Use Case Diagram - Unified Modeling Language (UML) What is a Use Case Diagram in UML? A Use Case Diagram is a type of Unified Modeling Language (UML) diagram that represents the interaction between actors (users or external systems) and a system under consideration to accomplish specific goals
What is Use Case Diagram? - Visual Paradigm So what is a use case diagram? A UML use case diagram is the primary form of system software requirements for a new software program underdeveloped Use cases specify the expected behavior (what), and not the exact method of making it happen (how)
UML Use Case Diagram Tutorial - Lucidchart The notation for a use case diagram is pretty straightforward and doesn't involve as many types of symbols as other UML diagrams You can use this guide to learn how to draw a use case diagram if you need a refresher