![UML Diagram Types | Learn About All 14 Types of UML Diagrams | Use case, Business case template, Project management templates UML Diagram Types | Learn About All 14 Types of UML Diagrams | Use case, Business case template, Project management templates](https://i.pinimg.com/originals/5f/0d/e0/5f0de0e75d1e544629b9496720d8d2b3.png)
UML Diagram Types | Learn About All 14 Types of UML Diagrams | Use case, Business case template, Project management templates
![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/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).
![Creately on Twitter: "Use Case Diagram Tutorial (Guide with Examples): A beginner's guide https://t.co/nnbiNnJCmE #usecase #diagramtypes https://t.co/cE43NWJZHI" / Twitter Creately on Twitter: "Use Case Diagram Tutorial (Guide with Examples): A beginner's guide https://t.co/nnbiNnJCmE #usecase #diagramtypes https://t.co/cE43NWJZHI" / Twitter](https://pbs.twimg.com/media/CgpX9auWYAAwrwb.png)