The UML Diagrams

A diagram is the graphical presentation of a set of elements, most often rendered as a connected graph of vertices (elements) and arcs (relationships).

Use-Case Diagram

A use-case diagram shows a set of use cases and actors and their relationships. Use-case diagrams address the static use-case view of a system. These diagrams are especially important in organizing and modeling the behaviors of a system.

Figure 3-19 has actors Customer, Catalog System, Service Rep, and Warehouse. The Customer and Service Rep actors interact with the use-cases Browse Catalog, Search for Product, Create Customer Account, and Checkout. The Browse Catalog and Search for Product use cases retrieve or send information to the Catalog System actor. The ...

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