![Use case diagrams are UML diagrams describing units of useful functionality (use cases) performed by a system in collaboration with external users (actors). Use case diagrams are UML diagrams describing units of useful functionality (use cases) performed by a system in collaboration with external users (actors).](https://www.uml-diagrams.org/use-case-diagrams/business-use-case-diagram-elements.png)
Use case diagrams are UML diagrams describing units of useful functionality (use cases) performed by a system in collaboration with external users (actors).
![Use Case Diagram Tutorial ( Guide with Examples ) - Creately Blog | Use case, Sequence diagram, Diagram Use Case Diagram Tutorial ( Guide with Examples ) - Creately Blog | Use case, Sequence diagram, Diagram](https://i.pinimg.com/originals/5a/ee/f9/5aeef9fbbc598f2f37978b4458ff3ec0.png)
Use Case Diagram Tutorial ( Guide with Examples ) - Creately Blog | Use case, Sequence diagram, Diagram
Use case Diagram: The main users of the system are nurses and medical... | Download Scientific Diagram
![Use case diagram where actions are going through a third party system - Software Engineering Stack Exchange Use case diagram where actions are going through a third party system - Software Engineering Stack Exchange](https://i.stack.imgur.com/ZGVs0.png)