This chapter gives a simple description of the CICS® intercommunication functions.
In Summary of CICS intercommunication functions, the figures and explanations deliberately gloss over technical details, but present the functions as seen by an application programmer. The important point is that function shipping, asynchronous processing, transaction routing, and distributed program link (DPL) are powerful distributed functions that are transparent to the application programmer. Applications can access local or remote resources and programs entirely under the control of definitions created by the systems programmer.
Distributed transaction programming is a more complex facility and application programmers need to be aware that a dialog is taking place with a remote transaction. The program logic must react to the current state of the dialog.
Which intercommunication function? gives some guidelines for the selection of the correct intercommunication function for particular requirements.
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