Converting DBOMP to CA IDMS/DB › Overview

Overview

This chapter provides detailed instructions for converting DBOMP data and programs to CA IDMS/DB.

Conversion Steps

To convert a DBOMP system to CA IDMS/DB, you must:

1. Design the CA IDMS/DB database. Use DBOMP file organization modules, I/O modules, and file description modules as design aids and then discard them; these modules are not integrated into a CA IDMS/DB runtime system.

   Note: The Mixed Page Group Binds Allowed feature may not be used with CD IDMS/DBOMP Transparency. For more information on this step, see the CA IDMS Database Design Guide.

2. Convert and transfer existing data from the DBOMP database to the CA IDMS/DB database.
3. Convert DBOMP load, maintenance, and retrieval/update programs to CA IDMS/DB.

Cautions on the Duplication of Logic

Because of the basic differences between CA IDMS/DB processing and DBOMP processing, don't expect CA IDMS/DB to duplicate DBOMP logic in all applications. This applies particularly to RACN and chain count routines. Since CA IDMS/DB handles these functions internally, it is usually not necessary to maintain the routines in converted programs.

However, should these routines be required, you must integrate the necessary logic into converted programs. For example, if RACN is implemented in the converted program, you must establish a file control record for each applicable master file and insert the program logic to update it.