We here propose a structured-expandable format of a use case, which is expressed in Z notation and then represented visually using an Entity-Relationship diagram. Implementation of our approach would ...

Use case diagrams are a type of UML (Unified Modeling Language) ... You can use a simple notation to draw your diagram, using ovals for use cases, rectangles for actors, ...

Use Case Diagrams Use case diagrams describe a set of actions (called use cases) that a system should or can perform in collaboration with one or more external users of the system (called actors).

This article, which aims to introduce the basics of UML notation, is the second in a series of four devoted to modeling. The first article [H 3 885] introduces SysML. The following articles describe a ...

With the growing use of UML diagrams for software description and the importance of non-functional requirements evaluation at software design level, transforming these diagrams to executable models is ...

One of the main issues we have is that not all developers have knowledge of the UML notation. Therefore, the diagrams are sometimes not UML-compliant. ... After having used UML based CASE tools for ...

Use case diagrams are a type of UML (Unified Modeling Language) diagram that show the actors, use cases, and relationships of a system. Actors are the external entities that interact with the ...