Overview

CA IDMS/DB can access information from native VSAM data sets. A native VSAM data set is one that is defined to VSAM and contains VSAM records. Although a native VSAM data set is not structured as a CA IDMS database, it can be accessed as if it were.

Note: Native VSAM files are different from database files that have VSAM as an access method.

This appendix describes:

Native VSAM data set structures
Schema, segment, and DMCL considerations
DML functions that can be used to access native VSAM structures