As a DL/I database administrator (DBA) or application programmer, and CA IDMS/DB Correspondences/ you are already familiar with DL/I.
DL/I and CA IDMS/DB are similar in many ways. As database management systems, they both separate the logical definitions of data from the actual data as stored on disk. They both provide top-level definitions of the data and the relationships supported for the data. In addition, they provide second-level definitions that serve as application-specific views of the top-level definition.
This section describes DL/I, CA IDMS/DB and the correspondences between them.
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