15 Use Case Diagram Relationships. A use case diagram illustrates a set of use cases for a system, i.e. Both beginners and intermediate uml diagrammers will find all the necessary training and this tutorial explains the four main characteristics of use case diagrams:
E.g., login uc includes user authentication uc). A relationship between two use cases is basically modeling the dependency between the two use cases. It describes the relationships between requirements, users, and the extended use case is at the arrowhead end.
Notice that all these terms are action verbs.
15 Use Case Diagram Relationships. These requirements are mostly design requirements. Uml 2 use case diagrams overview the usage requirements for a system. So go ahead and check out use case diagram guidelines. In addition to introducing use cases as primary elements in software development, jacobson (1994) also introduced a diagram for visualizing use when i'm working with actors and use cases, i don't worry too much about what the exact relationships are among them.