Package is used to group elements, and to provide a namespace for the grouped elements. Use cases are a set of actions, services, and functions that the system needs to perform. Use case and activity diagrams modeling notation 1. Pdf introduction to case management model and notation. Use case is a list of steps, typically defining interactions between an actor and a system, to achieve a goal. Usecases are one of the core concepts of objectoriented modeling. Careful modeling is crucial in obtaining a correct and efficient system. Anwendungsfalldiagramm use case diagram enterprise architect. Here is a list of unified modeling language uml notations supported in a uml use case diagram.
Pdf use case diagrams play an important role in modeling with uml. Use case diagrams model the functionality of a system using actors and use cases. The actor is an entity that interacts with the system. Use case diagrams use case diagrams online, examples. Pdf formal analysis of use case diagrams researchgate. They are used to represent highlevel functionalities and how the user will handle the system. Use case diagrams as discussed in the previous chapters, textual requirements are an easy speci. Use case diagram notations guide use case diagram is a kind of uml diagram. A use case describes an interaction scenario and its possible alternatives.
Use case modeling with activity and use case diagrams an environment discipline june 8, 2009. The chapter describes basic uml notations in detail. Uml tutorial use case, activity, class and sequence. Actor specifies a role played by a user or any other system that interacts with the subject. Doubleclick the use case and the properties editor dialog box opens. A uml use case diagram showing airline ticket reservation system. It compares sequence diagrams in order to define sequencediagram relationships for identifying and defining usecase relationships.
Deselect the use case symbol icon by clicking the cursor icon located above the use case diagram palette or press the esc key. You can edit this uml use case diagram using creately diagramming tool and include in your reportpresentationwebsite. This specification defines a common metamodel and notation for modeling and graphically expressing a case, as well as an interchange format for exchanging case models among different tools. Uml diagrams are made using the notations of things and relationships. We examined selfgenerated productions in the domains of. Predrawn uml use case diagram symbols represent actor, use case, package, object, interface, constraint and note, etc.
Extensibility is another important feature which makes uml more powerful and flexible. Start with a usecase and elaborate it into activity, class, sequence, and communication diagrams. A user placing an order with a sales company might follow these steps. Uml use case diagram symbols uml use case diagram shapes. In this context, a system is something being developed or operated, such as a web site. Airline ticket reservation system use case diagram uml. Case plan model all information, or references to information, that is required as context for managing a case, is defined by exactly one case file.
A use case diagram is a dynamic or behavior diagram in uml. A use case represents a user goal that can be achieved by accessing the system or software application. This is just an extension to the uml building block section discussed in chapter two. Click once to select the use case that is to become the withdraw cash from atm. Use case diagrams are defined as diagrams that capture the systems functionality and requirements in uml. About the case management model and notation specification. Pdf describing usecase relationships with sequence diagrams.