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INFS 6225 Object Oriented Systems Analysis & Design

INFS 6225 Object Oriented Systems Analysis & Design. Chapter 4: Functional Modeling. Use-Case. Illustrates the activities performed by the users of a system Depict the Users’ view of a system Are logical models Are technology-independent

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INFS 6225 Object Oriented Systems Analysis & Design

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  1. INFS 6225Object Oriented Systems Analysis & Design Chapter 4: Functional Modeling

  2. Use-Case • Illustrates the activities performed by the users of a system • Depict the Users’ view of a system • Are logical models • Are technology-independent • Can be used to describe current (As Is) or future (To Be) system

  3. Use-Case: 2 Parts • Use-Case Descriptions – Written, less formal documents that describe the functions of a system • Use-Case Diagram – Formal, graphical representation of the functions of a system Use-Case Descriptions are created first; Use-Case Diagrams are then created from Use-Case Descriptions

  4. Use-Case Description Use Case Name: ID: Importance Level: Primary Actor: Use Case Type: Stakeholders and Interests: Brief Description: Trigger: Relationships: (Association, Include, Extend, Generalization) Normal Flow of Events: Subflows: Alternate/Exceptional Flows:

  5. Use-Case Diagram

  6. Use-Case Diagram Components

  7. More Complex Diagrams

  8. Practice Exercises

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