use case diagram

A Use Case Diagram is a visual tool that represents how different users, called "actors," interact with a system or application. It shows the various activities (use cases) that users can perform, such as logging in, purchasing an item, or retrieving information. By illustrating these interactions, the diagram helps developers and stakeholders understand the system's functionality and the relationships between users and their tasks. This clarity aids in designing user-friendly systems that meet specific needs and ensures that everyone involved has a clear picture of how the system should work.