Events and exceptions

An event is an occurrence of significance to a task or a system. Exceptions are entities that are generated by a condition or event and that might require additional information or investigation.

Events

Events can include completion or failure of an operation, a user action, or the change in state of a process. When events occur, tools can create events of varying types, store them in the metadata repository, and register them with event services. Events have names, properties, and associated notification types.

When events relate to data quality issues, you can see the details of those exceptions in Data Quality Exception Console or manage them in IBM® Stewardship Center.

Exceptions and exception sets

Depending on your organizational goals and processes, the following entities might be considered exceptions:

Records that do not meet the conditions of data rules in IBM InfoSphere® Information Analyzer
Clerical matches in IBM InfoSphere DataStage® and QualityStage®

When an event generates multiple exceptions, an exception set is created and made available to Data Quality Exception Console. An exception set provides information about the set of exceptions that were produced by the event. Each product or component provides exception sets to the Data Quality Exception Console in its own way, and provides its own set of information about the exceptions. Exception sets are created in the following ways:

In InfoSphere DataStage and QualityStage, an exception set is created each time a job that includes an exception stage is run. An exception set is created for each exception stage in the job.
In InfoSphere Information Analyzer, an exception set is created each time that a data rule is run.

Exception sets provide information such as the category of the exceptions, when the exceptions were generated, and who is responsible to resolve the exceptions. If exceptions were generated and the product stores the exceptions, you can view the exception sets in Data Quality Exception Console.

Data Quality Exception Console can send exception sets to the Data Quality Exception sample process application in IBM Stewardship Center or to IBM BPM processes, depending on the way that those exception sets were generated.

Related exception sets are exception sets that were generated in the same way, as defined by your system administrator. An example of related exception sets might be exception sets that are created by the same exception provider, such as InfoSphere Information Analyzer, or by a specific InfoSphere Information Analyzer rule or InfoSphere DataStage project name, job name, or stage name.