Rational Developer for System z
Enterprise COBOL for z/OS, Version 4.1, Programming Guide


Developing COBOL programs for IMS

Although much of the coding of a COBOL program will be the same when running under IMS, be aware of the following recommendations and restrictions.

In COBOL, IMS message processing programs (MPPs) do not use non-IMS input or output statements such as READ, WRITE, REWRITE, OPEN, and CLOSE.

With Enterprise COBOL, you can invoke IMS facilities using the following interfaces:

You code calls to CEETDLI the same way as you code calls to CBLTDLI. CEETDLI behaves essentially the same way as CBLTDLI.

You can also run object-oriented COBOL programs in an IMS Java dependent region. You can mix the object-oriented COBOL and Java languages in a single application.


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