HP Integrity NonStop J-Series - Manual (Page 153)

MODIFYING A GENERATED APPLICATION
• Provide users of the application with the ability to call
another application. To do this, you modify the source code
to include a call to another requester program. Refer to
Section 11 for more information about this type of
modification.
• Introduce consistency restraints if you are an experienced
SCREEN COBOL programmer. An application generated by ENABLE
cannot prevent you from deleting a record from a parent box
before you delete the matching record (or records) from the
child box. If you delete a parent record before you delete
its matching child records, you can no longer read the child
records. Therefore, you can no longer use the application to
delete these records.
If this occurs, your data base might contain inconsistent
information. To avoid this problem, you could add your own
consistency restraints. Adding such restraints is not a
trivial task and should not, therefore, be undertaken by
anyone who is not an experienced SCREEN COBOL programmer.
• Change the position of fields on the screen, with the
following restrictions:
--Each record must remain contiguous; you cannot intersperse
fields from one record with fields from another record.
--The first and last field of a record must remain in their
respective positions; you cannot change the position of
these fields within a record.
If you regenerate an application after you have made
modifications to the SCREEN COBOL source code, you will have to
add those modifications to the regenerated source code.
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