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Use Case Diagram

A use case diagram can describe the specifics of your system's users (also known as actors) and their interactions with the system in the Unified Modeling Language (UML). You'll need a collection of specific symbols and connections to construct one. The primary form of system/software requirements for an undeveloped software application is a UML use case diagram. The intended behavior (what) is specified in use cases, not the actual technique of achieving it (how). Once defined, use cases can be represented both textually and visually (i.e. use case diagram). A major notion in use case modeling is that it assists us in designing a system from the standpoint of the end-user. It's a good way to communicate system behavior to users in their own words by defining every externally apparent system activity.

The modeling tool that you may use to create your diagrams is called UML. A named oval shape is used to illustrate use scenarios. The actors in the process are represented by stick figures, and the actor's engagement in the system is portrayed by a line connecting the actor and the use case. Draw a box around the use case to represent the system boundary.

A use case diagram doesn't go into great detail—don't expect it to depict the sequence in which activities are carried out, for example. A suitable use case diagram, on the other hand, provides a high-level picture of the link between use cases, actors, and systems. Use case visuals, according to experts, should be used to augment a more descriptive written use case. The modeling tool that you may use to create your diagrams is called UML. A named oval shape is used to illustrate use scenarios. The actors in the process are represented by stick figures, and the actor's engagement in the system is portrayed by a line connecting the actor and the use case. Draw a box around the use case to represent the system boundary.