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Use Case

 
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I have two queries on Use Case Diagram. Can any one clarify:

1. What is Use Case Specification?
2. What is Use Case Realization

Thanks
Jagdish
 
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Hi Jagadish,


1. What is Use Case Specification?


As far as i know, Use Case Specification is basically Pre-Condition, Success Scenarion, Alternatives and Post-Conditions. The Specification basically specifies or describes ways to fulfill the user/stakeholders requirements.


2. What is Use Case Realization


As far as the Use Case Realization concerned, It basically inspires to come up with Conceptual Domain Model (i.e., being able to identify concepts in the domain - classes) and design Model. More specifically, the Use Case is realized by developing Domain Model - creaing Class Diagrams and Design Model - with Interaction Diagram and other artifacts. The idea is that all the specification defined in the Use Case are met/acheieved.

I would like other experienced veterns to comment on it for more clarification.
thanks.
 
Kj Reddy
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Thanks Ray. Let me see if I can get more clarifications from others :-)
 
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A use case specification is the text of the use case itself. I have several examples posted online linked to from http://www.agilemodeling.com/artifacts/.

A use case realization is a RUP artifact. It's basically the collection of artifacts which describe the design which fulfills the use case specification. Frankly I think it's an artificial concept and have never found any use for it in practice. However, if you find value in it then go for it.

- Scott
 
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