Use Case Diagrams

Use Case Diagrams:

  • A use case in software engineering and systems engineering is a description of a system’s behavior.
  • In other words, a use case describes "who" can do "what" with the system in question.
  • The use case technique is used to capture a system's behavioral requirements by detailing scenario-driven threads through the functional requirements.


  • An actor represents a set of roles that users of use case play when interacting with these use cases.
  • Actors can be human or automated systems.
  • Actors are entities which require help from the system to perform their task or are needed to execute the system’s functions.

Use Case Diagram for School Management

Fig: Use Case Diagram for School Management

Use Case Diagram for Point of Sale

Fig: Use Case Diagram for Point of Sale


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