6/30/2023 0 Comments Draw sequence diagram![]() Call message is a kind of message that represents an invocation of operation of target lifeline.A message defines a particular communication between Lifelines of an Interaction.The top and the bottom of the of the rectangle are aligned with the initiation and the completion time respectively.A thin rectangle on a lifeline) represents the period during which an element is performing an operation.A lifeline represents an individual participant in the Interaction.A person may play the role of several different actors and, conversely, a given actor may be played by multiple different person.An actor does not necessarily represent a specific physical entity but merely a particular role of some entity.represent roles played by human users, external hardware, or other subjects. ![]()
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