ROD document definition.

 record oriented data record (ROD record)

A group of logically related fields set up as a record in a ROD document definition.

 record oriented data structure (ROD structure)

A group of related fields in a ROD document definition, such as the fields making up the line item of an invoice. The record oriented data (ROD) structure corresponds to an EDI composite data element in an EDI document definition.

 record-oriented file

A file with a record-oriented structure that is accessed record by record. This file structure is typical of data sets on VM, MVS, and OS/400 systems. See also stream data file.

 record resource block (RRB)

 record selection

The process of selecting particular records from a file and including the information from the records, for example, in a report.

 record separator

In BSC, a control character used to indicate the end of one record and the beginning of another.

 record type

The classification of records in a file. Records of the same type have the same fields in the same order. For program-described files, these records have record identification codes; for externally described files, the records have the same record format name.

 recover

To rebuild data after it has been damaged or destroyed.

 recoverability

(1) The degree or extent to which the system can be restored to an operational condition after a system failure.

(2) The ability of a system to continue processing without loss of data when an unplanned interruption occurs.

 recoverable data

Data with values that persist through system shutdowns and failures. Changes made to recoverable data are permanent regardless of system problems.

 recoverable data set

A data set that can be recovered using commit, backout, or forward recovery processing. See also commit, forward recovery, backout.

 recoverable in-doubt structure (RIS)

In DBCTL, an area constructed for each unit of recovery when a failure occurs. Each RIS is written to the IMS log. RIS contents include the recovery token, the changed data records, and the identity of the data block that cannot be accessed because of unresolved in-doubts.

 recoverable resource

(1) A resource that can be modified only in accordance with sync point protocols.

(2) See protected resource.

 recoverable resource management services (RRMS)

The set of three system components that provide resource recovery services in z/OS: resource recovery services (RRS), context services, and registration services.

 recoverable service element (RSE)

(1) A service element (IMS) that is backed up and that can initiate a takeover.

(2) A set of DBCTL subsystem identifiers of equivalent DBCTL subsystems, their associated job names, and the specific APPLIDs of the CICS systems that will use them. RSEs are defined by CICS resource definition macros and are held in the recoverable service table (RST). See also equivalent, recoverable service table.

 recoverable service table (RST)

CICS control table used for IMS/ESA DBCTL support. The RST consists of recoverable service elements (RSEs), which define the DBCTL subsystems to which each CICS system can connect. See also equivalent, recoverable service element.

 recoverable status

Any resource status that can be recovered after a terminal logoff, a user signoff, or an IMS restart.

 recoverable transaction

An IMS transaction that is recovered in the event of a failure.

 recovery

(1) The process of re-creating a database or table space that became unusable because of hardware failure, software failure, or both. The process includes restoring a backup image and can also include rolling database logs forward in time.

(2) In Backup, Recovery, and Media Services, the process of locating and restoring data in the event of partial or total data destruction. The recovery service automatically locates the correct media to be restored based on user-defined media management and recovery requirements.

(3) The process of returning the system to a state from which operation can be resumed.

(4) The restoration of resources following an error.

(5) The process of rebuilding data after it has been damaged or destroyed, often by using a backup copy of the data or by reapplying transactions recorded in a log.

(6) The process of restoring access to file system data when a failure has occurred. Recovery can involve reconstructing data or providing alternative routing through a different server.

 recovery authority

The person or persons who are authorized to recover IDs and to reissue new passwords to end users.

 recovery control data set (RECON data sets)

A data set in which DBRC stores information about logging activity and events that might affect the recovery of databases.

 recovery domain

A subset of nodes in a cluster that are grouped together for a common purpose, such as rebuilding databases after a system failure. A domain represents those nodes of the cluster where cluster resource exists.

 recovery event

An event occurs when acceptable performance (or availability) is regained after a violation. See also violation event.

 recovery-level tracking

In an RSR environment, a tracking IMS that does not track the databases or areas of the active IMSs, but instead saves all database changes on tracked logs on the tracking IMS until recovery or remote takeover is performed See also database-level tracking.

 recovery library

The library containing information related to recovery of database operations from system failures. Named QRECOVERY.

 recovery log

(1) See database log.

(2) In WebSphere MQ for z/OS, data sets containing information needed to recover messages, queues, and the WebSphere MQ subsystem. See also archive log, active log.

(3) A collection of records that describes the events that occur during DB2 execution and indicates their sequence. The recorded information is used for recovery in the event of a failure during DB2 execution.

 recovery log data set (RLDS)

A log data set that contains only the log records that are required for database recovery.

 recovery manager

(1) CICS resource recovery mechanism that provides a CICS resource manager, for example file control, with more flexibility than the DWE two-phase commit support for syncpoint and backout processing.

(2) A subcomponent that supplies coordination services that control the interaction of DB2 resource managers during commit, abort, checkpoint, and restart processes. The recovery manager also supports the recovery mechanisms of other subsystems (for example, IMS) by acting as a participant in the other subsystem's process for protecting data that has reached a point of consistency.

(3) A coordinator or a participant (or both), in the execution of a two-phase commit, that can access a recovery log that maintains the state of the logical unit of work and names the immediate upstream coordinator and downstream participants.

 recovery pending (RECP)

The state of a database or table space when it is restored from a backup. While the database or table space is in this state, its data cannot be accessed.

 recovery point

In the CICS backup-while-open facility, the latest point, on the CICS forward recovery log series for this data set, from which forward recovery can start and restore any image copy taken at that point to a consistent state. The recovery point is held as a time that can be converted to a position on the forward recovery log.

 recovery policy

In Backup, Recovery, and Media Services, a policy that defines the default controls and values to be used in recovery operations.

 recovery procedure

An action performed by the operator when an error message appears on the display screen. This action usually permits the program to continue or permits the operator to run the next job.

 recovery-readiness-level database

In an RSR environment, a database or area to which database changes are not applied as they are received from the active subsystem, but instead are saved on tracked logs on the tracking subsystem until recovery or remote takeover is performed, or until the database's (or area's) readiness level is changed to database readiness level. See also readiness level.

 Recovery Resource Services attachment facility (RRSAF)

A DB2 subcomponent that uses Resource Recovery Services to coordinate resource commitment between DB2 and all other resource managers that also use RRS in a z/OS system. See also call attachment facility.

 recovery routine

A routine that is entered when an error occurs during the performance of an associated operation. It isolates the error, assesses the extent of the error, and attempts to correct the error and resume operation.

 recovery system

A system that is used in place of a primary application system that is no longer available for use. Data from the application system must be available for use on the recovery system; data is usually made available through backup and recovery techniques, or through various direct access storage device (DASD) copying techniques, such as remote copy.

 recovery termination manager (RTM)

A program that handles all normal and abnormal termination of tasks by passing control to a recovery routine associated with the terminating function.

 recovery token

(1) An identifier for an element that is used in recovery (for example, NID or URID).

(2) A 16-byte unique identifier that is created by CICS and passed to DBCTL for each logical unit of work (LUW). See also pseudorecovery token.

 recovery volume

The first volume of a prime index if the Virtual Storage Access Method (VSAM) data set is a key-sequenced cluster. If the VSAM data set is entry-sequenced, a recovery volume is the first volume of the data set.

 RECP

See recovery pending.

 recurring wait time trigger

A trigger that is evaluated based on a period of time. For example, a recurring wait time trigger can be evaluated every 30 minutes and fire if it detects that a specific business situation has occurred.

 recursion

A programming technique in which a program or routine calls itself to perform successive steps in an operation, with each step using the output of the preceding step.

 recursion cycle

The cycle that occurs when a fullselect within a common table expression includes the name of the common table expression in a FROM clause.

 recursion level

The position of a program in a call stack. The first occurrence of a program in a job has a recursion level of 1, the second occurrence of the same program has a recursion level of 2, and so on.

 recursive

Pertaining to a program or routine that calls itself after each run until it is interrupted.

 recursive common table expression

A common table expression that refers to itself in a FROM clause from the fullselect. Recursive common table expressions are used to write recursive queries.

 recursive mutex

A read/write lock that is acquired again by the owning thread.

 recursive procedure

An active procedure that can be called from within itself or from within another active procedure.

 recursive program

A program that can call itself, or be called by another program, and repeat indefinitely until a specified condition is met.

 recursive query

A fullselect that uses a recursive common table expression.

 recursive routine

A routine that can call itself or be called by another routine that it has called.

 recycle process

A DFSMShsm process that, based on the percentage of valid data on a tape backup or a migration-level-2 volume, copies all valid data on the tape to a tape spill backup or migration-level-2 volume, omitting expired, deleted, or recalled data sets.

 redeployment

The process of synchronizing a hard-disk content to its reference image strored in a hidden and protected partition.

 redeployment preload

The process of creating a reference image of a computer at the end of a deployment, and saving this reference image into a protected redeployment partition. This protected partition is invisible to the user and to the operating sytem.

 redirect

To divert data from a process to a file or device to which it would not normally go.

 redirected distribution

A method of software distribution that uses a file-distribution server.

 redirection

In a shell, a method of associating files with the input or output of commands.

 redirection URL

A URL used in a URL command to indicate the page that should be sent to the customer upon completion of the command. See also shopping flow URL.

 rediscovery

A type of discovery in which a program finds resources that were moved and updates the record of their location, including the location of resources that were deleted. For example, resources that were previously discovered, but are no longer found, are deleted.

 redo

A state of a unit of recovery that indicates that changes are to be reapplied to the disk media to ensure data integrity.

 REDO

The DEDB process in the second phase of a two-phase commit process if the chosen action is COMMIT. For DEDBs, if phase two action is COMMIT, the changes are written to the database using REDO, because the DEDB changes have only been made in main storage. If the action is BACKOUT, no changes are required to the database because the updates are still in main storage. The process applied is called UNDO. REDO is also used to refer to the action required for committed DEDBs during emergency restart of IMS, DL/I, or SQL/DS.

 reduce

To free up enough space such that you can delete a volume from the database or recovery log. See also extend.

 reduced instruction set computer (RISC)

A computer that uses a small, simplified set of frequently used instructions for rapid processing. See also complex instruction set computer.

 reduced-sign-on plug-in

A plug-in that reduces the steps that it takes for a user to sign on to an application.

 Redundant Array of Independent Disks (RAID)

A collection of two or more physical disk drives that present to the host an image of one or more logical disk drives. In the event of a physical device failure, the data can be read or regenerated from the other disk drives in the array due to data redundancy. See also device parity protection, Serial Storage Architecture, array.

 redundant dual active controller

A software device driver, used with AIX, Solaris, Linux, Windows, and NAS 500 hosts, and the DS4000 disk subsystems, that provides multipath and load balancing capabilities.

 redundant SAN

A storage area network (SAN) configuration in which any single component might fail, but connectivity between the devices within the SAN is maintained, possibly with degraded performance. This configuration is normally achieved by splitting the SAN into two independent, counterpart SANs. See also counterpart SAN.

 reenterable

Pertaining to a module that is designed for concurrent execution by multiple tasks. If a reenterable module modifies its own data areas or other shared resources in any way, it must use appropriate serialization methods to prevent interference between using tasks. See also quasi-reentrant.

 reentrance

A situation where a thread of control attempts to enter a bean instance again.

 reentrant

The attribute of a program or routine that allows the same copy of the program or routine to be used concurrently by two or more tasks.

 reentrant code

Executable code that can reside in storage as one shared copy for all threads. Reentrant code is not self-modifying and provides separate storage areas for each thread. See also threadsafe.

 refactor

(1) To transform a program, for example by renaming a package or method, while preserving its behavior.

(2) To make changes across a set of artifacts without changing the behavior of the application or its relationships to other elements.

 reference

(1) In VisualAge RPG, information from a physical source file that may be extracted at build time. Any changes made to the original source must be recompiled to reflect the changes at run time.

(2) Single direction, one-to-one association between a root or child component and another root component. See also link.

(3) Logical names defined in the application deployment descriptor that are used to locate external resources for enterprise applications. At deployment, the references are bound to the physical location of the resource in the target operational environment.

(4) A named slot within a classifier that facilitates navigation to other classifiers.

(5) A pointer to another instance that defines the role and scope of an object in an association.

 reference class

A class that links a concrete class to an abstract class. Reference classes make polymorphism possible with the collection classes.

 reference code

A group of characters that identifies the machine status or a specific error condition.

 reference code translation table

An object that contains reference code and field-replaceable-unit (FRU) code records. These records are used to report hardware errors and do problem analysis and resolution. The system-recognized identifier for the object type is *RCT.

 referenced installable unit (referenced IU)

A root installable unit that is independently packaged and that is aggregated within another root installable unit by a reference. The reference is made from the deployment descriptor of the aggregating root installable unit to the deployment descriptor of the aggregated root installable unit.

 referenced IU

See referenced installable unit.

 referenced type

An object that is referred to by a source object. See also associated type.

 referenced window record

In DDS, a record containing the WINDOW keyword that identifies the name of a window definition record.

 reference format

A format that provides a standard method for describing COBOL source programs.

 reference frame

See information frame.

 reference line

In Business Graphics Utility, a straight line parallel to either the vertical or horizontal axis relative to which data values are plotted on a chart. Sometimes called a translated axis line.

 reference message

A message that refers to a piece of data that is to be transmitted. The reference message is handled by message exit programs, which attach and detach the data from the message so allowing the data to be transmitted without having to be stored on any queues.

 reference model

(1) In the context of Tivoli software, the model configuration for a system, or set of systems, that is used to maintain consistent configurations in a distributed environment.

(2) A model that contains model information from one referenced component. Reference models are kept as separate models and are included by reference into code projects.

 reference modification

In COBOL, a method of establishing and referring to a data item by specifying a leftmost character position and length within a character string.

 reference modifier

In COBOL, the leftmost character position and the length of a character string used to establish and refer to a data item.

 reference modify

To establish and refer to a COBOL data item by specifying a leftmost character position and length within a character string.

 reference monitor

In the Distributed Computing Environment (DCE), code that controls access to an object.

 reference phrase

The text that is highlighted and preceded by a single-character input field used to signify the existence of a hypertext link.

 reference set

The amount of real storage required so that minimal (almost zero) virtual paging occurs. It is the total amount of real storage required to process the most frequently used sequence of instructions and data for a given set of transactions performing defined tasks, without causing any virtual storage paging operations.

 reference store

An online store that contains fully functional code for selected features of an online store, for example, auctions. Reference stores are designed to be used by store developers as code samples of the highlighted features.

 reference-valued business object

A business object that contains data values only for its key attributes. See also foreign key attribute, full-valued business object.

 referential constraint

The requirement that the nonnull values of a designated foreign key are valid only if they also appear as values of the primary key of the parent table. The referential constraint is always defined from the perspective of the dependent file. See also constraint.

 referential cycle

A set of referential constraints such that each table in the set is a descendent of itself. See also cycle.

 referential integrity

(1) The state of a database in which all values of all foreign keys are valid. Maintaining referential integrity requires the enforcement of a referential constraint on all operations that change the data in a table where the referential constraints are defined.

(2) The condition that exists when all intended references from data in one column of a table to data in another column of the same or a different table are valid.

(3) In Extensible Markup Language (XML) tools, the condition that exists when all references to items in the XML schema editor or DTD editor are automatically cleaned up when the schema is detected or renamed.

 referential integrity analysis

A type of analysis that is run after foreign key analysis to ensure that foreign key candidates match the values of an associated primary key.

 referential structure

A set of tables and relationships such that for every table in the set, the set includes all relationships in which that table participates and all the tables to which it is related.

 referral

(1) In the Lightweight Directory Access Protocol (LDAP), a pointer from one LDAP directory server to another.

(2) A way for servers to refer clients to additional directory servers. With referrals you can: distribute namespace information among multiple servers, provide knowledge of where data resides within a set of interrelated servers, and route client requests to the appropriate server.

(3) A record that shows number of times a third-party business or Web site has referred customers to the Web site. Referrals can be measured for recognition purposes through various techniques including clickstream analysis, clickthrough rates, affiliate marketing services, and surveys.

 referral number

The phone number to which calls are routed, when call forwarding is active.

 reflective marker

In hardware, reflective material placed on magnetic tape to indicate the beginning or ending of the recording area.

 refresh

To ensure that the information on the user's terminal screen is up-to-date.

 refresh age

The time duration between the current time and the time during which a materialized query table was last refreshed.

 refresh pack

A cumulative collection of fixes that contains new functions. See also fix pack, test fix, interim fix, manufacturing refresh, fix.

 refund

In WebSphere Commerce Payments, the credit amount in the smallest denomination of the particular currency used to place the order.

 region

(1) In MVS, a variable-size subdivision of virtual storage that is allocated to a job step or system task. CICS Transaction Server runs in an MVS/ESA region, usually referred to as the CICS region.

(2) A physical instance of a CICS server.

(3) A contiguous area of virtual storage that has common characteristics and that can be shared between processes.

 region class

The class IMS assigns to a message region that indicates the message classes that can be processed within the region. See also class, message class.

 region-remote

A term used in early releases of CICS to refer to a CICS system in another region of the same processor. It can be taken to refer to a system that is accessed through an IRC (MRO) link, rather than through an SNA LU6.1 or LU6.2 link.

 region size

The amount of main storage available for a program to run.

 register

(1) An internal computer component capable of storing a specified amount of data and accepting or transferring this data rapidly.

(2) In the hierarchical file system, to make an underlying file system and the specific functions it supports known to the application programming interface layer and accessible to user applications.

(3) To insert authorization and authentication information into binding information.

(4) In SQL replication, to define a DB2 table, view, or nickname as a replication source.

(5) To add a user-written condition handler onto a routine's stack frame.

 registered customer

(1) A customer who is registered with a store. To register, a customer provides personal information to the WebSphere Commerce system, such as an e-mail address.

(2) In WebSphere Commerce, a defined role that allows the reseller to shop in the marketplace. Resellers must first register in the marketplace and be approved by the seller administrator in order to attain the registered customer role.

 registered enterprise-unique identifier

A name given to an entire network that makes the network unique among other networks, including IBM networks. New users are requested to register the network name with IBM if they plan to communicate with IBM networks (for PTF information, for example).

 registered filter

A filter that allows more than one active filter for alerts and problem logs. When a filter is registered, the system can send notification of events to a data queue. Registered filters behave slightly different than filters exposed through the network attributes or system value commands.

 registered name

In a Tivoli environment, the name by which a particular resource is registered with the name registry when it is created.

 registered state change notification (RSCN)

A switch function that allows notification of fabric changes to be sent from the switch to specified nodes.

 registered user

A portal user who has a user ID and password for logging in to a portal. See also anonymous user, authenticated user.

 register save area (RSA)

The area of main storage in which the contents of registers are saved.

 register variable

A variable defined with the register storage class specifier. Register variables have automatic storage.

 registration

(1) In OSI, the process of obtaining identifiers for objects from the appropriate naming authorities. Registered identifiers should be obtained for the following objects, which relate to OSI Communications Subsystem operations: (a) NSAP addresses, (b) DTE addresses, (c) abstract syntaxes, (d) application contexts, and (e) application entities.

(2) In X.25, the process used between a DTE and a DCE to establish an agreement on which optional user facilities will be in effect. For example, the DTE can request that the DCE agree to or stop a previous agreement for an optional user facility. Also, a DCE can indicate which optional user facilities are available or which optional user facilities are currently in effect. The negotiation is accomplished through the exchange of registration packets.

(3) In SQL replication, the process of registering a DB2 table, view, or nickname as a replication source. See also subscription.

(4) The process of creating an object in the installation database that uniquely identifies the managed resource in the hosting environment.

(5) In Resource Recovery Services (RRS), the definition of a resource manager to the system.

 registration authority

A trusted third-party organization or company that verifies requests from individuals for a digital certificate and tells the certificate authority (CA) to issue it.

 registration facility

A service that provides storage and retrieval operations for i5/OS and non-i5/OS exit points and exit programs.

 registration facility repository

The repository that contains information about the i5/OS and non-i5/OS exit points and exit programs.

 registration name

A predefined user ID embedded in a URL or a CD that is used by a potential customer to log in to the enrollment system. Registration names are paired with access codes for the enrollment process. See also access code.

 registration process

In replication, the process of defining a replication source.

 registration service

(1) In the Tivoli common agent services, the service provided by the agent manager to validate and process requests for X.509 certificates from common agents and management applications. It functions as a registration authority.

(2) The z/OS system component that enables a resource manager to register itself with the system and identify the exit routines it provides for resource recovery.

 registry

(1) In a Microsoft Windows operating system, a database that contains system configuration information regarding the user, the hardware, and the programs and applications that are installed. Windows operating systems refer to the registry during operation.

(2) A repository that contains access and configuration information for users, systems, and software.

(3) A database where services are enrolled along with a pointer to each service.

 registry database

In a z/OS environment, a database of security information about principals, groups, organizations, accounts, and security policies.

 Registry Editor

In Windows, the program item that allows the user to edit the registry.

 registry hive

In Windows systems, the structure of the data stored in the registry.

 registry scanner

Software that searches the registries for and retrieves information on installed software products and patch status.

 ReGS

See Reporting Grid Services.

 regular command

A command processed by a regular command processor. Regular commands can run concurrently with other regular commands and can be interrupted by immediate commands. Most commands and all command lists are regular commands. See also immediate command.

 regular expression (RE)

(1) A set of characters, meta characters, and operators that define a string or group of strings in a search pattern.

(2) A string containing wildcard characters and operations that define a set of one or more possible strings. See also literal string.

(3) A mechanism for selecting specific strings from a set of character strings.

(4) A sequence of characters or symbols constructed according to the rules defined in POSIX.2 2.8.

 regular expression annotator

A software component that detects entities or units of information in a text document, such as product numbers, based on regular expressions that describe the exact patterns that are searched in the document text. If one of the regular expressions matches parts of the document text, the regular expression annotator creates the corresponding annotations that cover the match or part of it. These annotated expressions are then stored, either in the enterprise search index using an index mapping file, or a JDBC-capable database using a database mapping file.

 regular file

A file that is a randomly accessible sequence of bytes, with no further structure imposed by the system. [POSIX.1]

 regular table space

A table space that stores persistent data in either database-managed space or system-managed space but that has a smaller space limit than that of a large table space. See also permanent table space.

 REJ

See reject.

 reject (REJ)

In communications, a data link command or response used to request the resending of information frames.

 rejected

Pertaining to a status condition that describes a node that the cluster software has removed from the working set of nodes in the cluster.

 rejected transaction

A transaction that contains one or more updates from replica tables that are in conflict with the master table.

 rejection

The identification of an utterance as one not allowed by a grammar.

 rejoin

To become an active member of an entity after having been a nonparticipating member.

 related view

A view that uses, or is dependent on, another object, such as the parent view of a table.

 relation

An unordered flat collection class that uses keys, allows for duplicate elements, and has element equality.

 relational character

In COBOL, one of the characters that express a relationship between two operands: equal to, greater than, less than.

 relational checking

(1) The evaluation of the operands in a relational expression, based on the relational operator used.

(2) In RPG, tests performed against two statements in a source program to ensure that the statements are valid (for example, a GOTO operation must have an associated TAG operation). This type of checking is done only by the compiler as opposed to single-statement syntax checking that is done by the SEU function.

 relational condition

In COBOL, a condition that relates two arithmetic expressions, data items, or both.

 relational cube

A set of data and metadata that defines a multidimensional database. A relational cube is the portion of a multidimensional database that is stored in a relational database.

 relational data

Data stored in a relational database management system (DBMS).

 relational database (RDB)

A database that can be perceived as a set of tables and manipulated in accordance with the relational model of data. Each database includes a set of system catalog tables that describe the logical and physical structure of the data, a configuration file containing the parameter values allocated for the database, and a recovery log with ongoing transactions and archivable transactions.

 relational database management system (RDBMS)

A collection of hardware and software that organizes and provides access to a relational database.

 Relational Data Services (RDS)

The component of the DB2 database manager that processes requests to access or manipulate the contents of a database. For SQL requests, RDS processing involves translating statement text into an executable section, running that section, and returning the result set to the requestor.

 relational expression

A logical statement that describes the relationship (such as greater than or equal to) of two arithmetic expressions or data items.

 relational operator

(1) The reserved words or symbols used to express a relational condition or a relational expression.

(2) In COBOL, a reserved word, a relational character, a group of consecutive reserved words, or a group of consecutive reserved words and relational characters used to express a relational condition.

(3) Any of the set of operators that express an arithmetic condition that can be either true or false. The operators are: .GT., .GE., .LT., .LE., .EQ., and .NE.. They are defined as greater than, greater than or equal to, less than, less than or equal to, equal to, and not equal to, respectively.

 relational schema

See SQL schema.

 relationship

(1) A defined connection between the rows of a table or the rows of two tables. A relationship is the internal representation of a referential constraint.

(2) An association between two or more data entities in the WebSphere business integration system. Most often, these entities are business objects. Relationships are used to transform data that is equivalent across business objects but is represented differently.

(3) A semantic connection among model elements. Examples of relationships include associations and generalizations.

(4) An association between two components that enables management applications to perform or assist in operations, such as problem determination, based on an understanding of that association. Types of relationships include the federates relationship, has components relationship, hosts relationship, supersedes relationship, and uses relationship.

(5) Pertinent to remote copy and Peer-to-Peer Remote Copy, the association between a master virtual disk (VDisk) and an auxiliary VDisk. These VDisks also have the attributes of a primary or secondary VDisk. See also auxiliary virtual disk, secondary virtual disk, master virtual disk, primary virtual disk.

 relationship definition

An entity that identifies each participant and specifies how the participants are related. Relationship definitions are stored in the repository.

 Relationship Designer

A code-generation tool with which you create and edit relationship definitions to define identity and lookup relationships between attributes of source and destination business objects. Relationship Designer also allows you to create and edit participant definitions, which define the attributes that participate in the relationship.

 relationship instance

The runtime instantiation of the relationship. The relationship definition is a template for the relationship instance.

 relationship instance ID

An integer identifier that is unique for each relationship instance. The WebSphere business integration system assigns relationship instance IDs to relationship instances. This instance ID allows the WebSphere business integration system to correlate the participant values. In general, given any participant in a relationship, you can retrieve the data for any other participant in the relationship by specifying the relationship instance ID.

 relationship management application (RMA)

An application used to manage authorizations. Among other things, it converts bootstrap authorizations created by WebSphere BI for FN into the RMA authorizations required to satisfy FIN PV03.

 Relationship Management Data Store (RMDS)

A set of database tables in which WebSphere BI for FN stores data about bootstrap and RMA authorizations.

 relationship manager

A tool for creating and manipulating relationship and role data at run time.

 relationship registry

The common database technology used to store information in application-specific and common repositories for use within a heterogeneous IT environment.

 relationship role

In EJB programming, a traversal of the relationship between two entity beans in one direction or the other. Each relationship that is coded in the deployment descriptor defines two roles.

 relationship service

A service used to model and maintain relationships across business objects and other data

 relationship table

A database table that holds the relationship runtime data for one participant in a relationship. InterChange Server stores relationship instances in relationship tables, with one table (sometimes called a participant table) storing information for one participant in the relationship.

 relative byte address (RBA)

The offset of a data record or control interval from the beginning of the storage space that is allocated to the data set or file to which it belongs.

 relative data

In Business Graphics Utility, values in a computer image that specify points relative to other points in the image.

 relative distinguished name (RDN)

(1) In the DCE X/Open Directory Service (XDS), a set of Attribute Value Assertions (AVAs), each of which is true, concerning the distinguished values of a particular entry.

(2) The part of an object name that is an attribute of the object itself.

(3) The first component of the distinguished name (DN). For example, if the entry's DN is cn=John Doe,ou=Test,o=IBM,c=US, the RDN is cn=John Doe.

 relative end position

In RPG, an entry on the output specifications that indicates the number of blank positions that are to appear between a field or constant defined on one specification line and the field or constant defined on the preceding specification line. See also exact end position.

 relative file number

In the DDS for a join logical file, a sequential number assigned to a physical file based on the position of that file on the JFILE keyword specification.

 relative host name

The specific subname of a fully qualified host name. For example, smith is a relative host name for smith.endicott.ibm.com.

 relative key

In COBOL, an unsigned number that can be used directly by the system to locate a record in a file.

 relative metrics

Measurement information that is defined in relation to some other units. Relative values are expressed as fractional parts of a unit-square design space (em square), whose sides correspond to the vertical size of the font. See also bounded-box relative metric, fixed metrics, font metric.

 relative-name format

A print descriptor naming convention that uses group alias names instead of system-specific (actual) group names.

 relative organization

In COBOL, the file organization in which each record is uniquely identified by a positive number value that specifies the position in the file relative to the first record.

 relative path

A path that begins with the working directory. See also absolute path.

 relative path name

A string of characters that is used to refer to an object and that starts at some point in the directory hierarchy other than the root. The starting point is frequently a user's current directory. See also absolute path name.

 relative positional pattern

In REXX, the part of a parsing template that uses a plus or minus sign to indicate movement relative to a previous pattern match.

 relative record data set (RRDS)

A type of Virtual Storage Access Method (VSAM) data set whose records have fixed or variable lengths, and are accessed by relative record number.

 relative record number (RRN)

A number that expresses the location of a record in relation to a base position in the file containing it.

 relative-size pie

In Business Graphics Utility, a piece on a pie chart drawn proportionally to another piece.

 relative start generation

An indicator of the generation level of a tape. Relative-start-generation zero is the latest generation of a tape; relative-start-generation -1 is the previous generation of that tape; relative-start-generation -2 is the generation before the previous one.

 relative time

In the Distributed Computing Environment (DCE), a discrete time interval that is usually added to or subtracted from an absolute time.

 relay agent

A program that delivers Dynamic Host Configuration Protocol (DHCP) packets to a local system.

 relay node

See relay open system.

 relay open system

In OSI architecture, an open system that forwards data received from one open system to another open system. (T) See also adjacent destination node.

 relay program

In transaction routing, a CICS program that provides the communication mechanism between a locally-connected terminal and a transaction in a remote system. The relay program is invoked by the relay transaction.

 relay transaction

In transaction routing, a CICS transaction that handles communication between a locally-connected terminal and a transaction in a remote system. The relay transaction invokes the relay program.

 release

(1) A distribution of a new product or new function and authorized program analysis report (APAR) fixes for an existing product. The first version of a product is announced as Release 1 Modification Level 0.

(2) In a WebSphere Commerce store, a set of products in a given order that have the same ship-to address, ship time, shipping method, fulfillment center, and shipping carrier. See also packing slip.

(3) A subset of an end-product that is the object of evaluation at a major milestone. A release is a stable, executable version of product, together with any artifacts necessary to use this release, such as release notes or installation instructions. See also baseline, prototype.

(4) To send changed files from the workbench to the team server so that other developers on the team can catch up (synchronize) with the updated version.

(5) To remove suspend criteria from an item. A suspended item is released when the criteria have been met, or when a user with proper authority overrides the criteria and manually releases it.

 release character

The character that indicates that a separator or delimiter is to be used as text data instead of as a separator or delimiter. The release character must immediately precede the delimiter.

 released state

The state of a connection that results in a disconnect of the connection at the next commit operation. See also held state.

 release lever

A part that unlocks the device so it can be pulled out of the rack on the slides.

 Release Link Trunk (RLT)

A custom specification from Nortel for ISDN call transfer.

 release management process owner

The super-user role in Release Process Manager. A release management process owner can perform any operation in the tool.

 release manager

(1) A person who is responsible for ensuring that all software assets are controlled and and can be released as required.

(2) A defined role in Release Process Manager. Multiple users can have this role; the release manager can create and own a release and transfer ownership to another release manager.

 release owner

A user who oversees the process of carrying out a release. The release owner is typically the release manager who creates a release, but ownership can be transferred to another release manager.

 release-program-device operation

An operation that makes a program device not available for input/output operations. See also acquire-program-device operation.

 release token

In OSI, the token that controls the orderly release of an association.

 reliability

(1) A measurement of the ability of a system to continue processing without failure. Shutting down an on-line system to process batch updates to the database reduces its availability to end users but has no bearing on the reliability of components required to deliver the online service.

(2) The ability of a system to continue to return data even if a component fails.

 reliable messaging

The execution of a transport independent, SOAP-based protocol that provides quality of service in the reliable delivery of messages.

 Reliable Scalable Cluster Technology (RSCT)

A set of software components that together provide a comprehensive clustering environment for AIX and Linux. RSCT is the infrastructure used by a variety of IBM products to provide clusters with improved system availability, scalability, and ease of use.

 reliable transfer server (RTS)

In OSI X.400, a portion of X.400 that is responsible for creating and maintaining application associations and for reliably transferring distributions between message transfer agents.

 reload function

In PSF, the Resource Exit can request that a resource be "reloaded." PSF will not use an existing version of the resource but will load the resource from a host library.

 REM

See ring error monitor.

 Rembo-C

A programming language, descendant of the C language combined with traces of JavaScript and Java.

 remigration

The process of returning to a current release of a DB2 database system following a fallback to a previous release. This procedure constitutes another migration.

 remote

(1) Any object that is maintained by a remote DB2 subsystem (that is, by a DB2 subsystem other than the local one). A remote view, for example, is a view that is maintained by a remote DB2 subsystem. See also local.

(2) Pertaining to a system, program, or device that is accessed through a communication line.

 Remote Abstract Window Toolkit for Java

An implementation of the Abstract Window Toolkit (AWT) that allows Java applications to run on a host system that does not have a graphical user interface (GUI). The server does not support locally attached graphic workstations; therefore, Remote AWT is necessary to allow graphical Java applications to run on the server.

 Remote Access Dial-In User Service

A server that authenticates a user's password and identification before sending the information on to an Internet Service Provider (ISP) server. The server also maintains accounting records of network usage for separate users. TCP/IP services and applications, such as Point-to-Point Protocol (PPP), can rely on a RADIUS server for authentication and accounting functions.

 Remote Access Service

Windows NT software that provides network capabilities over a modem link and contains functions that support point-to-point wide area network connections. For i5/OS, this includes both outgoing (originator) and incoming (receiver) point-to-point profile types and other services such as Remote Access Dial-in User Service (RADIUS) and Dynamic Host Configuration Protocol (DHCP) client configuration. Operations Console requires Windows NT users to have Remote Access Service.

 remote agent

In OSI, an agent process on a remote node. See also local agent.

 remote agent site

An agent site that is located on the same computer as the control server. A remote agent site requires the installation of IBM DB2 Warehouse Manager Standard Edition. See also agent site, default agent site.

 remote alarm indication (RAI)

A remote alarm (also referred to as a yellow alarm) indicates that the far end of a T1 connection has lost frame synchronization. The Send RAI system parameter can be set to prevent DirectTalk from sending an RAI

 remote application entity

In OSI, an application entity on a remote node.

 remote application process

In OSI, an application process on a remote node. See also local application process.

 remote authentication

The process of validating the user ID and password that are supplied by a user for a remote system to which the user requires access. If the user is authenticated, the user is mapped to a principal. See also local authentication.

 remote bridging

The function of a bridge that allows two bridges to connect multiple LANs using a telecommunication link.

 remote bus adapter

A bus adapter in an expansion unit. Optical cables from the local optical link cards in the system plug into this card.

 remote catchup state

In high availability disaster recovery, the state of the standby database after it reads all of the existing local log files. The database remains in this state until it establishes a connection with the primary database. See also peer state.

 remote change management server (RCMS)

In retail communications and Point-of-Sale Utility, a store controller program communicating over an SNA/SDLC network that connects a host processor and a store controller. RCMS allows the NetView Distribution Manager program to access point-of-sale controller files. It also provides error reporting and recovery for failures and data format conversion for files.

 remote console

(1) A display device that qualifies as a system console but is not directly attached to a system. See also local console.

(2) An Operations Console configuration that allows a personal computer to dial into a local console to gain console access to the system. See also Operations Console.

 remote context block (rCxt block)

An interprocess communication buffer used by the low-level application programming interface (LAPI) for Remote Direct Memory Access (RDMA).

 remote controller

A device or system, attached to a communications line, that controls the operation of one or more remote devices. See also local controller.

 remote control panel

A graphical interface that is provided by Operations Console that allows control panel operations to be performed from a remote location. This interface allows personal computer access to the control panel that controls operating or servicing the system.

 Remote Control proxy

A component that enables many machines on one side of a firewall to communicate, through a common port, to many machines on the other side of the firewall.

 remote copy

(1) A storage-based disaster-recovery and workload-migration function that can copy data in real time to a remote location. See also extended remote copy, Peer-to-Peer Remote Copy.

(2) A copy service that enables host data on a particular source virtual disk (VDisk) to be copied to the target VDisk designated in the relationship.

 remote database

(1) A database to which a connection is made by using a database link, while connected to a local database. See also local database.

(2) A shared database that is accessed by a program running on a different computer. The shared database is considered remote with respect to the program accessing it.

 remote destination

In an MSC network, a destination that resides in a remote system. See also local destination.

 remote device

A device that is attached to a processor using a communication line. See also local device.

 Remote Direct Memory Access (RDMA)

A communication technique in which data is transmitted from the memory of one computer to that of another without passing through a processor. RDMA accommodates increased network speeds.

 remote directory access

In OSI, the process of accessing directory information that resides on a remote open system.

 remote directory service

In OSI, the service that enables a system to obtain directory service from another system. In OSI Communications Subsystem, remote directory service requires the availability of a directory system agent (DSA) from which a directory user agent can obtain directory services using the X.500 directory access protocol (DAP).

 remote directory system agent

In OSI, an application process on a remote node that provides directory service.

 remote DL/I

A special case of function shipping, in which CICS sends a DL/I request to another CICS system.

 remote equipment

The modem and controller that provides the communications connection between a communications line and a remote device or system. This remote equipment is at the other end of a data link from the host system.

 Remote Execution and Access (RXA)

A type of service access point used to communicate with the Tivoli common agent and target endpoints.

 Remote Execution Protocol (REXEC)

A protocol that allows the execution of a command or program on any host in the network. The local host receives the results of the command execution.

 remote extension (RE)

An E1 signaling protocol similar to FXS loop start.

 remote fabric

Pertinent to remote copy and Peer-to-Peer Remote Copy, the storage area network (SAN) components (switches and cables) that connect the components (nodes, hosts and switches) of the remote cluster.

 remote federator

In an enterprise search application, a server object created by the search and index APIs that enables users to search a set of heterogeneous collections and obtain a unified set of search results.

 remote file system

A file system residing on a separate server or operating system.

 remote file transfer instance

A file that contains information about the method used for remotely transferring a file.

 remote hardware control

Management server control of cluster node hardware.

 remote home interface

In enterprise beans, an interface that specifies the methods used by remote clients for locating, creating, and removing instances of enterprise bean classes. See also local home interface.

 remote host

Any host on a network except the host at which a particular operator is working.

 remote input/output (RIO)

A type of hardware architecture that facilitates faster input/output connection speeds between a system and expansion units.

 remote interface

In EJB programming, an interface that defines the business methods that can be called by a client. See also home interface.

 remote I/O enclosure

An IBM Director managed object that represents an expansion enclosure of Peripheral Component Interconnect-X (PCI-X) slots, for example, an RXE-100 Remote Expansion Enclosure. The enclosure consists of one or two expansion kits.

 remote job entry (RJE)

The submission of a job through an input unit that has access to a computer by means of a data link.

 remote job processing (RJP)

A facility that permits the input, processing, and output of jobs to and from terminals remote from the installation.

 remote journal network

An i5/OS environment that includes a primary system source journal and target system journals. The target system journals, associated by using the remote journal function, are downstream from the primary system source journal.

 remote location name

Any other system with which a user's system can communicate in a network. This corresponds to the remote location name specified in the communications configuration. Equivalent to an SNA remote logical unit name. See also local location name.

 remote logical terminal

An IMS queue associated with an MSC logical link to allow routing of asynchronous output messages to the local LTERM in another IMS. See also logical terminal.

 remote manager

In OSI, a managing process on a remote node. See also local manager.

 remote MAS

A managed application system (MAS) that uses MRO or LU 6.2 to communicate with the CICSPlex SM address space (CMAS) that controls it. A remote MAS may or may not reside in the same MVS image as the CMAS that controls it.

 remote method

A business method in the remote interface that is callable by a client. See also Remote Method Invocation.

 Remote Method Invocation (RMI)

A protocol that is used to communicate method invocations over a network. Java Remote Method Invocation is a distributed object model in which the methods of remote objects written in the Java programming language can be invoked from other Java virtual machines, possibly on different hosts. See also remote method.

 Remote Method Invocation over Internet InterORB Protocol (RMI/IIOP)

Part of the Java Platform, Standard Edition (Java SE) model that developers can use to program in the Java language to work with RMI interfaces, but use IIOP as the underlying transport.

 remote mirror and copy

A feature of a storage server that constantly updates a secondary copy of a logical volume to match changes made to a primary logical volume. The primary and secondary volumes can be on the same storage server or on separate storage servers. See also global mirror.

 remote mode (RPC)

(1) A Java Client Application using a Gateway network protocol to connect to the Gateway daemon. See also local mode.

(2) A J2EE resource adapter that has been configured with a ConnectionURL starting tcp://, http://, or ssl://. Such resource adapters communicate with the Gateway daemon.

 remote name server

(1) In TCP/IP, the function that allows a system to get an internet address from a remote site rather than from its own host table.

(2) A name server that exists outside a local network.

 remote network address

In OSI, a network address that identifies a remote node.

 remote node

In OSI, any node other than the local node. See also local node.

 remote NSAP

In OSI, a service access point in the network layer of a remote node.

 Remote OSE

The use of the Open Servlet Engine (OSE) protocol as a transport mechanism to communicate between two separate machines in the WebSphere Application Server environment.

 remote presentation address

In OSI, a presentation address of an application entity on a remote node. See also local presentation address.

 remote primary Domino directory

In a central directory architecture, a primary Domino Directory that a server with a Configuration Directory uses remotely.

 remote printer queue

The name of a printer queue on a remote system. For a remote system running i5/OS, this is the name of an output queue on the remote system.

 Remote Procedure Call (RPC)

A protocol that allows a program on a client computer to run a program on a server.

 Remote Procedure Call runtime library (RPC runtime library)

In the Distributed Computing Environment (DCE) remote procedure call (RPC), a group of routines that enables local programs to execute procedures on remote hosts.

 remote project

A project that resides in an environment other than the development environment.

 remote queue

A queue that belongs to a remote queue manager. Programs can put messages on remote queues, but they cannot get messages from remote queues. See also local queue.

 remote queue manager

To a program, a queue manager that is not the one to which the program is connected. See also local queue manager.

 remote queue object

A WebSphere MQ object belonging to a local queue manager. This object defines the attributes of a queue that is owned by another queue manager. In addition, it is used for queue-manager aliasing and reply-to-queue aliasing.

 remote queuing

In message queuing, the provision of services to enable applications to put messages on queues belonging to other queue managers.

 remote resource

In CICS intercommunication, a resource that is owned by a remote system. See also local resource.

 remote service requester

In OSI, a service requester process on a remote node. See also local service requester.

 remote shell (rsh)

In the distributed shell (dsh) program, the shell in which the remote command will run.

 remote site

In an RSR environment, the physically remote location of the tracking IMS and shadows databases. If a remote takeover occurs, it becomes the active site.

 Remote Site Recovery (RSR)

A feature of IMS that minimizes the impact of active site failures by having a geographically remote IMS track active IMSs. Production work is taken over at the remote site in the event of a disaster or site-wide failure at the active site. See also tracker.

 Remote Spooling Communications Subsystem (RSCS)

An IBM licensed program that transfers spool files, commands, and messages between VM users, remote stations, and remote and local batch systems through HASP-compatible telecommunication facilities.

 remote subsystem

Any relational database management system (RDBMS), except the local subsystem, with which the user or application can communicate. The subsystem need not be remote in any physical sense and might even operate on the same processor under the same z/OS system.

 Remote Supervisor Adapter (RSA)

An IBM service processor that is built into some System x servers and available as an optional adapter for use with others. When used as a gateway service processor, the RSA can communicate with all service processors on the Advanced System Management (ASM) interconnect.

 Remote Switch

A feature that runs on the Fabric Operating System (OS) and enables two fabric switches to be connected over an asynchronous transfer mode (ATM) connection. Remote Switch requires a compatible fibre-channel-to-ATM gateway. The distance between each switch and the respective ATM gateway can be up to 10 km (6.214 mi).

 remote system

Any other system in the network with which a system can communicate. See also local system.

 Remote System Explorer (RSE)

The workbench perspective for accessing and editing files, as well as developing applications, on any supported remote server, such as a System i or Linux server. For example, System i users can create a connection to a remote host and navigate System i objects.

 remote takeover

In an RSR environment, an action initiated by an IMS operator to transfer the active IMS workload from the active site to the remote site. See also planned remote takeover, unplanned remote takeover.

 Remote Technical Assistance and Information Network (RETAIN)

Database used by IBM Support Centers to record all known problems with IBM licensed programs. See also heartbeat, catcher telephone number.

 remote terminal

(1) A terminal attached to a system through a data link.

(2) A terminal that is not attached to the host system through an I/O channel.

 remote terminal access method (RTAM)

A facility that controls operations between the job entry subsystem and remote terminals.

 remote terminal processor (RTP)

A programmable remote workstation.

 remote transaction

In a multisystem environment, a transaction whose total processing is shared between two or more systems. See also local transaction, local transaction.

 remote unit of work (RUOW)

(1) A unit of work that allows for the remote preparation and execution of SQL statements.

(2) The form of SQL distributed processing in which the application is on a system different from the relational database, and a single application server services all remote unit-of-work requests within a single logical unit of work.

(3) A unit of work that lets a user or an application program read or update data at one location per unit of work. RUOW supports access to one database within a unit of work. An application program can update several remote databases, but it can access only one database within a unit of work. See also transaction.

 remote workstation

A workstation that is connected to the system by data communications. See also local workstation.

 remote writer

A system program that sends spooled files from an output queue to a remote system.

 removable media

Volumes that can be removed from the hardware devices (such as tape cartridges and optical disks) where they are read and written.

 removable media library

A mechanism for storing multiple units of removable media that can be individually selected and inserted into drives that are installed within the library for reading and writing.

 remove method

In enterprise beans, a method defined in the home interface and invoked by a client to destroy an enterprise bean.

 render

To take data that is not typically image-oriented and depict or display it as an image. In Content Manager, word-processing documents can be rendered as images for display purposes.

 renewable ticket

A ticket that contains two expiration times: one that applies to the current instance of the ticket, and one that applies to the latest permissible expiration of the ticket. Renewable tickets are valid for an extended period of time while lessening the changes for theft.

 reoptimization

The process of reconsidering, at run time, the access path of an SQL statement that has already been optimized. During reoptimization, the actual values of host variables, parameter markers, and special registers might be considered in choosing the access path.

 reordered row format

A row format that facilitates improved performance in retrieval of rows that have varying-length columns. DB2 rearranges the column order, as defined in the CREATE TABLE statement, so that the fixed-length columns are stored at the beginning of the row and the varying-length columns are stored at the end of the row. See also basic row format.

 REORG pending (REORP)

A condition that restricts SQL access and most utility access to an object that must be reorganized.

 REORG-recommended operation

An operation that changes the format of the data that is written to permanent storage for a table and restricts the operations that are allowed on the table until the data in the table is reorganized.

 REORP

See REORG pending.

 repeatable

A type of read integrity in which a program is permitted to issue multiple read-only requests, with repeatable read integrity, and be assured that none of the records passed can subsequently be changed until the end of the sequence of repeatable read requests. The sequence of repeatable read requests ends either when the transaction terminates, or when it takes a syncpoint, whichever is the earlier. See also read integrity, consistent.

 repeatable read (RR)

An isolation level that prevents any row that is read from being changed by other applications until the transaction is completed. For WITH HOLD cursors, this applies to when the rows were actually read. For read-only WITH HOLD cursors, the rows might have actually been read in a prior transaction. RR also prevents any row changed by other applications from being read until the change is committed. A transaction that issues the same query more than once is guaranteed to read exactly the same rows again, disallowing phantom rows from being injected into the result set. See also cursor stability, read stability, uncommitted read, isolation level.

 repeatable sequence

A field or a group of fields that is contained more than once in a message. For example, if the SWIFT fields 20, 32, and 72 form a sequence, and if this sequence can be repeated in a message, each sequence of the fields 20, 32, and 72 would be an occurrence of the repeatable sequence. An occurrence can be referred to by a number. A repeatable sequence may contain another repeatable sequence.

 repeater

(1) A device that regenerates signals in order to extend the range of transmission between data stations or to interconnect two branches.

(2) In a Tivoli environment, a managed node that receives a single copy of data and distributes it to the next tier of clients.

 repeater range

The Tivoli clients that receive data from a repeater site.

 repeating data element

An EDI data element or EDI composite data element that occurs more than once consecutively in an EDI segment.

 repeating group

A group of parameters that can occur more than once to specify different values. See also normalization.

 repeat to address (RA)

An order to position data in the buffer of a 3270 terminal, thereby controlling the position of the data on the screen. An RA order is followed by a 2-byte buffer address, and a one-byte character to be repeated. The order copies the one-byte character repeatedly into the buffer until the 2-byte address is reached.

 repertoire

Configuration information that contains the details necessary for building a Secure Sockets Layer (SSL) connection.

 repetitive DO loop

In REXX, any instruction that has either a repetitor phrase or a conditional phrase (or both). The instruction list within the instruction is run zero or more times, controlled by any repetitor phrase that is optionally changed by a conditional phrase.

 replay

To apply the contents of a database log to a standby database, such as during a recovery operation.

 replay detection mechanism

A method that allows a principal to detect whether a request is a valid request from a source that can be trusted or whether an untrustworthy entity has captured information from a previous exchange and is replaying the information exchange to gain access to the principal.

 replay protection

A security service that ensures that an attacker cannot intercept message packets and retransmit them.

 replica

(1) In the Lightweight Directory Access Protocol (LDAP), a read-only server that contains the same data as another server. Replicas are used to back up LDAP servers and to provide faster searches by splitting requests among the main server and replica servers.

(2) A server that contains a copy of the directory or directories of another server. Replicas back up servers in order to enhance performance or response times and to ensure data integrity.

(3) A special copy of a Notes database that, because it shares a replica ID with the original database, can exchange information with it through replication.

(4) An instance of a versioned object base (VOB) located at a particular site.

 replica ID

A unique number that is generated when a Notes database is first created. The replica ID is stored in the database header and never changes. When you make a replica of the database, the replica inherits the replica ID. For two databases to replicate, they must share the same replica ID.

 replica table

In SQL replication, specifically in update-anywhere replication, a type of target table that can be updated locally and also receives updates from the master table through a subscription-set definition. If replication conflict detection is enabled, changes made to the replica table are rejected, whereas changes made to the master table are retained. See also conflict detection, master table, update-anywhere replication.

 replicate

In a remote journal network, to make a duplicate copy of a journal entry from a source journal to a target journal.

 replicated subtree

A portion of the directory information tree that is replicated from one server to another. Under this design, a given subtree can be replicated to some servers and not to others. Subtrees can be writable on a given server, or read-only.

 replicate node

A complete copy of a cluster resource that is kept up to date through replication. A node that is designated a replicate node cannot become a backup node or a primary node.

 replication

(1) The process of maintaining a defined set of data in more than one location. Replication involves copying designated changes for one location (a source) to another (a target) and synchronizing the data in both locations.

(2) The process of copying objects from one node in a cluster to one or more other nodes in the cluster, which makes the objects on all the systems identical.

(3) The process of exchanging modifications between replicas. Through replication, Notes makes all of the replicas essentially identical over time.

 replication administrator

In SQL replication and in Q replication, the user who is responsible for registering replication sources and creating subscription sets. This user can also run the Capture program and the Apply program.

 replication agreement

Information contained in the directory that defines the connection or replication path between two servers. One server is called the supplier (the one that sends the changes) and the other is the consumer (the one that receives the changes). The agreement contains all the information needed for making a connection from the supplier to the consumer and scheduling replication

 Replication Alert Monitor

A program that checks the operation of the Capture, Apply, Q Capture, and Q Apply programs and sends alerts to one or more users when it detects the specified alert conditions.

 Replication Analyzer

A program that can analyze a replication environment for setup problems, configuration errors, and performance issues.

 Replication Center

A graphical interface that lets users define, operate, maintain, and monitor the replication environment.

 replication conflict

A condition that occurs when two or more users edit the same document in different replicas of a Notes database between replications.

 replication control table

A table in which replication definitions or control information is stored.

 replication entry

A runtime component that handles the transfer of internal WebSphere Application Server data.

 replication monitor

A document created in the Statistics and Events database that causes the Event task on a server to monitor a specific database to make sure that it is replicating.

 replication queue map

In Q replication, an object that links a send queue and a receive queue. The replication queue map includes settings for how a Q Capture program processes all transactions that use the send queue and how a Q Apply program processes all transactions that use the receive queue. See also publishing queue map, queue map.

 replication source

(1) In SQL replication, a table, view, or nickname that is registered as a source for replication. Changes that are made to this table, view, or nickname are captured and copied to a target table that is defined in a subscription-set member. See also replication subscription, subscription-set member.

(2) In Q replication, a table that is a source for replication. Changes made to this type of table are captured and copied to a target table that is defined in a Q subscription or an XML publication. See also Q subscription, XML publication.

 replication subscription

See subscription set.

 replication target

In Q replication and in SQL replication, a table or procedure that is a destination for changes that were replicated from a source. The Q Apply program applies these changes. See also target table.

 replicator

The part of the workspace where Notes displays all replica databases and lets users manage the replication process.

 reply

See response.

 reply message

A type of message used for replies to request messages. See also report message, request message.

 reply-to address

A string of data that represents the address to be replied to. The contents and format of the string are not defined by the mail server framework. The address type associated with the reply-to address is assumed to define the contents of the reply-to address field.

 reply-to queue

The name of a queue to which the program that issued an MQPUT call wants a reply message or report message sent.

 report

(1) In query management, the formatted data that results from running a query and applying a form to it.

(2) A formatted presentation of information relating to a model or to process simulation results. Reports can be viewed online, printed, or exported to a variety of file formats.

(3) Data that has been selected and extracted according to the reporting tool, the type of report desired. and formatting criteria.

(4) An executable object that is created from a report template to produce report results.

 report break

In Query, a blank line or new page that appears in a report when the contents of a specified field in the report change. A report break can contain column summaries.

 report container

A group of settings that define the overall presentation of a report, including page dimensions and orientation, margin sizes, and options for displaying title, author, and summary information.

 report context

The basis for a displayed report. The context changes depending on which function you are using in the WebSphere Commerce Accelerator. Available report contexts include campaigns, initiatives, and a combined context.

 reporting application

A program that gathers information about the customers and sales transactions of a business.

 Reporting Grid Services (ReGS)

A set of core Open Grid Services Architecture (OGSA) services for logging, tracing, and monitoring applications in OGSA-based grid environments. It provides OGSA style logging interfaces for use by other grid services and applications and it can virtualize existing logging systems See also Open Grid Services Architecture.

 reporting node

In OSI, a node that reports a message to a manager node.

 reporting tool

A program that selects and extracts data according to a specified report type and formatting criteria.

 report interface (RPI)

In Tivoli Enterprise Data Warehouse Version 1.1, the component that provides historical reporting capabilities. Using the report interface, users can create and run reports; create and manage data marts that have the format required by the Tivoli Enterprise Data Warehouse report-generating tools; and create and manage the groups that control access to those data marts. See also report server.

 report layout utility (RLU)

A function of the Application Development ToolSet feature that is used to create, change, and save report prototypes.

 report line

In RLU, a record that is part of a report prototype for which the user creates data description specifications (DDS).

 report message

A type of message that gives information about another message. A report message can indicate that a message has been delivered, has arrived at its destination, has expired, or could not be processed for some reason. See also reply message, request message.

 Report Program Generator (RPG)

A programming language designed for writing application programs for business data processing requirements. The application programs range from report writing and inquiry programs to applications such as payroll, order entry, and production planning.

 report prototype

In RLU, a representation of the image of a report that a user builds on a display and the printed report image, both of which look like the actual listing created by an application program. The report prototype, when saved as a DDS source member, can be used to create a printer file, which, in turn, can be used by an application program to create a report.

 report result

The output of a report that is run. Report results contain information that is specified by the parameters that are set in the report. Report results can be produced in different formats, including PDF, HTML, and XML.

 report server

In Tivoli Enterprise Data Warehouse, Version 1.1, the system where the report interface component is installed. more data sources and one or more target warehouses. Warehouse agents use Open Database Connectivity See also report interface.

 report template

A template that is used to create reports. Parameters in the report template are specified when the report is created or run.

 report type

A data source and how it is mapped.

 repositioning

A process in which PSF, following an indication from the printer of a potentially recoverable error, locates the proper spool record for recomposing one or more pages for printing.

 repository

(1) A persistent storage area for data and other application resources.

(2) A collection of information about the queue managers that are members of a cluster. This information includes queue manager names, their locations, their channels, what queues they host, and so on.

(3) A VSAM data set on which the states of BTS processes are stored. When a process is not executing under the control of BTS, its state (and the states of its constituent activities) are preserved by being written to a repository data set. The states of all processes of a particular process-type (and of their activity instances) are stored on the same repository data set. Records for multiple process-types can be written to the same repository.

(4) A persistent storage area where packages are available for download.

 repository administrator

A person who configures and tests repository functions such as database connections, email subscriptions, index timers, and custom user information. The repository administrator is responsible for configuring the Service Oriented Architecture (SOA) product integrations; and creating team spaces, asset types, category schemas, and asset relationships.

 repository queue manager

A queue manager that hosts the full repository of information about a cluster.

 repository table

One of three types of database tables in the InterChange Server repository, the repository tables store information about the collaborations, business objects, connectors, maps, and relationships that you can configure in the WebSphere business integration system. The other two types of database tables in the repository are the event management tables and the transaction tables.

 repository utility

A CICS-supplied utility program, DFHBARUP, that enables you to print selected records from a specified BTS repository data set.

 Representational State Transfer (REST)

A software architectural style for distributed hypermedia systems like the World Wide Web. The term is also often used to describe any simple interface that uses XML (or YAML, JSON, plain text) over HTTP without an additional messaging layer such as SOAP.

 REQ/ACK

See request for acknowledgment and acknowledgment.

 REQMS

See request for maintenance statistics.

 request

(1) In OSI, a service primitive issued by a service user to call a function supported by the service provider.

(2) The part of a Web address that follows the protocol and server host name. For example, in the address http://www.server.com/rfoul/sched.htm, the request is /rfoul/sched.html.

(3) In a request/response interaction, the role performed by a business object that instructs a connector to interact with an application or other programmatic entity.

(4) An item that initiates a workflow and the various activities of a workflow.

 request business object

A business object sent as a request by a collaboration to a connector. Requests specify an action such as retrieving, updating, creating, or deleting data. When a request business object is a child of a wrapper business object, the WebSphere business integration system uses it to facilitate exchange of data to and from a URL. In this case, this business object contains collaboration request data passed to a URL by the appropriate protocol handler and data handler. See also wrapper business object.

 request commit

The vote that is submitted to the prepare phase if the participant has modified data and is prepared to commit or roll back.

 request consumer binding

A definition of the security requests for the request message that is received by a Web service.

 requested reset statistics

(1) Requested reset statistics differ from requested statistics in that the statistics counters are reset to zero. See also interval statistics, requested statistics, unsolicited statistics.

(2) In CICS Transaction Server, CICS statistics that the user has asked for by using the appropriate EXEC CICS or CEMT commands, which cause the statistics to be written to the SMF data set immediately.

 requested statistics

CICS statistics that the user has asked for by using the appropriate command or transaction, which causes statistics to be written immediately, instead of waiting for the current interval to expire. The request does not reset the statistics. See also interval statistics, requested reset statistics, unsolicited statistics.

 requester

(1) A workstation from which a user can log on to a domain and use network resources.

(2) In System i Access, a program that requests services from another program (a server). Each System i Access function has a server and a requester.

(3) The source of a request to access data at a remote server.

 requester channel

In message queuing, a channel that can be started locally to initiate operation of a server channel. See also server channel.

 request flow

The flow of the outgoing message from the source to the targets or back to the source.

 request for acknowledgment and acknowledgment (REQ/ACK)

A cycle of communication between two data-transport devices for the purpose of verifying the connection, which starts with a request for acknowledgment from one of the devices and ends with an acknowledgment from the second device. The REQ and ACK signals help to provide uniform timing to support synchronous data transfer between an initiator and a target. The objective of a synchronous data-transfer method is to minimize the effect of device and cable delays.

 request for change (RFC)

A formal proposal for a change to any component of the information technology infrastructure or any aspect of an information technology service.

 Request for Comments (RFC)

In Internet communication, one of a series of numbered documents that describe Internet communication protocols.

 request for information (RFI)

A workflow activity that requests additional information from the specified participant.

 request for maintenance statistics (REQMS)

A host solicitation to an SNA controller for a statistical data record.

 request for price quotation (RPQ)

A customer request for a price quotation on alterations or additions to the functional capabilities of a hardware product for a computing system or a device. See also programming request for price quotation.

 request for proposal (RFP)

A formal invitation containing a scope of work which seeks a formal response (proposal) describing both methodology and compensation to form the basis of a contract.

 request for quote (RFQ)

(1) The trading mechanism used when a buyer solicits quotes for a specific set of goods or services. It can be used if a buyer does not find a particular item in the catalog, finds an item without a price, or wants to establish a long-term supply arrangement for a fixed-price item.

(2) A formal invitation to submit a price for goods and/or services as specified.

 request functional transmission

In multileaving telecommunications access method (MTAM), a control character indicating a request for permission to send data. See also grant functional transmission.

 request generator binding

A definition of the security requests for the request message that is sent to a Web service.

 request header (RH)

(1) In SNA, the control information that precedes a request unit.

(2) In SNA, a 3-byte header that precedes a request unit. The request header specifies the type of request unit and contains control information associated with that request unit. See also response header.

 requesting region

The region in which a dynamic routing request originates. For dynamic transaction routing and inbound client dynamic program link requests, this is typically a TOR; for dynamic START requests and peer-to-peer dynamic program link requests, this is typically an AOR. To be eligible for dynamic routing, the process or activity must be started by an EXEC CICS RUN ASYNCHRONOUS command. See also routing region, target region.

 request message

A type of message used to request a reply from another program. See also reply message, report message.

 request metrics

A mechanism to monitor and troubleshoot performance bottlenecks in the system at an individual request level.

 request microphone mode

A Sametime audio mode in which a user must request the microphone (by clicking a button) before speaking.

 request parameter list (RPL)

In VTAM, a control block that contains the parameters necessary for processing a request for data transfer, for establishing or terminating a session, or for some other operation.

 request queue

The queue in which a service request is stored. It resides in main storage and consists of a set of request queue elements that are chained in the following different queues: requests waiting to be processed, requests currently being processed, and requests for which processing has finished.

 request queue handler (RQH)

A MERVA ESA component that handles the queueing and scheduling of service requests. It controls the request processing of a nucleus server according to rules defined in the finite state machine.

 request rate

The rate at which requests arrive at a servicing entity. See also service rate.

 request receiver binding

A definition of the security requirements for the request message that is received from a request to a Web service.

 request/reply

A type of messaging application in which a request message is used to request a reply from another application.

 request/response interaction

The type of interaction used by collaborations to move data into or extract data from connectors and the applications or processes with which the connectors interact. The collaboration sends a request in the form of a business object and the connector responds with either data in the form of a business object or a notification of success or failure.

 request/response unit (RU)

A generic term for a request unit or a response unit.

 request sender binding

A definition of the security requirements for the request message that is sent to a Web service.

 request to send (RTS)

In data communication, a signal raised by data terminal equipment (DTE), while the data terminal is ready, to request facilities from data circuit-terminating equipment (DCE) so that data can be sent.

 request unit (RU)

In SNA, a message unit that contains data, control information, or both (for example, data and indicators).

 required hyphen

A hyphen that is not removed when the program adjusts lines. See also syllable hyphen.

 required parameter

A parameter having no automatically supplied value; the user must provide a value.

 requirement

A condition or capability that a system must provide. This condition is either derived direction from user needs or stated in a contract, standard, specification, or other document.

 requirement attribute

Information associated with a requirement providing a link between the requirement and other project elements for example, priorities, schedules, status, design elements, resources, costs, hazards.

 requirement attribute label

See attribute label.

 requirement Attribute Matrix

See Attribute Matrix.

 requirement attribute type

See attribute type.

 requirement attribute value

See attribute value.

 requirement location

The location where a requirement was created or the location to which it was last moved. The location can be either a specific requirements document or the project database.

 Requirement Metrics

A Rational RequisitePro feature that compiles statistics on requirement name, text, attributes, relationships, and revisions.

 requirements component system

In the Reusable Asset Specification (RAS), a kind of component system that provides a set of requirements that specifies a component system asset.

 requirements document

A document that captures requirements and is used to communicate product development efforts. Each requirements document addresses a particular requirement type, such as product features, use cases, and supplementary specifications.

 requirements framework

In the Reusable Asset Specification (RAS), a kind of framework that provides a set of requirements that specifies a framework asset.

 requirements management (RM)

A systematic approach to eliciting, organizing and documenting the software requirements of the system, and establishing and maintaining agreement between the customer and the project team on changes to those requirements.

 requirements text

The full textual content of a requirement. In a document, it may include embedded and linked objects, such as graphics, tables, and Microsoft Word files.

 requirements tracing

The linking of a requirement to other requirements and to other artifacts and their associated project elements.

 requirement tag

The unique identifier of each requirement in a project. A requirement tag is composed of a tag prefix and a unique numerical value, such as "PR100.1.2." The tag prefix is always the requirement type, as defined in the Project Properties dialog box. The numerical value is generated by RequisitePro. See also pending tag number.

 requirement tag prefix

The part of a requirement tag that identifies the requirement type.

 requirement text

The full textual content of a requirement. In a document, it may include embedded and linked objects, such as graphics, tables, and Microsoft Word files.

 requirement type

(1) A set of descriptive and operational information associated with a requirement when the requirement is created. A requirement type serves as an outline for all requirements of the same type and is useful for classifying and grouping similar requirements in a project. Each requirement type has its own set of user-defined attributes.

(2) A categorization of requirements based on common characteristics and attributes. Sometime requirement types are based on the requirement source or area of effect for example, stakeholder need, feature, use case, supplementary requirement, documentation requirement, hardware requirement, software requirement, and so on. Requirements may also be categorized based on the dimension of software quality that they represent for example, FURPS+.

 requirement version

A requirement attribute that shows the version of the requirement.

 requisite

A software product or a service update that must be installed with another software product or service update. If you attempt to install software products or service updates without the required requisite software, a system message displays the names of required requisite software. See also corequisite, exrequisite.

 RequisiteWeb

Rational's Web interface that allows clients to access RequisitePro requirements information across an intranet. RequisiteWeb provides a thin client solution to access project documents and data in a Web browser. No Requisite application-specific files need to be installed on individual machines.

 rescale

To change graph dimensions to better fit the data points and values in a graphical interface.

 reseller

In WebSphere Commerce, in the context of the demand chain business model, a business that sells products to businesses (such as end users or other resellers), after having obtained the goods from manufacturers, distributors, or other resellers. A reseller can provide its own value-add services of modifications to the product, and can also choose to package or bundle products differently from its suppliers.

 reservation

In QoS, part of a resource that has been dedicated for the use of a particular traffic type for a period of time through the application of policies.

 ReSerVation Protocol (RSVP)

A resource reservation setup protocol designed for an integrated services Internet. The protocol provides receiver-initiated setup of resource reservations for multicast and unicast data flows.

 reserved allegiance

In mainframe computing, a relationship that is created in a control unit between a device and a channel path when the device completes a Sense Reserve command. Reserved allegiance causes the control unit to guarantee access (a busy status is not presented) to the device. The device is accessed over the set of channel paths that are associated with the reserved allegiance. Access is for one or more channel programs until the reserved allegiance ends. See also contingent allegiance, implicit allegiance.

 reserved inventory

Inventory that has been designated for a particular purpose, and is not available to allocate to orders.

 reserved memory

The area of main storage between 640 KB and 1 MB on a personal computer. Reserved memory cannot be used by adapters and special programs, such as expanded memory support.

 reserved word

(1) A word that is defined by a programming language and that cannot be used as an identifier or changed by the user.

(2) A word that has been set aside for special use in the SQL standard.

 reset (RST)

(1) A state that indicates that the current logical unit of work (LUW) has not yet begun to prepare to commit. A failure during RST state results in a rollback of any pending changes.

(2) To cause a counter to take the state corresponding to a specified initial number.

 reset indication packet

In X.25 communications, a packet transmitted by the data circuit-terminating equipment (DCE) to inform the data terminal equipment (DTE) that a virtual call or a permanent virtual circuit is being reset and the reason for the resetting.

 residence mode

The attribute of a load module or program object that identifies where in virtual storage the program will reside.

 residency mode (RMODE)

In z/OS, a program attribute that refers to where a module is prepared to run. RMODE can be 24 or ANY. ANY refers to the fact that the module can be loaded either above or below the 16M line. RMODE 24 means the module expects to be loaded below the 16M line.

 resident module

A module that remains in a particular area of storage.

 resident queue (RESQUEUE)

A control block built in storage by the job segment scheduler (JSS) to represent a scheduler element during the life of the scheduler element.

 resident resource

A resource, such as a font, symbol set, page segment, or overlay, that resides in a printer or an intermediary device, such as a personal computer.

 resident routine

A library routine that is linked with an application. Resident routines include initialization routines and callable service stubs. See also transient routine.

 residual error

An error that is not detected by the network layer. Examples of residual errors are loss, corruption, duplication, and delivery out of sequence of TPDUs. See also signaled error.

 resilient application

A server program that can be restarted on a different node without requiring a user to reconfigure the clients.

 resilient resource

Data, a process, or an application that can be recovered if a node in a cluster fails.

 RESLEVEL

In WebSphere MQ for z/OS, an option that controls the number of CICS user IDs checked for API-resource security.

 resolution

A measure of the sharpness of an image, expressed as the number of lines per unit of length or the number of points per unit of area discernible in that image.

 resolution path

The set of queues that are opened when an application specifies an alias or a remote queue on input to an MQOPEN call.

 resolve

In programming, to change a predefined, symbolic value to the actual value of the item being processed. For example, a symbolic value of *LAST defined for the name of a file member is resolved to the name of the last member when the member is processed.

 resolved import

An import whose type and name exactly match the type and name of an export.

 resource

(1) The object of a lock or claim, which could be a table space, an index space, a data partition, an index partition, or a logical partition.

(2) Any physical item or logical item to be managed in an information system of an enterprise.

(3) Any facility of a computing system or operating system required by a job, task, or executing program. Resources include main storage, input/output devices, the processing unit, data sets, files, libraries, folders, and control or processing programs.

(4) The collective term for projects, folders, subfolders, and files that can be manipulated in the Eclipse workbench.

(5) A hardware, software, or data entity. See also managed resource.

(6) A Java class that defines the properties of the user or content object. In database terms, it is analogous to the database schema that defines the column names and types for a database table.

(7) An assignable entity required for completing or accessing an offering. Resources can be finite or depletable. See also finite resource, depletable resource.

(8) Any of several data structures included in a HATS project. HATS resources include templates, screen customizations, transformations, screen captures, connections, and macros. Other WebSphere Studio plug-ins sometimes call these "artifacts."

(9) A person, piece of equipment, or material that is used to perform a task or a project. Each resource is a particular occurrence or example of a resource definition.

(10) A collection of printing instructions used by Print Services Facility (PSF), in addition to the print data set, to produce the printed output.

(11) A person who can be assigned to work breakdown structure (WBS) elements.

(12) A discrete asset, for example: application suites, applications, business services, interfaces, endpoints, and business events.

(13) A logical or physical component of a subject domain, for example, an application server.

 Resource Access Control Facility (RACF)

An IBM licensed program that provides access control by identifying users to the system; verifying users of the system; authorizing access to protected resources; logging unauthorized attempts to enter the system; and logging accesses to protected resources.

 resource access security

The use of RACF security classes to protect resources (PSBs, transactions, and output LTERMs) from unauthorized use by a dependent region.

 resource adapter

A system-level software driver that is used by an EJB container or an application client to connect to an enterprise information system (EIS). A resource adapter plugs in to a container; the application components deployed on the container then use the client API (exposed by adapter) or tool-generated, high-level abstractions to access the underlying EIS. (Sun) See also container, enterprise information system.

 resource adapter archive (RAR)

A Java archive (JAR) file that is used to package a resource adapter for the Java 2 Connector (J2C) architecture.

 resource allocation

The part of plan allocation that deals specifically with database resources.

 resource allocation timeout value (R_A_TOV)

In fibre-channel technology, a value used to time out operations that depend on the maximum possible time that a frame can be delayed in a fabric and still be delivered. This value is adjustable in one microsecond increments from 10 - 120 seconds. See also resource recovery timeout value.

 resource associations part

In EGL, a build part that relates an EGL record with the information needed to access a file on a particular target platform. The information in this part is used at generation time, test time, and run time.

 resource bundle

A class that contains the text for the store pages. Bundle files are created and accessed according to the Java PropertyResourceBundle API.

 resource calendar

A calendar that is created when a resource is created or added to a project.

 resource class

(1) A category of similar resources that are defined in the RACF class descriptor table (CDT).

(2) A group of resources that have attributes, actions, and other characteristics in common.

(3) An attribute of a resource that is used to group resources according to the subsystem to which they belong and the purpose for which they are used.

 resource collection

A collection of resource instances that specifies the Java classes that are used to access the resources in the customer data store. A resource collection is similar to a database table (with a fixed schema and a number of rows).

 resource-constrained condition

The situation that occurs when the printer does not have enough storage for the resources required to print the current page.

 resource control table (RCT)

A DB2 control table that defines the relationship between CICS transactions and DB2 resources.

 resource definition

The set of attributes and access rights that define a specific resource type to the Security Service of Tivoli Kernel Services.

 resource definition data set (RDDS)

A data set that manages IMS resources. IMS systems have options to export resources that are defined by the system definition process and resources that have been created or updated dynamically, into the RDDS. These resources can then be imported from the RDDS into an IMS system during cold start processing or through the use of an IMPORT command.

 resource definition macro (RDM)

A method of defining resources to CICS by using assembler macros. You code and assemble special CICS macros and present the assembler output to CICS at system initialization. See also resource definition online.

 resource definition member

A member in the IMS.PROCLIB data set that defines the resource definition data set (RDDS) to IMS. See also resource definition data set.

 resource definition online (RDO)

(1) The method of defining most resources to CICS. See also resource definition macro.

(2) In CICS , a facility that allows the user to define certain CICS resources interactively while CICS is running. Specifically, RDO allows the user to define terminals, programs, and transactions interactively.

 resource definition table (RDT)

In VTAM, a table that describes the characteristics of each node available to VTAM and associates each node with a network address. This is the main VTAM network configuration table.

 Resource Description Framework (RDF)

A framework for representing information in the Web. RDF has an abstract syntax that reflects a graph-based data model, and formal semantics with the notion of entailment to provide for deductions.

 resource descriptor

A template in which the attributes for a resource are defined. You can then create a resource by using the resource descriptor to define the attributes for the resource.

 resource distribution report

A report, generated by the Customization Definition Program (CDP), that describes the resources required by the instance.

 resource element

A component of an Intelligent Network that contains specialized resources such as speech recognizers or text-to-speech converters.

 resource environment reference

A reference that maps a logical name used by the client application to the physical name of an object.

 resource error counters

In OSI, counters that keep track of errors that occur in layers and other resources.

 resource file

A file that is referred to from a Java program. Examples include graphics and audio files.

 resource group

(1) A group of resources that can include business objects such as contracts or a set of related commands. In access control policies, resource groups specify the resources to which the policy authorizes access.

(2) A collection of structured fields that describe the attributes of a resource such as a volume.

 resource group class

A type of RACF class in which each user or group of users that is permitted access to that resource group is permitted access to all members of the resource group. See also resource group profile, resource member class.

 resource group profile

A general resource profile in a resource group class. A resource group profile provides RACF protection for one or more resources with unlike names. See also resource group class.

 resource hierarchy

Categories or groups of users or content data that are specified by the user. Resource hierarchies are not supported in WebSphere Personalization.

 resource ID

The programmable list entry ID that IMS specifies for a resource to ensure name uniqueness. The first byte is the name type, and the remaining 11 bytes are the resource name, padded with blanks.

 resource instance

An instance of the resource class. A resource instance is similar to a row of a database in that it contains actual values for each property defined by the resource.

 Resource Interchange File Format (RIFF)

A file format used for storing sound or graphics for playback on different types of computer equipment.

 resource level

The hierarchical position of a device (and the software that is contained within it) in a data processing system. For example, a first-level resource could be the communication controller, and the second-level resource could be the line connected to it.

 resource limit facility (RLF)

A portion of DB2 code that prevents dynamic manipulative SQL statements from exceeding specified time limits. The resource limit facility is sometimes called the governor.

 resource limit specification table

A site-defined table that specifies the limits to be enforced by the resource limit facility.

 resource management

In CICS, a facility that tracks what system resources are being used. The tracking is done by mapping the CICS identification name to the underlying system resources.

 resource management utility (RMU)

In AFP Utilities, an interactive tool used to maintain AFP resources.

 resource manager (RM)

(1) The component of a Content Manager system that manages objects. These objects are referred to by items stored on the library server.

(2) An application, program, or transaction that manages and controls access to shared resources such as memory buffers and data sets. WebSphere MQ, CICS, and IMS are resource managers.

(3) See managed resource.

(4) A subsystem or component that manages resources that can be involved in transactions. Resource managers can be categorized as work managers, data resource managers, and communication resource managers.

(5) The participant in a transaction responsible for controlling access to recoverable resources. In terms of the CICS resource adapters this is presented by an instance of a ConnectionFactory.

(6) In the Tivoli common agent services , the server of a management application that directly interacts with a managed resource. For example, a resource manager installs bundles on the agent and starts and stops a subagent. See also management application.

(7) In an XA-enabled environment, software that manages and provides access to shared resources, such as databases. The DB2 database system is an example of a resource manager.

(8) A function that is responsible for managing a particular resource and that guarantees the consistency of all updates made to recoverable resources within a logical unit of work. The resource that is being managed can be physical (for example, disk or main storage) or logical (for example, a particular type of system service).

(9) A participant, in the execution of a two-phase commit, that has recoverable resources that could have been modified. The resource manager has access to a recovery log so that it can commit or roll back the effects of the logical unit of work to the recoverable resources.

(10) A stand-alone daemon that maps resource and resource class abstractions into calls and commands for one or more specific types of resources.

 Resource Manager (RM)

A CSL component that manages resources and coordinates online change for IMSs in an IMSplex.

 resource manager cache

The working storage area for the resource manager.

 resource manager interface (RMI)

A program or a group of programs that you write to enable you to structure calls from your CICS system in such a way that they can access non-CICS resources, such as databases, that you would not normally be able to access. See also task-related user exit.

 resource manager local transaction (RMLT)

A resource manager view of a local transaction that represents a unit of recovery on a single connection that is managed by the resource manager.

 Resource Measurement Facility (RMF)

A feature of z/OS that measures selected areas of system activity and presents the data collected in the format of printed reports, System Management Facility (SMF) records, or display reports.

 resource member class

A class to which a resource group class is related. See also resource group class.

 resource model

(1) The logical modeling of one or more resources on which cyclical data collection, data analysis, and monitoring are based. Related events and actions are triggered, if required. For any resource model, users can specify individual thresholds and event aggregation rules. See also event.

(2) A model that defines the resources used in business operations, including their roles, availability, and cost characteristics.

 resource model engine (RME)

An analysis engine that is used to identify, notify, and cure performance and availability problems. The RME analyzes performance data that is collected from physical resources and uses that data to identify a problem, then triggers corrective action to cure the discovered problem, and finally escalates problem notification to management tools. See also Autonomic Monitoring.

 resource-monitor threshold

The point at which a resource monitor generates an event.

 resource name

(1) A name assigned by the system to a line, controller, or device that is connected to the system.

(2) The name under which an AFP resource object is stored, the first 2 characters of which indicate the resource type.

(3) An 11-byte unique name of a client-defined resource. A transaction is an example of an IMS resource name.

 resource object

(1) In AFP, a collection of printing instructions, and sometimes data to be printed, that consists entirely of structured fields. A resource object is stored as a member (or file) of a library and can be called for by PSF when needed. The different resource objects are: coded font, font character set, code page, page segment, overlay, form definition, and page definition.

(2) The representation of an actual network resource, such as a service, file, and program.

 Resource Object Data Manager (RODM)

In Tivoli NetView for z/OS, a component that provides an in-memory cache for maintaining real-time data in an address space that is accessible by multiple applications.

 resource pool

(1) A collection of available servers (servers that are not allocated) that support one or more application tiers.

(2) A group of people who are available to work on a project.

 resource profile

A profile that provides RACF protection for one or more resources. The information in a resource profile can include the data set profile name, profile owner, universal access authority, access list, and other data. Resource profiles can be discrete profiles or generic profiles. User, group, and connect profiles are not resource profiles. See also discrete profile, generic profile.

 resource property

(1) A property for a JDBC data source in a server configuration, for example the server name, user ID, or password.

(2) A piece of information that is associated with a Web Services Resource (WS-Resource) that can reflect the state of a resource, the metadata, or the manageability interface information. See also Web Services Resource.

 resource protection

The system function of enqueueing on a resource to provide exclusive control of that resource to a transaction until the end of a logical unit of work.

 resource record (RR)

In a Domain Name System (DNS), a location where data is stored.

 Resource Recovery Services (RRS)

A component of z/OS that uses a sync point manager to coordinate changes among participating resource managers.

 resource recovery timeout value (RR_TOV)

In fibre channel networks, the minimum time a target device in a loop waits after a loop initialization primitive (LIP) before logging out a small computer system interface (SCSI) initiator. See also error detect timeout value, resource allocation timeout value.

 resource region

In CICS distributed program link, a CICS region to which an application region ships a LINK PROGRAM request.

 resource requirement

Prerequisites such as the amount of memory, the size of the hard disk and so on for virtual server templates.

 resource reservation

A request for an application or for extra servers that is scheduled for a specified period. Reservation requests are not guaranteed, but they influence deployment decisions.

 resource reservation setup protocol

An Internet protocol that is used for communicating application (end-to-end) quality-of-service requirements to intermediate transit nodes in a network. RSVP uses a soft-state mechanism to maintain path and reservation states in each node in the reservation path.

 resource role

In a Tivoli environment, an authorization role that provides access to specific resources in the local Tivoli region and any connected Tivoli region (for example, policy regions or the Administrator collection).

 resource security

(1) A security function of the operating system used to authorize users to any part of the system that is required by a job or task.

(2) In CICS/VSE, the facility provided by CICS for the control of access to resources protected by RSL security. The resources that can be protected include transactions, data sets, and transient data destinations. In CICS Transaction Server, the facility provided by CICS and RACF for the control of access to resources protected by RACF security classes. The resources that can be protected include transactions, data sets, and transient data destinations.

 resource set (RSet)

A data structure in AIX 5L used to represent physical resources such as processors and memory. AIX uses resource sets to restrict a set of processes to a subset of the system's physical resources.

 resource structure

A coupling facility list structure, used by the Common Service Layer's Resource Manager and managed by CQS, that contains uniquely named resources. This structure is typically used to maintain global resource information when multiple Resource Managers exist in an IMSplex.

 resource tables

Related types of resource information that are stored within CICS in tables or control blocks.

 resource takeover

In VTAM, an action initiated by a network operator to transfer control of resources from one domain to another without breaking the connections or disrupting existing LU-LU sessions on the connection.

 resource type

(1) In a Tivoli environment, one of the properties of a managed resource. Resource types are defined in the default policy for a policy region.

(2) A well-defined syntax and semantics that characterize all instances of a given kind of resource. See also managed resource prototype.

(3) A resource that is defined by CQS. CQS groups list headers into resource types. The resource types allow CQS and its clients to physically group resources of a particular type on a coupling facility list structure.

 responder

(1) In OSI Communications Subsystem, the application entity that accepts an application association. See also initiator.

(2) A key server that is asked to establish a dynamic virtual private network (VPN) connection between two endpoints.

(3) In distributed queuing, a program that replies to network connection requests from another system.

 response

(1) In OSI, a service primitive issued by a service user to complete the procedures associated with a confirmed service. See also command.

(2) In SDLC, a frame transmitted by a secondary station. Stations using asynchronous balanced mode send both commands and responses.

(3) In SNA, a message unit that acknowledges receipt of a request; a response consists of a response header (RH), a response unit (RU), or both.

(4) A message inserted to a logical terminal destination specified by an I/O PCB or an alternate response PCB. When VTAM is used, the term reply is substituted for response because response has a separate meaning in VTAM communications. See also primary request, secondary request.

(5) In speech recognition, the character string returned by the recognizer, through DVT_Client, to the state table. The string represents the outcome of a recognition attempt. This is the word or words that the recognizer considers to be the best match with the speech input.

(6) In a request/response interaction, a message from a connector to a collaboration that carries the results of a request made by the collaboration. The message can be either a business object or a response code.

 response alternate PCB

See alternate response PCB.

 response business object

A business object returned by a connector to a collaboration. This business object contains response data from the connector's application or data source. Responses include the results of processes such as retrieving, changing, creating, or deleting data. When a response business object is a child of a wrapper business object, the WebSphere business integration system uses it to facilitate exchange of data to and from a URL. In this case, this business object contains response data from a URL. It is passed by a synchronous protocol handler to the appropriate collaboration. See also wrapper business object.

 response document

In Notes, a document created using a Response form, a typical component of a discussion database. In a view, response documents are usually indented underneath the document to which they respond.

 response file

(1) A file containing predefined values that is used instead of someone having to enter those values one at a time. See also silent installation.

(2) An ASCII file that can be customized with the setup and configuration data that automates an installation. The setup and configuration data would have to be entered during an interactive install, but with a response file, the installation can proceed without any intervention.

 response file generator

A utility that creates a response file from an existing installed and configured DB2 product. The generated response file can be used to re-create the same setup on other computers.

 response flow

The flow of the returning message from the targets to the source.

 response generator binding

A definition of the security requests for the response message that is sent to a Web service.

 response header (RH)

In SNA, a header, optionally followed by a response unit, that indicates whether the response is positive or negative and that may contain a pacing response. See also request header.

 response indicator

A 1-character field passed with an input record from the system to a program to provide information about the data record or actions taken by the workstation user.

 response level

(1) The state of a monitor when a specified threshold is reached. See also event response.

(2) See severity level.

 response mode

A mode of terminal operation that synchronizes operations between the terminal operator and the application program. See also line response mode, terminal response mode, nonresponse mode.

 response package

A series of deliverables and tasks required to manage or mitigate the effects of an exception such as an issue, change request or risk.

 response receiver binding

A definition of the security requirements for the response message that is received from a request to a Web service.

 response sender binding

A definition of the security requirements for the response message that is sent to a Web service.

 response time

(1) In capacity planning, the elapsed time between the end of an inquiry or demand on a computer system and the beginning of the response. An example of response time is the length of time between an indication of the end of inquiry and the display of the first character of the response at a user's workstation.

(2) The elapsed time between entering an inquiry or request and receiving a response.

 response time monitor

A feature available with certain hardware devices to allow measurement of response times, which can be collected and displayed.

 response unit (RU)

(1) In SNA, the record sent to respond to a request. The response can be either positive or negative and can include control information.

(2) A message unit that acknowledges a request unit. It can contain prefix information received in a request unit.

 RESQUEUE

See resident queue.

 REST

See Representational State Transfer.

 restart

Resumption of operation after recovery. Ability to restart requires knowledge of where to start and ability to start at that point.

 restart data set (RDS, RSD)

(1) The direct-access data set used to contain the information necessary to restart IMS.

(2) A VSAM KSDS used only during a CICS emergency restart. The RSD temporarily holds the backout information read from the CICS system log. This allows CICS to be restored to a stable state and to be restarted following an abrupt termination.

 restart group

A group of related jobs, registered as elements of automatic restart management, that must be restarted together on the same system if a system fails unexpectedly.

 restart in place

In XRF, the restart of a failed active CICS system, instead of a takeover by the alternate CICS system.

 restart pending (RESTP)

A restrictive state of a page set or partition that indicates that restart (backout) work needs to be performed on the object.

 restore

(1) To copy data from compact disc, tape, diskette, optical disc, or a save file to auxiliary storage. See also save.

(2) To rebuild a damaged or corrupted database or table space from a backup image produced with the backup database utility.

(3) To copy information from its backup location to the active storage location for use. See also back up.

(4) To return to an original value or image, for example, to restore data to main storage from auxiliary storage.

 restore set

A backup copy of a database or table space plus zero or more log files that, when restored and rolled forward, bring the database or table space back to a consistent state.

 RESTP

See restart pending.

 rest page

A Web page that is displayed on a device and customized by a provider to display advertising and other information when the device is disconnected from the network.

 restricted IP option

An IP option, such as Loose Source and Record Route (LSRR), that is used to map a network's topology and discover private IP addresses. A hacker might try to use a restricted IP option to get through a firewall.

 restricted IP protocol

An undefined IP protocol that can be used to establish an attack on a network.

 restricted meeting

A Sametime meeting that is restricted during meeting creation to specific attendees. See also limited meeting.

 restricted place

A shared place that is open to only those individuals and groups whom the place creator (or place manager) adds to the place's membership list. The person who creates the place (and who automatically becomes the place manager) designates the place as a restricted place during place creation. See also public place.

 restricted shell

A facility that provides controlled, limited access to specified users.

 restricted state

The status in which a user places a system (by ending all subsystems) to do a specific function, such as saving storage, saving the system, or restoring user profiles. Other jobs cannot be active on the system while it is in a restricted state.

 restriping

Redistributing and rebalancing data across all available and defined disks in a multimedia file system. This is typically done when a disk is removed from a file system for repair or when a new disk is added to a file system.

 Restructured Extended Executor (REXX)

(1) A general-purpose, high-level, programming language, particularly suitable for EXEC procedures or programs for personal computing.

(2) The i5/OS implementation of the Systems Application Architecture Procedures Language. REXX is a programming language that is supported by an interpreter provided as part of the i5/OS licensed program.

 RESULT

A REXX special variable that is set by the RETURN instruction in a called routine. The RESULT special variable is dropped if the called routine does not return a value.

 result

(1) See edge.

(2) In a policy-enabled system, a solicited decision that contains one or more specific data values, called result values. See also result value.

 result column

The set of columns that DB2 for i5/OS SQL selects for an application program.

 result destination

In Query Patroller, the location where the results of a query are returned. The result destination can be either the application through which the query was submitted or a result table. See also result table.

 result field

In Query, a field that contains the results of calculations performed on numeric fields in a file.

 resulting indicator

In RPG, an indicator that signals the result of a calculation, such as whether the result is plus, minus, or zero; whether a given field is greater than, less than, or equal to another field; or whether an operation was successfully completed.

 result set

The set of rows that a procedure returns.

 result set locator

A value used by a DB2 application to uniquely identify a query result set returned by a procedure.

 result state

The state following each of the possible results of an action.

 result table

(1) The set of rows produced by the evaluation of a SELECT statement. See also base table, temporary table.

(2) In Query Patroller, a table created to store the result set of a query. See also result destination.

 result tree

The output document that is created when an XSL file is used to transform an XML file.

 result value

An explicit data value or a computed data value that is part of a result. See also result.

 resume

To continue execution of an application after an activity has been suspended.

 resume cursor

(1) A pointer that tracks the current location at which the exception handler may resume processing after handling an exception.

(2) The point in an application at which execution should continue if a condition handler requests the resume action for a condition it is processing.

 resume pending state

In cross-site mirroring, the configuration state of a mirror copy that indicates that geographic mirroring requires synchronization but that the disk pool is currently unavailable. When the disk pool is made available, the mirror copy will be synchronized with the current information on the production copy.

 resume point

An instruction in a program where processing continues after handling an exception.

 resuming state

In cross-site mirroring, the configuration state of the mirror copy that attempts to perform geographic mirroring and synchronization when the independent disk pool is available. The mirror copy state is resuming when it is not suspended or active.

 resynch

In WebSphere MQ, an option to direct a channel to start up and resolve any in-doubt status messages, but without restarting message transfer.

 resynchronization

(1) The completion of an interrupted two-phase commit process for a unit of work.

(2) A track image copy from the primary volume to the secondary volume of only the tracks that have changed since the volume was last in duplex mode.

 resynchronize

In OSI, a function of the session layer that enables two peers to coordinate the exchange of data to a previously marked point. This point was marked using the major or minor synchronization service. Resynchronization will normally be performed after a problem is detected by an application entity or indicated by the session layer.

 retail communications

The data communications support that allows programs on a System i system to communicate with programs on point-of-sale systems, using SNA LU session type 0 protocol.

 retail controller

In retail communications and Point-of-Sale Utility, a controller in a network that is used to collect data from and provide support for the point-of-sale and administrative devices within the retail system. The retail controller also provides some local data processing capabilities.

 retail pass-through

An i5/OS program that supports routing of user data between a System/370-type host processor and a retail controller using a single System i system. Both the SNA upline facility and the retail communications support use separate intersystem communications function sessions.

 RETAIN

See Remote Technical Assistance and Information Network.

 retained lock

(1) A MODIFY lock that a DB2 subsystem was holding at the time of a subsystem failure. The lock is retained in the coupling facility lock structure across a DB2 for z/OS failure.

(2) A method for protecting transaction updates when a problem delays transaction recovery of the updates. The retained status is cleared when transaction recovery is completed.

 retained publication

A published message that is kept at the broker for propagation to clients that subscribe at some point in the future.

 retain time

In IP PrintWay, the length of time to keep a data set on the JES spool after a transmission.

 retention

In Backup, Recovery, and Media Services, the total length of time that the output media is to be saved as a backup or archive copy before it is expired (available for reuse). Retention can be specified as a date, number of days, versions, or permanent. Different retention periods can be specified for full backups, incremental backups, or archive output.

 retention date

In DFSMSrmm, the date until which a data set or volume is retained by a vital record specification.

 retention-limit pruning

In SQL replication, the pruning of CD and unit-of-work tables by the Capture program that are older than a limit that the user specifies.

 retention period

The length of time that data should be kept in a certain location or form.

 retention type

The kinds of retention for which DFSMSrmm keeps a volume or data set before considering it for release.

 retired version

A specially marked backup version that DFSMShsm created before it deleted the original data set, not managed with the storage management subsystem (SMS), during data set retirement.

 retract

To remove the reference to the home of the bean in a namespace. Retract reverses the action of publish.

 retrieve

(1) To copy archived information from the storage pool to the workstation for use. The retrieve operation does not affect the archive version in the storage pool. See also archive, storage pool.

(2) To locate data in storage and read it so that it can be processed, printed, or displayed.

 retrofit

To change an existing program or system by adding or replacing a section of code or a physical unit and making necessary modifications to related units.

 retry

Pertaining to that which resends data a prescribed number of times or until the data is received correctly, for example, a retry option or a retry loop.

 retry limit

In IP PrintWay, the maximum number of retries that IP PrintWay is to attempt.

 retry time

In IP PrintWay, the time between two attempts to send the data set to its destination.

 return

(1) To remove the call stack entry and transfer control back to the calling procedure or program in the previous call stack entry.

(2) One or more products, their prices, and the quantity specified, that a customer has selected for a refund from the store in which the product was originally purchased.

 return code

(1) A value returned by a program to indicate the result of its processing.

(2) The collective name for completion codes and reason codes.

 return code equate

In DBCTL, an alphanumeric equivalent of a numeric return code, such as UERCNOAC for take no action. DBCTL uses return code equates in the XRF global user exits, XXDFA, XXDFB, and XXDTO.

 return indicator

An indicator to an RPG program that control should be returned to the calling program.

 return merchandise authorization (RMA)

Authorization from the seller for a customer to return products ordered from a store and receive a credit, refund, or replacement product. At the seller's discretion, a product does not need to be returned in order to receive a credit, refund, or replacement product.

 return on investment (ROI)

The amount of profit or cost saving that is realized for a given expenditure.

 returns administrator

A defined role in WebSphere Commerce that manages the disposition of returned products. See also logistics manager.

 return statement

A control statement in a programming language that contains the word "return" followed by an optional expression and a semicolon.

 return-to-sender

An option available to an MCA that is unable to deliver a message. The MCA can send the message back to the originator.

 return value

See return code.

 retype verification

A type of verification that requires the user to reenter the data to be verified.

 reusable asset

In the Reusable Asset Specification (RAS), a software artifact or a set of related artifacts that has been created or harvested with the explicit purpose of applying it in subsequent, separate development efforts.

 Reusable Asset Specification

A specification that describes processes for reusing software assets (modules or applications) for application development.

 reusable data set

A Virtual Storage Access Method (VSAM) data set that can be reused as a work file, regardless of its old contents. It must not be a base cluster of an alternate index.

 reuse guidelines

In the Reusable Asset Specification (RAS), a description of how the consumer should approach and apply an asset.

 reuse metrics

In the Reusable Asset Specification (RAS), a collection of metrics describing qualities of an asset such as how often it is used, its version, etc.

 reverse charging

In X.25, a packet-switching data network optional facility that allows the data terminal equipment (DTE) to request that the cost of a communications session be charged to the DTE that is called.

 reverse engineering

The process of decomposing a finished product into its elementary components in order to understand how the product was designed and developed.

 reverse engineering cycle

The set of supported or expected actions that are performed in response to a single reverse engineering invocation gesture.

 reverse image

Text that appears on the display in the opposite color (for example, black on green instead of green on black).

 reverse-interrupt character (RVI character)

The BSC transmission control character that is sent as a request from the receiving station to the sending station to stop transmitting and begin receiving a message.

 reverse map

To transform an Internet Protocol (IP) address to a host name as opposed to forward-mapping, where host names are transformed into IP addresses.

 reverse mapping domain

A domain that transforms Internet Protocol (IP) addresses to host names.

 reverse proxy

An IP-forwarding topology where the proxy is on behalf of the back-end HTTP server. It is an application proxy for servers using HTTP.

 reverse solidus

See backslash.

 review board member

One or more users that a community administrator specifies. The community administrator ultimately decides whether an asset is pushed into the approved state.

 review process

The framework for approving, retiring, or deleting assets.

 revisable-form text (RFT)

A data stream defined by document content architecture that is used to exchange unresolved documents (which cannot be directly printed or displayed) between systems. See also final-form text.

 Revisable-Form-Text Document Content Architecture (RFTDCA)

The architectural specification for the information interchange of documents whose text is in a revisable format. A Revisable-Form Text Document Content Architecture document consists of structured fields, controls, and graphic characters that represent the format and meaning of the document.

 revision

A distinct version of a project, document, or requirement identified by a unique internal revision number. See also version information.

 revision history

An audit trail of modifications and collaboration.

 revoke

To remove a privilege or an authority from an authorization identifier.

 revoke count

Number of unsuccessful signon attempts since the last successful signon with a particular userid.

 rewind

To move tape from the take-up hub to the supply hub.

 rework

In replication, an action that is taken when an SQL statement fails against a target table and the resulting SQL return code indicates that another SQL statement could be used to produce the desired result in the target table. An example is the conversion of an insert into a replication target table to an update if the insert fails because the row already exists in the target table. Another example is the conversion of an update to a replication target table to an insert if the update fails because the row does not exist in the target table.

 rewritable media

Media that can be erased, rewritten, or reused.

 REX

See route extension.

 REXEC

See Remote Execution Protocol.

 REXX (REXX)

See Restructured Extended Executor.

 REXX interpreter

The language processor of the i5/OS licensed program that processes procedures and programs written in the REXX language.

 RF

See radio frequency.

 RFC

(1) See Request for Comments.

(2) See request for change.

 RFC type

The kind of change that a request for change (RFC) defines. Each RFC is required to have a type. Release management process owners can edit or remove the predefined RFC types and create new types.

 RFI

See request for information.

 RFM

See recency, frequency, monetary.

 RFP

See request for proposal.

 RFQ

See request for quote.

 RFQ response

When using the RFQ trading mechanism, the reply that a seller sends to a buyer who has sent them an RFQ. The RFQ response indicates the terms and conditions under which the Seller will sell the products or services to that buyer.

 RFT

See revisable-form text.

 RFTDCA

See Revisable-Form-Text Document Content Architecture.

 RGB

Pertaining to a color display that accepts signals representing red, green, and blue.

 RH

(1) See response header.

(2) See request header.

 rich client

An application that is programmed in a traditional programming language with full access to the functions of an operating system, but retrieves data from Web pages as a thin client or embedded script would. See also thin client.

 rich client platform (RCP)

A framework for building Java applications with dynamic plug-ins.

 rich media

In a Web page, content that is aural, visual, or interactive, such as audio or video files.

 Rich Site Summary (RSS)

An XML-based format for syndicated Web content that is based on the RSS 0.91 specification. The RSS XML file formats are used by Internet users to subscribe to Web sites that have provided RSS feeds. See also feed.

 rich text

A field that can contain objects, file attachments, or pictures as well as text with formatting options such as italics or boldface.

 rich-text field

A field that can contain text, objects, file attachments, and pictures. Notes users can tell if they are in a rich-text field if the status bar at the bottom of the screen indicates the font size and font name being used.

 RID

See record identifier.

 RID pool

See record identifier pool.

 RIFF

See Resource Interchange File Format.

 right

See privilege.

 right adjust

To shift characters or digits to the right in a storage area.

 right align

To control the positions of characters on a page so that the right-hand margin of the printing is regular.

 right justify

To print text with an even right margin by adding extra space throughout a line.

 right outer join

The result of a join operation that includes the matched rows of both tables that are being joined and preserves the unmatched rows of the second join operand. See also full outer join, left outer join, join.

 rights

The permission to perform a certain action on a specific resource.

 RIM

See RDBMS Interface Module.

 RIM host

In the Tivoli environment, the managed node on which one or more RIM objects are installed.

 RIM object

An object that provides the attributes and methods that enable applications to access an RDBMS.

 RIM repository

In a Tivoli environment, a relational database that contains information that is collected or generated by Tivoli applications. Examples of a RIM repository include the configuration repository and the event database.

 ring error monitor (REM)

In communications, a function of the token-ring manager that observes, collects, and analyzes recoverable and irrecoverable error reports sent by token-ring stations on a single token-ring network and assists in fault isolation and correction.

 ring server topology

A network configuration in which servers are connected one-to-one in a circle with the ends connected. It is similar to chain server topology, which connects servers one-to-one but with the ends unconnected.

 RIO

See remote input/output.

 RIP

See Router Information Protocol.

 ripplestart

An action where the system waits for a member in a cluster to start before starting the next member of the cluster.

 RIS

See recoverable in-doubt structure.

 RISC

See reduced instruction set computer.

 risk

An ongoing or upcoming concern that has a significant probability of adversely affecting the success of major milestones.

 risk correlation

The process of correlating sensor events that deal with suspicious activity within a risk management environment. See also event correlation.

 Rivest-Shamir-Adleman algorithm (RSA)

A public-key encryption technology technology developed by RSA Data Security, Inc, and used in the IBM implementation of SSL.

 RJE

See remote job entry.

 RJP

See remote job processing.

 RLD count

The number of relocation dictionary (RLD) records in a load module that follow the text block that the count references. See also RLD record.

 RLD record

A record in a relocation dictionary (RLD) that contains information on relocatable address constants for that program object or load module. See also RLD count.

 RLDS

See recovery log data set.

 RLE

See run-length encoding.

 RLF

See resource limit facility.

 RLS

(1) See record-level subscriber.

(2) See record-level sharing.

 RLSD

See received line signal detector.

 RLT

See Release Link Trunk.

 RLU

See report layout utility.

 RM

(1) See requirements management.

(2) See resource manager.

(3) See Resource Manager.

 RMA

(1) See return merchandise authorization.

(2) See relationship management application.

 RM affinity

When RM and a resource structure are used, an association between an IMS and a user or node with LOCAL status recovery mode. If RM indicates that the user or node has RM affinity to an IMS, the user or node cannot log or sign on to another IMS. This affinity occurs because end-user significant status (conversation, STSN, or Fast Path) is being recovered on an IMS.

 RM distribution file

A file used to exchange relationship data with an relationship management application (RMA). It is the file that is created when you export bootstrap authorizations, and it is the file from which you import authorizations from an RMA.

 RMDS

See Relationship Management Data Store.

 RME

See resource model engine.

 RMF

See Resource Measurement Facility.

 RMI

(1) See resource manager interface.

(2) See Remote Method Invocation.

 RMI compiler

The compiler that generates stub and skeleton files that facilitate RMI communication.

 RMI/IIOP

See Remote Method Invocation over Internet InterORB Protocol.

 RMI registry

A server program that allows remote clients to get a reference to a server bean.

 RMI server

A server that implements the Java Remote Method Invocation (RMI) distributed object model.

 RMLT

See resource manager local transaction.

 RMM complex (RMMplex)

One or more instances of z/OS that share a common DFSMSrmm, or removable media manager (RMM), control data set (CDS).

 RMMplex

See RMM complex.

 RMODE

See residency mode.

 RMU

See resource management utility.

 RNR

(1) See receive not ready.

(2) See Rapid Network Reconnect.

 robbed-bit signaling (RBS)

The T1 channel -associated signaling scheme that uses the least significant bit (bit 8) of each information channel byte for signaling every sixth frame. This is known as 7-5/6-bit coding rather than 8-bit coding. The signaling bit in each channel is associated only with the channel in which it is contained.

 robot

For media library devices, a part (carriage and picker assembly) for moving media between the cartridge storage slots and the drives.

 Robots Exclusion Protocol

A protocol that allows Web site administrators to indicate to visiting robots which parts of their site should not be visited by the robot.

 ROD

See record oriented data.

 ROD dictionary

See record oriented data dictionary.

 ROD document definition

See record oriented data document definition.

 ROD field

See record oriented data field.

 ROD loop

See record oriented data loop.

 RODM

See Resource Object Data Manager.

 ROD record

See record oriented data record.

 ROD structure

See record oriented data structure.

 rogue metadata server

A metadata server that is not reachable from the cluster, fails to respond to requests, and might be running or have latent queued I/O.

 ROI

See return on investment.

 role

(1) A job function that identifies the tasks that a user can perform and the resources to which a user has access. A user can be assigned one or more roles.

(2) A position or responsibility within an organization, such as order entry clerk, marketing manager, travel advisor, sales associate, and so on. Activities are often assigned to roles rather than to individuals.

(3) A defined set of permissions that can be assigned to database objects such as fields, forms, and views to simplify their maintenance.

(4) A set of permissions.

(5) A logical group of principals that provides a set of permissions. Access to operations is controlled by granting access to a role.

(6) The behavior and characteristics that a given model element, classifier or other element can adopt for a given period of time.

(7) A description of a function to be carried out by an individual or bulk resource, and the qualifications required to fulfill the function. In simulation and analysis, the term role is also used to refer to the qualified resources.

(8) A definition of the behavior and responsibilities of an individual or a team within the context of a software engineering organization.

(9) A database entity that groups together one or more privileges and that can be assigned, for example, to users, PUBLIC, other roles, or trusted contexts.

(10) In a relationship, a role determines the function and participation of entities. Roles capture structure and constraint requirements on participating entities and their manner of participation. For example, in an employment relationship, the roles are employer and employee.

 role activation

The process of applying the access permissions to a role.

 role assignment

The process of assigning a role to a user, such that the user has the appropriate access permissions for the object defined for that role.

 role-based access control

The process of restricting integral components of a system based on user authentication, roles, and permissions.

 role-based authorization

The use of authorization information to determine whether a caller has the necessary privilege to request a service.

 role definition

The set of attributes that define a job function and its associated set of access rights to the Security Service of Tivoli Kernel Services. A role definition, which consists of a membership filter and a capability set, defines the access rights that principals are allowed to have for a resource.

 role mapping

The process of associating groups and principals recognized by the container to security roles specified in the deployment descriptor.

 roll back

(1) To restore data that is changed by an SQL statement to the state at its last commit point. See also point of consistency, roll forward, backout.

(2) To remove changes that were made to database files under commitment control since the last commitment boundary. See also commitment boundary, commitment control.

(3) To return to a previous stable condition.

 rollback

(1) The process of restoring data that was changed by an application program or user.

(2) See backout.

(3) In CICS, the cancellation by an application program of the changes it has made to all recoverable resources during the current logical unit of work.

(4) The execution of a scenario's compensation steps by InterChange Server to undo the effects of a partially completed scenario.

(5) An operation in a transaction that reverses all the changes made during the unit of work. After the operation is complete, the unit of work is finished.

(6) The process of restoring data that was changed by SQL statements to the state at its last commit point. All locks are freed.

 rollback required (RBR)

Pertaining to a logical unit of work (LUW) state in which a rollback vote was received for a prepare-for-commit request or that a failure has put the current transaction into a state where it must be rolled back.

 roll forward

To update the data in a restored database or table space by applying changes recorded in the database log files. See also roll back.

 roll-forward operation

The process of updating the data in a restored database or table space by applying changes recorded in the database log files.

 roll-forward recovery

A process that is used to recover a database by applying transactions that were recorded in the database recovery log file. See also crash recovery, version recovery.

 roll off

The status of the oldest copy of a data set when a new backup, dump, or generation data set (GDS) copy is created. Roll off specifies that the oldest copy is a candidate for deletion in order to maintain a customer-specified limit.

 rollout

The efficient deletion of a large portion of a multidimensional clustering (MDC) table, which is possible when a DELETE statement is processed that either has no predicates or certain types of predicates (equality, range, BETWEEN, IN) on one or more dimension columns. See also deferred index cleanup rollout, immediate index cleanup rollout.

 rollover

The transfer of monitored data to a data warehouse.

 roll-up rule

A rule that determines how student results are tracked for multiple items in a course. Results from course items are calculated (rolled up) into the results for each parent item, such as a topic or a main activity that contains sub-activities. Results for parent items are calculated into the results for the course.

 ROM

See read-only memory.

 room

A program that allows users to create documents for others to read, respond to comments from others, and review project status and deadlines. Users can also chat with others who are in the same room.

 root

(1) The user name for the system user with the most authority.

(2) The UNIX definition for a directory that is the base for all other directories.

 root activity

The activity at the top of an activity tree. It has no parent activity.

 root addressable area

In an HDAM or PHDAM database, the primary storage area in HDAM and PHDAM databases. IMS always attempts to put new and updated segments in the root addressable area, and if there is not enough room, IMS puts the segment into the overflow area instead. See also overflow area.

 root administrator

In a Tivoli environment, the initial Tivoli administrator that is created during the installation of the Tivoli Management Framework. This administrator is the root user on UNIX systems and a member of the administrator group on Microsoft Windows systems.

 root anchor point (RAP)

In an HDAM or DE database, a pointer at the beginning of each physical block that points to a root segment that belongs in that block.

 root bridge

The bridge that is the root of a spanning tree formed between other active bridges in the bridging network. The root bridge originates and transmits bridge protocol data units (BPDUs) to other active bridges to maintain the spanning tree topology. It is the bridge with the highest priority in the network.

 root cause analysis

The process of determining the first, or root, cause of a system failure, based upon the examination of the total set of problem-related artifacts within the system. Root cause analysis assumes that a complex problem in a larger system might manifest itself by way of the artifacts that are associated with the underlying subsystems within the system.

 root component

The first or only level of a hierarchical item type, consisting of related system- and user-defined attributes.

 root context

In the Reusable Asset Specification (RAS), a package from the Unified Modeling Language (UML) that contains the model(s) of a reusable asset.

 root directory

(1) In the operating systems for personal computers, the directory on a disk or diskette that contains the list of files stored on that disk or diskette. If more than one directory is on a disk or diskette, the root directory is at the top of the hierarchy of directories. The root directory is created by the operating system when the disk or diskette is formatted.

(2) The directory that contains all other directories in the system.

 root domain

Names servers that are authoritative for all of the top-level domains.

 root file system

The basic file system onto which all other file systems can be mounted. The root file system contains the operating system files that run the rest of the system.

 root folder

The folder on the system that contains all other folders. The system-recognized identifier is *ROOT.

 root installable unit

The top-level installable unit in a software package.

 root installation

An installation performed by the root user.

 root instance

A DB2 instance created by the root user from the DB2 product installed by that user.

 root load module

The load module that contains a main routine and that is the first to be executed in an application.

 root node

(1) In a graphical representation of data as a tree, a node that has no parents but typically has children.

(2) The common ancestor of all nodes in a set of nodes. There is only one root node for each XML instance document.

 root organization

The top level of an organization, which owns site-level access-control policies, and is automatically assigned all roles included in the product.

 root page

The index page that is at the highest level (or the beginning point) in an index.

 root path

The project directory on the WebSphere Portal content publishing server, used for importing and exporting structured content and file content.

 root requirement

A requirement at the top of the requirements hierarchy. A root requirement does not have a parent requirement.

 root segment

(1) The first part, or segment, of a program that must remain in main storage when other overlay segments are run.

(2) In a hierarchical database, the highest segment in the tree structure. See also dependent segment.

 root server

A name server that functions at the highest level node in the name system tree.

 root user

(1) In Linux and UNIX operating systems, a user who has superuser authority and root privileges. A root user's user identifier (UID) is 0.

(2) A system user who operates without restrictions. A root user has the special rights and privileges needed to perform administrative tasks.

 RosettaNet Partner Interface Process (PIP)

A specialized system-to-system XML-based dialog that depicts the activities, decisions, and partner role interactions that fulfill a business transaction between two partners in a given supply chain.

 roster

(1) To add one or more user records to the Lotus Learning Management System database.

(2) The set of user records in the Lotus Learning Management System database.

 rotary dial

On a switched communications line, the dialing method that creates a series of pulses to identify the called station.

 rotational position sensing (RPS)

A function that permits a disk storage device to disconnect from a block multiplexer channel (or its equivalent), allowing the channel to service other devices on the channel during positional delay.

 rotor

The rotating part of a sensor.

 round-robin

Pertaining to an operation in which the database manager provides a continuous, even distribution of data within memory, across data partitions, or across storage containers.

 round-trip conversion

A conversion where the integrity of all character data is maintained from the source CCSID to the target CCSID and back to the source. The characters that are in both the target CCSID and the source CCSID are preserved. Any characters outside the target CCSID are arbitrarily assigned unique code points in the target CCSID.

 round-trip engineering (RTE)

The mechanism used to synchronize code and model information. This term includes the code generation and reverse engineering features. This process enables you to model your application, analyze and refine it as you increase your understanding of its operation, then generate the code elements of a complete application framework based on that model. See also code generation, code synchronization.

 roundtripping

A process of converting data from one type to another and then back to the first type while preserving the format and content of the data.

 round-trip time

(1) See user experience time.

(2) The time it takes to complete an entire page request, which includes back-end service time, page render time, and network and data transfer time.

 route

The path that network traffic follows from its source to its destination. See also cut-through.

 route addition resistance (RAR)

A value that indicates a network node's capacity to perform intermediate session routing.

 route extension (REX)

In SNA, the path control network components, including a peripheral link, that make up the portion of a path between a subarea node and a network addressable unit (NAU) in an adjacent peripheral node.

 route list

A list that designates terminals or logical units, or particular operators, for which logical messages are to be scheduled for delivery.

 route metrics

In Internet communications, the method used by the Routing Information Protocol (RIP) to choose the best Internet routes. The unit of measure is the number of hops between the origin and destination. In practice, the metric for a route is often assigned based on factors such as link transmission speed and line cost, not on the actual number of hops.

 router

(1) A special purpose, dedicated computer that attaches two or more networks.

(2) A part of the System i Access licensed programs that handle requests to send and receive data from applications on the personal computer and routes them to the appropriate applications on the system.

(3) A computer that determines the path of network traffic flow. The path selection is made from several paths based on information obtained from specific protocols, algorithms that attempt to identify the shortest or best path, and other criteria such as metrics or protocol-specific destination addresses.

(4) An attaching device that connects two LAN segments at the reference-model network layer. The LAN segments can use similar or different architectures.

(5) An MVS program that presents a common systems interface for all products providing resource control. Resource managing components (such as CICS) call the MVS router as part of certain decision-making functions in their processing.

 router exit

A point in the MVS router that can be modified to use a user-written or a vendor-supplied external security manager, instead of having the MVS router pass control to RACF.

 Router Information Protocol (RIP)

The distance-vector routing protocol used by the Internetwork Packet Exchange (IPX) routers on the network to exchange routing information about the connected networks. The information is exchanged through the use of IPX. A RIP packet contains sets of network entry information.

 Route Selection control vector (RSCV)

A control vector that describes a route within an APPN network. The RSCV consists of an ordered sequence of control vectors that identify the TGs and nodes that make up the path from an origin node to a destination node.

 route selection services (RSS)

A subcomponent of the topology and routing services component that determines the preferred route between a specified pair of nodes for a given class of service.

 routine

(1) A set of statements in a program that causes the system to perform an operation or a series of related operations.

(2) In REXX, a series of instructions called with the CALL instruction or as a function. A routine can be either internal or external to a user's program.

(3) A program or sequence of instructions called by a program. Typically, a routine has a general purpose and is frequently used.

(4) A database object that can encapsulate procedural logic and SQL statements, is stored on a database server, and can be invoked using an SQL statement such as the CALL statement. The three main classes of routines are procedures, functions, and methods. See also aggregate function, built-in function, external routine, function, scalar function, sourced function, SQL routine, table function, user-defined function, SQL function, row function, SQL procedure, method, SQL method, procedure.

 routine-name

In COBOL, a user-defined word that identifies a procedure written in a language other than COBOL.

 routing

(1) The list of users who are to receive an item when it is distributed, including all users named specifically and those users named on distribution lists by the sender.

(2) The assignment of the path by which a message is to reach its destination.

 routing code

(1) For EMH, a user-defined code that allows transactions to be routed to programs within a load balancing group.

(2) A code assigned to an operator message and used to route the message to the appropriate console.

 routing-control data set

In Download for OS/390, a data set containing routing statements that associate routing criteria of class, destination, and form name with the socket addresses of Infoprint Manager for AIX, Infoprint Manager for Windows NT/2000, or OnDemand servers.

 routing data

Information stored in the job description that identifies the routing entry used by a job.

 routing entry

An entry in a subsystem description that specifies the program to be called to control a routing step that runs in the subsystem.

 routing file

An ASCII file that contains commands that control the configuration of messages.

 routing path

In an MSC network, the route through which IMS passes a message from its origination through processing. One or more systems may be included in a routing path.

 routing policy

A set of rules that determine how the server routes incoming requests.

 routing region

In the dynamic routing of BTS processes and activities, the CICS region on which the distributed routing program runs. In BTS routing, the routing region is the same as the requesting region. See also requesting region, target region.

 routing step

The processing that results from running a program specified in a routing entry. Most jobs have only one routing step.

 routing table

(1) In SNADS, a list of entries in a table that the system uses to route a message or electronic mail to a user on the system. Each entry is made up of a destination group name (such as a department or organization) and a destination element name (the user ID of each person in that department or organization).

(2) In a point-to-point profile, a collection of path information through which hosts or networks can communicate with other hosts and networks.

 routing transaction

A CICS transaction (CRTE) that enables an operator at a terminal owned by one CICS system to sign on to another CICS system connected by means of an IRC or APPC link.

 row

(1) The horizontal component of a table, consisting of a sequence of values, one for each column of the table.

(2) A horizontal arrangement of characters or other expressions. See also column.

(3) The file-system definition for a directory that is the base for all other directories.

 row blocking

See blocking.

 row-capture rule

In SQL replication, a rule that determines whether the Capture program captures changes for all columns or for registered columns only.

 row change timestamp column

A column that provides a way for the DB2 database manager to automatically generate and maintain a timestamp value for each row that is inserted or updated in a table. A table can have no more than one row change timestamp column.

 row function

An SQL function that optionally accepts arguments and that returns a single row of values. A row function can be implemented in SQL and used as a transform function to map attributes of a structured type to built-in data type values in a row. See also function, routine.

 ROWID

See row identifier.

 row identifier (ROWID)

A value that uniquely identifies a row. This value is stored with the row and does not change. See also record identifier, table lock.

 row lock

A lock on a single row of data. See also table lock.

 row operator area

The left-most column of a QBE target or example table.

 row-positioned access

The ability to retrieve a single row by using a single FETCH statement. See also rowset-positioned access.

 row-positioned fetch orientation

The specification of the desired placement of the cursor as part of a FETCH statement, with respect to a single row (for example, NEXT, LAST, or ABSOLUTE n). See also rowset-positioned fetch orientation.

 rowset

A set of rows for which a cursor position is established.

 rowset cursor

A cursor that is defined so that one or more rows can be returned as a rowset for a single FETCH statement and the cursor is positioned on the set of rows that is fetched.

 rowset-positioned access

The ability to retrieve multiple rows by using a single FETCH statement. See also row-positioned access.

 rowset-positioned fetch orientation

The specification of the desired placement of the cursor as part of a FETCH statement, with respect to a rowset (for example, NEXT ROWSET, LAST ROWSET, or ROWSET STARTING AT ABSOLUTE n). See also row-positioned fetch orientation.

 row trigger

A trigger whose granularity is defined by using the FOR EACH ROW clause.

 RPC

(1) See Remote Procedure Call.

(2) See remote mode.

 RPCBIND

A service that implements versions 2, 3, and 4 of the portmapper protocol. See also portmapper.

 RPC control program

In DCE Remote Procedure Call (RPC), an interactive administrative facility for managing name service entries and endpoint maps for RPC applications.

 RPC protocol

In the Distributed Computing Environment (DCE) Remote Procedure Call (RPC), a communication protocol that supports the semantics of the DCE RPC application programming interface (API) and runs over either connectionless or connection-oriented communication protocols.

 RPC protocol sequence

In the Distributed Computing Environment (DCE) Remote Procedure Call (RPC), a valid combination of communication protocols represented by a character string. Each RPC protocol sequence typically includes three protocols: a network protocol, a transport protocol, and an RPC protocol that works with the network and transport protocols.

 RPC runtime library

See Remote Procedure Call runtime library.

 RPC thread

In the Distributed Computing Environment (DCE) Remote Procedure Call (RPC), a logical thread within which an RPC is run.

 RPG

See Report Program Generator.

 RPG Java method call

A piece of ILE RPG code that calls various Java methods, enabling the use of prewritten Java code along with RPG fields and variables.

 RPI

See report interface.

 RPL

See request parameter list.

 RPQ

See request for price quotation.

 RPS

(1) See raster pattern storage.

(2) See rotational position sensing.

 RPW

See Rational process workbench.

 RQH

See request queue handler.

 RR

(1) See repeatable read.

(2) See receive ready.

(3) See resource record.

 RRB

See record resource block.

 RRDS

See relative record data set.

 RRLV

See reasonable resource loaded value.

 RRMS

See recoverable resource management services.

 RRN

See relative record number.

 RRS

See Resource Recovery Services.

 RRSAF

See Recovery Resource Services attachment facility.

 RRSF

See RACF remote sharing facility.

 RR_TOV

See resource recovery timeout value.

 RS

See read stability.

 RS-310

An Electronic Industries Association standard for designing racks to hold data processing equipment.

 RSA

(1) See Rivest-Shamir-Adleman algorithm.

(2) See register save area.

(3) See Remote Supervisor Adapter.

 RSA encryption

A system for public-key cryptography used for encryption and authentication. It was invented in 1977 by Ron Rivest, Adi Shamir, and Leonard Adleman. The security of the system depends on the difficulty of factoring the product of two large prime numbers.

 RSCN

See registered state change notification.

 RSCS

See Remote Spooling Communications Subsystem.

 RSCT

See Reliable Scalable Cluster Technology.

 RSCV

See Route Selection control vector.

 RSD

See restart data set.

 RSE

(1) See recoverable service element.

(2) See Remote System Explorer.

 RSE name

The name that an installation gives to the two IMS subsystems that form a recoverable service element (RSE).

 RSet

See resource set.

 RSR

See Remote Site Recovery.

 RSS

(1) See route selection services.

(2) See Rich Site Summary.

 RST

(1) See recoverable service table.

(2) See reset.

 RSVP

See ReSerVation Protocol.

 RTA

See real-time analysis.

 RTAM

See remote terminal access method.

 RTE

See round-trip engineering.

 RTGS

See real-time gross settlement system.

 RTGS-E

See RTGS-Express.

 RTGS-Express (RTGS-E)

One of the two channels that comprise RTGSplus. RTGS-E is for timed payments and payments that are to be scheduled immediately. Its payments (called express payments) always have priority over liquidity savings payments, which are handled by RTGS-L.

 RTGS-L

See RTGS-Liquidity Savings.

 RTGS-Liquidity Savings (RTGS-L)

One of the two channels that comprise RTGSplus. RTGS-L behaves like a netting channel, in that it holds liquidity in reserve rather than processing payments immediately.

 RTGSplus

The name of a real-time gross settlement system with integrated Target access; provided by the German Federal Bank (Deutsche Bundesbank).

 RTM

See recovery termination manager.

 RTP

(1) See Rapid Transport Protocol.

(2) See Real-Time Transport Protocol.

(3) See remote terminal processor.

 RTP connection

See Rapid Transport Protocol connection.

 RTS

(1) See reliable transfer server.

(2) See request to send.

 RTSP

See Real Time Streaming Protocol.

 RU

(1) See response unit.

(2) See request/response unit.

(3) See request unit.

 Ruby

An object oriented interpreted scripting language that borrows its straight forward syntactic style from Perl, Python, ADA and Java.

 ruby annotation

The assigning of ruby text to word formation elements.

 ruby text

An explanatory line of text alongside a line of base text that is used in documents to indicate pronunciation or to provide annotation.

 RU chain

In SNA, a set of related request or response units that are transmitted consecutively on a particular normal or expedited data flow.

 rule

(1) A solid or patterned line of any weight (line width) that extends horizontally across a row or page, or vertically down a column or page.

(2) A set of conditional statements that enable computer systems to identify relationships and execute automated responses accordingly.

(3) A condition that must be satisfied when performing a business activity.

(4) A list of conditions and actions that are triggered when certain conditions are met. Conditions include attributes about an object (file name, type or extension, dates, owner, and groups), the requesting client, and the container name associated with the object. See also file-placement rule.

 rule action

A named section of a rule that contains one or more predicate calls to run if the rule evaluates to true.

 rule base

One or more rule sets and the event class definitions for which the rules are written. The Tivoli Enterprise Console product uses the rule base in managing events. An organization can create many rule bases, with each rule base fulfilling a different set of needs for network computing management. However, only one rule base can be active at a time.

 rule-based break iterator (RBBI)

A construct that identifies token boundaries (or breaks) in text that is based on regular expressions and defined in terms of Unicode characters and character properties.

 rule-based category

Categories that are created by rules that specify which documents are associated with which categories. For example, you can define rules to associate documents that contain or exclude certain words, or that match a Uniform Resource Identifier (URI) pattern, with specific categories.

 rule editor

A graphical tool used to create rules.

 rule logic

The business logic, which is expressed by a business rule, that consists of decisions that affect how a business responds to specific business conditions. For example, a decision that determines how much of a discount to give to a preferred customer is rule logic.

 rule mapping

See spot mapping.

 rules-based personalization

Personalization technology that enables you to customize Web content based on user needs and preferences, and business requirements.

 rule schedule

An interface for modifying the values of a business rule in the rule logic selection record.

 rule set

(1) A file that contains one or more rules.

(2) An if-then statement composed of a set of textual statements or rules where the "if" is the condition of the rule and the "then" is the action. In a programming environment, each of these rules is evaluated sequentially, and each condition that evaluates to true is acted upon. See also decision table, if-then rule.

 rules file

A file that contains rules and definitions that pertain to those rules.

 rules table

A control file containing one or more rules that the dead-letter queue handler applies to messages on the dead letter queue (DLQ).

 rule trigger

See content spot.

 ruling

The result of a conformance check for a single governing privacy policy. A conformance check result can be either pass or fail. A failed conformance check returns a default ruling. See also compliance check, conformance check, default ruling.

 run

(1) A string of repeated, adjacent characters or symbols. See also run-length encoding.

(2) To cause a program, utility, or other machine function to be performed.

 RunAs role

A role used by a servlet or an enterprise bean component to invoke and delegate a role to another enterprise bean.

 runaway task

A task that has been dispatched and does not return control to CICS within a user-specified time interval. The program being used by this task is in a loop between two CICS requests. The task control program ends the task after expiration of this time interval.

 rundown procedure

In DCE Remote Procedure Call (RPC), a procedure used with a context handle that is called after a communications failure. It recovers resources reserved by a server for servicing requests by a particular client.

 run history

See execution log.

 run-length encoding (RLE)

(1) A technique for compressing data that avoids repeatedly having to code data elements of the same value; instead, the value is coded once, along with the number of times for it to be repeated.

(2) A type of compression that is based on strings of repeated, adjacent characters or symbols, which are called "runs." See also run.

 Run On Server

A feature of WebSphere Studio, which enables the developer to test or preview a project using the embedded WebSphere Application Server. Sometimes referred to as "WebSphere Application Server Test Environment."

 run time

The time period during which a computer program is running. See also system time.

 runtime

Pertaining to the time period during which a computer program is running.

 runtime array

In RPG, an array that is loaded or created by input or calculation specifications after the program starts to run. See also compile-time array, preruntime array.

 runtime default

In query management, any of the formatting elements of a formatted report that was not explicitly specified in the form.

 runtime descriptor definition

The runtime template (in an internal format of control blocks) that can be used as a model when creating runtime resource definitions. See also runtime resource definition.

 runtime environment

A set of resources that are used to support the execution of a program.

 Runtime Environment for Java

See IBM Runtime Environment for Java.

 runtime library

(1) A compiled collection of functions whose members can be referred to by an application program at run time.

(2) A library that is loaded dynamically and used during execution time.

 runtime object

An object used by the translator, such as a control string, code list, translation table, or user exit profile.

 runtime resource definition

The resource information such as attributes, status, and relationships to other resources that IMS maintains at run time in an internal format called control blocks. The runtime resource definitions include, but are not limited to, database directories (DDIRs), program directories (PDIRs), data management blocks (DMBs), program specification blocks (PSBs), Fast Path routing codes (RCTEs), and scheduler message blocks (SMBs) or transactions.

 runtime table

In RPG, a table that is loaded or created by input or calculation specifications after the program starts to run. See also compile-time table, preruntime table.

 runtime task

A generated administrative action plan that contains recommendations to improve the health and performance of a runtime environment.

 runtime variable

A variable in a procedure or query whose value is specified by the user when the procedure or query is run. The value of a runtime variable is only available in the current procedure or query. See also global variable.

 run unit

(1) In COBOL, a set of one or more programs that run as a set to solve a problem. A set starts with the first COBOL program in the call stack and includes all programs (COBOL) (non-COBOL) that are below it in the call stack.

(2) One or more object programs that are executed together.

 RUOW

See remote unit of work.

 RUP

See Rational Unified Process.

 rvalue

An expression that cannot have a value assigned to it. The result of calling a function that does not return a reference. Rvalues always have complete types or the void type. See also lvalue.

 RVI character

See reverse-interrupt character.

 RVX

The Electronic Industries Association (EIA) RS standards (for example, RS-232); the ITU/CCITT standards (for example, V.24 for modem interconnects and protocols); and the ITU/CCITT standards for interconnects and protocols (for example X.21). ITU is the International Telecommunications Union, and CCITT is the International Consulting Committee for Telephony and Telegraphy.

 RXA

See Remote Execution and Access.

 RXE Expansion Port

The dedicated high-speed port used to connect a remote I/O expansion unit, such as the RXE-100 Remote Expansion Enclosure, to a server.

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