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 ...

A sequence diagram is a modeling approach for visualizing the behavioral execution of a system. The objective of this research is to investigate the problem of security in a behavioral model (sequence ...

Existing UML and Database diagrams can be opened in the new Visio, but they are effectively frozen for editing since the previous feature set has been removed. The behavior of existing diagrams is ...