![]() It depicts the external view of the system.It represents how an entity from the external environment can interact with a part of the system.įollowing are the purposes of a use case diagram given below: It invokes persons, use cases, and several things that invoke the actors and elements accountable for the implementation of use case diagrams. ![]() It accumulates the system's requirement, which includes both internal as well as external influences. The main purpose of a use case diagram is to portray the dynamic aspect of a system. It depicts the high-level functionality of a system and also tells how the user handles a system. It models the tasks, services, and functions required by a system/subsystem of an application. It encapsulates the system's functionality by incorporating use cases, actors, and their relationships. ![]() A use case diagram is used to represent the dynamic behavior of a system.
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