Use case diagrams can also be used to document the functionality of an existing system and define which users are permitted to use which functionalities retrospectively. ![]() Use case diagrams are applied during the analysis and design process as a way to describe the requirements of the customer and what the future system is for. While it depicts what a system should do and which user of the system uses which functionality, it doesn’t address any realization details such as data structures, algorithms, etc. In simpler words it depicts how a possible user would interact with the system. More Templates What Is a Use Case Diagram?Ī use case diagram is a type of UML diagram that is used to describe the possible usage scenario that a system is developed for.
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