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Class Diagram

Roger Zacharias
Ranch Hand

Joined: Jul 01, 2003
Posts: 49
Hi Pamir,
concratz! Go and party!
Concerning your class-diagram (I think this is the crux in most assignments and you have negotiated it):
- Did you show attributes and ops in the class diagram?
- How many classes do you have?
- Have you changed the BDM?
- Have you consolidated some BDM classes?
Best regards

Ajith Kallambella

Joined: Mar 17, 2000
Posts: 5782

- Did you show attributes and ops in the class diagram?

I recommend showing *all* attributes and ops that are involved in business transactions and process flow. As the assignment mentions, you don't have to show other insiginficant attributes and you can safely ignore showing getters and setters.

- How many classes do you have?

It greatly depends on your solution and how you count them. Some people have chosen to show classes outside the scope of the solution( such as standard Java classes ) for the sake of clarity whereas others have not included them to avoid clutter. Same is true for showing/hiding Home, Remote and Bean implementation classes for every EJB.

- Have you changed the BDM?

The keyword is not change but extend. As the name suggests, it is the Business Domain Model that represents very high level relationships between domain level entities. Normally problem analysis yields more classes and refines the BDM. Note that the final design model cannot contradict( omit, render vague or nullify ) any association and cardinality specified in the BDM.

- Have you consolidated some BDM classes?

See my response above.
[ September 22, 2003: Message edited by: Ajith Kallambella ]

Open Group Certified Distinguished IT Architect. Open Group Certified Master IT Architect. Sun Certified Architect (SCEA).
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