Unified Modified Language (UML) is a modeling language standard for identifying, recording and designing a software. Reusing UML diagrams can help to accelerate the software development process.

In this paper, we present the formal semantics of sequence diagrams. The semantics of a sequence diagram is interpreted as a consecutive execution of steps in UTP. The semantics clearly captures the ...

It includes functional and non-functional requirements, use case diagrams, class diagrams, activity diagrams, and sequence diagrams. A prototype application is also developed based on selected ...