Usage Considerations

When defining the CA IDMS/DB equivalents for your DL/I structures, keep in mind the following usage considerations:

CA IDMS DLI Transparency does not support multiple noncontiguous sequence fields for a virtual logical segment. A single sequence field, however, is supported.
CA IDMS DLI Transparency always uses the following delete rules: physical, virtual, logical, for the physical parent, logical child, and logical parent, respectively. Refer to the appropriate DL/I documentation for a description of the delete rules.
CA IDMS DLI Transparency supports sparse indexing through null-value specifications or index suppression exits. If you use index suppression exits, you must convert the exits to CA IDMS/DB database procedures.
For more information about a detailed description of index suppression exits, see Index Suppression Exit Support.
You must convert segment edit/compression exits to CA IDMS/DB database procedures.
CA IDMS DLI Transparency supports PROCOPT E on the PCB statement. To reflect this processing option, you must specify EXCLUSIVE for the CA IDMS/DB area ready option.
CA IDMS DLI Transparency automatically supports PROCOPT O and requires no additional specification for it.