DB2 Catalog Synchronization

The job DB2 Catalog Synchronization loads information for the cardinality for DB2 tables and the existence of a key or the existence of an image copy into the Data Express Knowledge Base.

The job must be executed before subsetting the data using Data Subset Extraction. If cardinality information or the existence of a key or image copy stored in the system catalog has changed, the job must be executed again.

For more information, see chapter DB2 Catalog Synchronization in the Toolkit (z/OS).