UML Sequence Diagram: An Alternative Model

The UML sequence diagram is the second most common that represents how objects interact and exchange messages over time. Sequence diagrams show events or activities in a use case are mapped into operations of object classes class diagram. general acceptance can be attributed to their relatively intuitive nature ability describe partial behaviors (as opposed such as state charts). However, studies have shown 80% graduating students were unable create software design even design, many had no idea constrained by other models. Many exhibited difficulties identifying valid interacting constructing with appropriate arguments. Additionally, according authorities, though different semantics been proposed for (e.g., translations machines), there exists suitable semantic basis refinement required behavior because direct style do not precisely capture behaviors; formalisms disregard essential features guard conditions critical regions. This paper proposes an alternative diagrams, generalized model provides further understanding assimilate them new modeling language called thinging machine (TM). extended horizontally removing superficial vertical-only dimensional limitation expansion preserve logical chronology events. TM diagramming spread nonlinearly terms actions. Events constructed on plane description superimposed initial static description. result more refined representation would simplify process. demonstrated through remodeling cases from literature.