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What we do with the IDMS/DC program
…
Create a structured COBOL program for
each IDMS/DC program using automated tools.
All comments in the original code can
be carried through to the migrated code.
Each copy IDMS is converted to a COBOL
copy statement with IDMS copybooks becoming COBOL copybooks.
Copybooks are inserted for the SQLCA
and additional working storage areas including record
areas, work areas, screen buffer areas, and necessary
SQL and screen I/O areas.
What about the map definition and I/O …
For each ADS/O or ADSA map or menu,
the Data Definition Specifications for the display file
are generated and a COBOL copybook that reflects the structure
of the display buffer is generated.
Replace all map related statements
with the appropriate AS/400 display statements.
MODIFY MAP is replaced with a move
to the screen buffer.
Cursor positioning is translated.
Maps are displayed with an AS/400 write
and received with an AS/400 read.
And what about navigation and ADSA security…
Navigation throughout the application
is maintained.
A traffic cop manages program-to-program
flow.
IDMS/DC statements for invoking the
next dialogue are converted return to the traffic cop
to call the next program.
Program to program communication
is maintained.
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