If I access an external subsytem(say an external DB), should I show that subsytem in the domain class diagram. I believe I shouldn't as it is external to the business domain I'm concerned about. Let me know if I'm wrong. Of the following 2 options, what is the most common way a session bean would interact with an external DB. (a) SB-->DAO-->(external DB) (b) SB-->(POJO interface object)-->DAO-->(external DB) I seem to like (b) as an interface is usually used to show calls to external systems. If there are better options than these 2 that represent communication with external systems more clearly, please provide more info on those.
posted 12 years ago
Search this forum for Parag Doshi's notes on Class Diagram. It answers your question.
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