Use Case Diagram

Definition

A use case diagram is a visual representation that illustrates the interactions between actors (users or external systems) and a system in terms of the specific tasks they perform.

Related terms

Actor: An actor represents any user or external system interacting with the system being developed.

System:

The system refers to the software or application being developed, which provides specific functionality to users or external systems.

Use Case: A use case represents a specific interaction between an actor and the system, describing how they work together to achieve a particular goal.