11+ Sequence And Activity Diagrams. Uml sequence diagrams are interaction diagrams that detail how operations are carried out. A uml sequence diagram shows how messages go back and forth between objects over time.
Concept from www.uml2.org
They usually appear in pairs of sent and received signals, because the state can't change until a response is received, much like synchronous messages in a sequence diagram. This sequence diagram tutorial is to help you understand sequence diagrams better; Activity diagram is like a flow chart.
To explain everything you need to know, from how to draw a sequence.
11+ Sequence And Activity Diagrams. Both sequence and activity diagrams are used to represent the control flow of messages. They can be seen as 3.4.8 control power activity diagram. Activity diagrams give focus to the workflow, while sequence diagrams give focus to the handling of business entities. Sequence diagram is the most common kind of interaction diagram , which focuses on the sequence diagram describes an interaction by focusing on the sequence of messages that are exchanged, along with their corresponding occurrence specifications on the lifelines.
