When confronted with a legacy system with large numbers of essentially undocumented components, has anyone found it useful to create some sort of data model/entity relationship model? Something that starts with the build dependencies but maybe goes further.
I often run into components in legacy systems and yes documenting interface and dependencies would certainly be a great idea. However, my experience is that the SMEs are often no longer around and this may be very difficult to accomplish.
What say you?
Bob Aiello, Technical Editor CM Crossroads
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