Create Message Sequence Diagram

Posted : admin On 1/26/2022
Create Message Sequence Diagram
Notation DescriptionVisual Representation

Actor

  • a type of role played by an entity that interacts with the subject (e.g., by exchanging signals and data)
  • external to the subject (i.e., in the sense that an instance of an actor is not a part of the instance of its corresponding subject).
  • represent roles played by human users, external hardware, or other subjects.

Note that:

  • An actor does not necessarily represent a specific physical entity but merely a particular role of some entity
  • A person may play the role of several different actors and, conversely, a given actor may be played by multiple different person.

Lifeline

  • A lifeline represents an individual participant in the Interaction.

Activations

  • A thin rectangle on a lifeline) represents the period during which an element is performing an operation.
  • The top and the bottom of the of the rectangle are aligned with the initiation and the completion time respectively

Call Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Call message is a kind of message that represents an invocation of operation of target lifeline.

Return Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Return message is a kind of message that represents the pass of information back to the caller of a corresponded former message.

Self Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Self message is a kind of message that represents the invocation of message of the same lifeline.

Recursive Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Recursive message is a kind of message that represents the invocation of message of the same lifeline. It's target points to an activation on top of the activation where the message was invoked from.

Create Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Create message is a kind of message that represents the instantiation of (target) lifeline.

Destroy Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Destroy message is a kind of message that represents the request of destroying the lifecycle of target lifeline.

Duration Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Duration message shows the distance between two time instants for a message invocation.

Note

A note (comment) gives the ability to attach various remarks to elements. A comment carries no semantic force, but may contain information that is useful to a modeler.

Create Message Sequence DiagramCreate Message Sequence DiagramCreate Message Sequence Diagram

Sequence Diagram Template

Create Message Sequence Diagram

Create Message Sequence Diagram

Just follow these steps: Open a blank document or start with a template. To the left of the editor, click 'Shapes' to open the Shape Library Manager. Check 'UML' to enable all of the UML shape libraries or 'UML' to enable shapes specific to UML sequence diagrams. The sequence diagram represents the flow of messages in the system and is also termed as an event diagram. It helps in envisioning several dynamic scenarios. It portrays the communication between any two lifelines as a time-ordered sequence of events, such that these lifelines took part at the run time. SequenceDiagram.org is an online tool / software for creating UML sequence diagrams. Founded in 2014 with the purpose to improve the efficiency when creating and working with sequence diagrams by combining text notation scripting and drawing by clicking and dragging in the same model.