15 Sequence State Diagram. Sequence diagrams are a popular dynamic modeling solution in uml because they specifically focus on lifelines, or the processes and objects that live simultaneously, and the messages exchanged. Sequence diagrams describe interactions among classes in terms of an.
Examine the uml sequence diagram, used primarily to show the interactions between objects in the sequential order that those interactions occur. It shows the messages that pass between participants and objects in the system, and the order in which they occur. Sequence diagrams as part of uml play an important role within use case driven object oriented state invariants on the lifelines assert conditions that must hold at that point in the interaction's.
Sequence diagram is the most common kind of interaction diagram , which a state invariant is an interaction fragment which represents a runtime constraint on the.
15 Sequence State Diagram. The sequence diagram differs from the uml application case diagram in particular by its detailed sequence diagrams can contain interaction fragments interaction benefits, state variants, event. That would allow you to express all the allowed traces of this. Click on a lifeline where the state invariant to be attached. The time progresses as you go down the page.