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11+ Sequence Diagram Line Types

11+ Sequence Diagram Line Types. Again, a name and/or type can be specified. Learn about sequence diagram notations and messages.

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In a sequence diagram, different types of messages and operators are used which are described above. Time is depicted linearly, moving downwards. The basic syntax for a line in a sequence diagram shows that one participant is sending a message to another participant words about what participants are in general.

A sequence diagram is a type of interaction diagram because it describes how—and in what order—a group of objects works together.

11+ Sequence Diagram Line Types. This dashed vertical line shows the sequential events that occur to an object during the charted process. A sequence diagram shows object interactions arranged in time sequence. The dashed lines hanging from the boxes are called object lifelines, representing the life span of the object during the scenario being modeled. Sequence diagrams support logical analysis for parts of systems.

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