2021503530-use case diagram for library.pptx

Good Ppt for OOAD

1. Use Case Diagram for Online Library Management System S.NITHISH KUMAR 2021503530

2. Use Case Diagram A use case diagram is a type of Unified Modeling Language (UML) diagram that is used to visualize the interactions between various actors (which can be individuals, other systems, or external entities) and a system to achieve specific goals or functionalities. Use case diagrams are primarily used to represent the functional requirements of a system from an external user's perspective. They provide a high-level view of the system's behavior and the ways in which different actors interact with it. Key elements and concepts in a use case diagram include: Actor : An actor is an external entity, which can be a user, another system, or some other entity that interacts with the system. Actors are represented as stick figures or other simple shapes on the diagram. Use Case : A use case represents a specific functionality or feature that the system provides to its actors. Use cases are depicted as ovals on the diagram and are connected to actors to show the interactions. Association : Lines or connectors are used to illustrate the relationships or associations between actors and use cases. These lines show that an actor interacts with one or more use cases. System Boundary : A boundary or box around the use cases and actors is used to represent the system itself. It demarcates the system's scope and shows which elements are internal and external to the system.

3. Use Case Diagram for Online Library Management System

4. Use Case Diagram for Online Library Management System The actors used in the diagram are User Constraint checker Cash provider The Use cases used in the diagram are Insert ATM card Select language Enter pin Enter amount Provides cash Transaction status Notification