Chapter 9. Tracing the Change of Address scenario 197
9.2 The annotated trace of the scenario
The following traces describe the most common scenario of the Change of
Address application, that is, the actual change of address. In this scenario, the
postal service operator makes a change to a
registered person’s address using
option 3 of the Change of Address application. This makes the change to the
mainframe DB2 table and puts the hash code of the old address onto the
publication queue. The CICS program finally sends a response screen to the
operator indicating success and the new hashcode.
The HashPublication message flow running on the System z broker now
publishes the hashcode to all the registered subscribers of the topic:
CICSWSAP/AddressChange, ...