Construct data conversion and bridge programs

Understand the bridge performance requirements. If the bridge is slated to be burned, these are less important than for interface bridges:

Verify bridge parameters to ensure that they are still appropriate:

Change data definitions by:

Construct data conversion programs

Implement data conversion by (in order from most to least effort):

This is one place where using a century window can be quite useful:

  1. To expand your data
  2. Create a mirror image of your production system
  3. Read in the old; write out the new
  READ OLD-INPUT-FILE
  CALL CEEDAYS USING OLD-INPUT-FILE-DATE,
                     OLD-PIC-STRING,
                     LILIAN-RETURN,
                     FC

  CALL CEEDATE USING LILIAN-RETURN,
                     NEW-PIC-STRING,
                     NEW-OUTPUT-FILE-DATE,
                     FC

  WRITE NEW-OUTPUT-RECORD

You can do the same thing for IMS and DB2 data.

DFSORT can do the same thing.

Implement date scrubbing via:

Compile and link conversion programs.

Construct new bridge programs

Create bridge programs that:

Tip: you may be able to choose an implementation alternative:

Remember: in addition to building bridges between partitions, you may have to build interfaces (internal bridge) within a partition if a mix of date approaches is used.

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