13+ Use Case Diagram Model. A use case diagram acts as a focus for the description of user requirements. Use case diagrams consists of actors, use cases and their relationships.
Information flow can be modeled using uml activity diagrams. A use case diagram doesn't go into a lot of detail—for example, don't expect it to model the order in which steps are performed. Use case diagram is a behavioral uml diagram type and frequently used to analyze various systems.
Both beginners and intermediate uml diagrammers will find all the necessary training and examples on.
13+ Use Case Diagram Model. However, use case diagrams don't model this sort of information. A use case diagram doesn't go into a lot of detail—for example, don't expect it to model the order in which steps are performed. The diagram is used to model the system/subsystem of an application. It does not describe the requirements in detail;