CS401UML- Use Case
Describe how a system interacts with its environment: typical interactions involving its users.
Use Case = goal-oriented collaboration between a system and an actorActor = a user adopting a particular role. Agent = like actor Action = any goal-oriented collaboration, activity, task, operation or job connecting agents in a business, system or project. |
Use-Case description
| name |
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goal The goal represents its specification: the result(s) it achieves, and/or a condition that it maintains. |
| participants |
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parameters the objects involved (actively or passively) that are different from one occurrence of the use case to another. |
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pre-condition (optional) a statement defining under what conditions the use case makes sense. |
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post-condition (optional) a statement defining changes after use-case executed. |
| NOTE: Can use UML's Object Constraint Language (OCL) to format these description fields |
Example: Use-Case Diagram and Description
 |
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use case: buy_thing participants: (Purchaser, Vendor, Thing) pre-condition:
post-condition:
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