TAILIEUCHUNG - Lecture Software engineering: Lecture 5 - Ivan Marsic

Lecture 5: Use cases. The following will be discussed in this chapter: Actors, goals; sketchy/summary use cases; use case diagram; traceability matrix; system boundary and subsystems; detailed use case specification; system sequence diagrams; security and risk management. | Ivan Marsic Rutgers University LECTURE 5: Use Cases Topics Actors, Goals Sketchy/Summary Use Cases Use Case Diagram Traceability Matrix System Boundary and Subsystems Detailed Use Case Specification System Sequence Diagrams Security and Risk Management Use Cases For Functional Requirements Analysis and Specification A use case is a description of how a user will use the system-to-be to accomplish business goals Detailed use cases are usually written as usage scenarios or scripts, listing a specific sequence of actions and interactions between the actors and the system Deriving Use Cases from System Requirements REQ1: Keep door locked and auto-lock REQ2: Lock when “LOCK” pressed REQ3: Unlock when valid key provided REQ4: Allow mistakes but prevent dictionary attacks REQ5: Maintain a history log REQ6: Adding/removing users at runtime REQ7: Configuring the device activation preferences REQ8: Inspecting the access history REQ9: Filing inquiries ( Actors already given if .

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