12+ Sequence Diagram Multiple Actors. A lifeline with an entity element represents system data. In complex cases drawing multiple sequence diagrams without all those alternate or optional fragments might be easier for readers.
Each use case diagram (ucd) use case may be expanded into a sequence diagram (sqd) and/or a collaboration diagram (cod). Participants do not have to be explicitly declared. Here is an explanation with examples of how to implement this step.
They capture the interaction between objects in the context of a collaboration.
12+ Sequence Diagram Multiple Actors. Class diagrams, when used in conjunction with sequence diagrams, provide an extremely effective communication mechanism. An individual participant in the sequence diagram is represented by a lifeline. Class diagrams, when used in conjunction with sequence diagrams, provide an extremely effective communication mechanism. We can have multiple actors in a sequence diagram.