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Use case diagrams are UML diagrams describing units of useful functionality (use cases) performed by a system in collaboration with external users (actors).
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UML Diagram Types With Examples for Each Type of UML Diagrams | Use case, Business case template, Business template
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Online UML Diagram Design,Use Case Diagram,Online Drawing | Freedgo Design:Focus on online drawing tools and ER model design
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Applied Sciences | Free Full-Text | Extending Drag-and-Drop Actions-Based Model-to-Model Transformations with Natural Language Processing | HTML
![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)