Sequence diagram online visual paradigm8/16/2023 It represents the period during which an element is performing an operation.It shows as tall, thin rectangle on a lifeline).Focus of control: also called execution occurrence, an execution occurrence.An Event is any point in an interaction where something occurs.A comment carries no semantic force, but may contain information that is useful to a modeler. Duration message shows the distance between two time instants for a message invocation.Ī note (comment) gives the ability to attach various remarks to elements.Destroy message is a kind of message that represents the request of destroying the lifecycle of target lifeline.Create message is a kind of message that represents the instantiation of (target) lifeline.It's target points to an activation on top of the activation where the message was invoked from. Recursive message is a kind of message that represents the invocation of message of the same lifeline. ![]() Self message is a kind of message that represents the invocation of message of the same lifeline.Return message is a kind of message that represents the pass of information back to the caller of a corresponded former message. ![]() 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. ![]()
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