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Multiple actors on a seq diagram

 
Jeff Belisle
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In context of part 2 assignment: is it a good idea to show multiple actors on same sequence diagram?

i.e. Java application user: TravelAgent & InterUser: customer.

UML allows me to do so.
 
Newman Huang
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hi, Jeff

is there any differences for agent and customer to use the system?
 
Jeff Belisle
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Yes, standalone Java app does not need to go through Servlet. It can directly hook up with EJBs on app server and will have its own copy of business delegate and service locator.

Guiding principle: java app needs top performance, so it should directly tap in EJB apis.
 
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