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Linked models (PowerDesigner)

former_member554397
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You link the BPM, PDM, RQM and EAM data models to each other through Extended attributes of the Object type ?

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Ondrej_Divis
Contributor

For impact analysis purposes is very important to be able to configure the parameters of your analysis (i.e. define your own rule-sets). Thanks to that you will see only such types of connections you want to see. And if there are too many rules (=rule sets are too wide), you will find out, that everything is connected to everything. The only way to prevent this everything-to-everything scenario, I`d recommend using more specific types of connections whenever it is possible.

For example:

  • source-target connections between tables in PDM: mappings
  • BPM to PDM: Related Diagrams connection might make sense in some cases
  • objects inside EAM: Role association might be appropriate candidate

Only in cases there is no other, more "native" connection available I`d think about extended attribute (Object). And I still think that using Traceability link might be more appropriate for Impact analysis purposes, because it doesn`t show you worthless Extended Composition nodes. See attached example. Process_2 uses extended attributes and Process_3 uses Traceability links. Which one is more simple and readable?

Ondrej