Creating Dataviews for VSAM Files › Runtime Considerations for VSAM Dataviews › Updating: Use of the Primary Index

Updating: Use of the Primary Index

Although CA Ideal can retrieve records from a VSAM file using either the primary or an alternate key (index), CA Ideal only updates records in a VSAM file using the primary index. This means that a record that was read and must be updated or deleted is reread with exclusive control using the primary index. CA Ideal then verifies that the record was not deleted or changed since the original access before updating or deleting the record.