ITM 305 Chapter Notes - Chapter 5: Use Case

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 305
• Professor: Lin Ying Dong

Document Summary

Several variaions may exist within single use case. Capture diferent ways (steps) through which a use case could be accomplished. Ofer convenience for users when using the system. Is oten a one sentence descripion showing the main steps in a use case. Has a beginning , a process and an end. Beginning shoes the acion that triggers the use case. Process summarizes the info exchanged between an actor and the system. End shows the result of a use case. Use case descripion (for more complex use cases) Scenario (if needed) - a use case can have more than one scenario (special case or more speciic path) Triggering event - based on event decomposiion technique. Brief descripion - writen previously when use case was ideniied. Actors - one or more users from use case diagrams. Use a simple statement to describe the acion of the actor and the system. Avoid speciic technologies (e. g. , butons, drop-down menu, database, page frame)