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sequence diagram with actor

talu singh

Joined: Jun 07, 2010
Posts: 18
When drawing a sequence diagram for a use case (for scea 5), do you need to display actor also?

Reading document at http://www.sparxsystems.com/resources/uml2_tutorial/uml2_sequencediagram.html makes me think it is a good idea to include it.
But does any one know if Boundary, control and entity elements also needs to be included in sequence diagram.

sivan jai
Ranch Hand

Joined: Feb 24, 2010
Posts: 115
personally I didnt include the actor in the sequence diagram.
Drago Z Kamenov

Joined: Oct 17, 2009
Posts: 12
I think you should include the Actor in the sequence diagram. Boundary, Control & Entity are Rational/IBM concepts as is the concept of "Use case realization" so they are not part of the UML standard. Specifically, in Rational Rose they use different UML representation for those types of classes. If you do decide to use "Boundary/Control/Entity", make sure you represent them as classes (maybe strereotyped) and not using the Rose notation. That's what I am doing anyway.

Hope this helps.

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subject: sequence diagram with actor