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Use Case Model

Use Case Model 
Actor
  • Actor is something external to the system and interacts with the system 
  • Actor may be a human being, device or some other software system 
  • For library system, actors might be a 
➤Librarian 
➤Borrower 
    Use case 
    A use case represents sequence of actions performed by the system that yields an observable result of value for a particular actor. Use case represents a functional requirement of a system.
    For library system, we can find the following use cases 
    • Login 
    • Search 
    • Browse 
    • Checkout item 
    • Return item 
    • Make reservation 
    • Cancel reservation 
    • Manage titles 
    • Manage items 
    • Manage borrowers 
    • Manage librarians
    Use Case Diagram
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