Online Session › A Sample Selection Criteria Specification Session › Step 2. Specify the Source and Target Subschemas › Rules for Source and Target Subschemas

Rules for Source and Target Subschemas

All non-system-owned, integrated index records and sets in the source subschema must also be in the target database. The records defined in the source and target subschemas can reside in different areas and can have different page ranges. Additionally, the source and target subschemas must:

• Have record types that are the same length.
• Contain the same record/set relationships. That is, an owner or member of a set in the source database must be an owner or member of the same set type in the target database.
• Be accessible to the online component so that the above rules can be validated. Either subschema can reside in a dictionary load area or in a load/core-image library.

Note: The Compare Subschemas field allows CA IDMS Extractor to bypass comparisonof the source and target subschemas. This allows the batch Database Extract Component of CA IDMS Extractor to access a database whose subschema is not accessible by the online Selection Criteria Specification component.