What is ref in sequence diagram?

What is ref in sequence diagram?

ref Reference: refers to an interaction defined on another diagram. The frame is drawn to cover the lifelines involved in the interaction. You can define parameters and a return value.

What is a sequence diagram in UML?

A sequence diagram is a Unified Modeling Language (UML) diagram that illustrates the sequence of messages between objects in an interaction. A sequence diagram shows the sequence of messages passed between objects. Sequence diagrams can also show the control structures between objects.

What is lifeline OOSE?

Lifelines. A lifeline represents an individual participant in a sequence diagram. A lifeline will usually have a rectangle containing its object name. Sometimes a sequence diagram will have a lifeline with an actor element symbol at its head. This will usually be the case if the sequence diagram is owned by a use case.

What is ref in UML?

To reference other interactions in a UML sequence diagram, interaction uses can be used. It is shown in the sequence diagram as a fragment with the operator ref to indicate the reference to another interaction.

How do you create a Sequence diagram?

Creating sequence diagram

  1. Select Diagram > New from the application toolbar.
  2. In the New Diagram window, select Sequence Diagram.
  3. Click Next.
  4. Enter the diagram name and description. The Location field enables you to select a model to store the diagram.
  5. Click OK.

What is the sequence diagram in Enterprise Architect?

Please note : This help page is not for the latest version of Enterprise Architect. The latest help can be found here. The Sequence diagram is one of the Unified Modeling Language (UML) Behavioral diagrams that can be used to define the time ordered flow of messages between elements.

What is sequence diagram in UML?

The Sequence diagram is one of the Unified Modeling Language (UML) Behavioral diagrams that can be used to define the time ordered flow of messages between elements. They can be used by business and technical users but are more commonly used for technical descriptions of a system.

How do I generate sequence diagrams?

You generate Sequence diagram elements and connectors from the ‘Interaction’ pages of the Toolbox. This example Sequence diagram demonstrates several different elements. An Actor is a user of the system; user can mean a human user, a machine, or even another system or subsystem in the model.

What is an actor in a sequence diagram?

This example Sequence diagram demonstrates several different elements. An Actor is a user of the system; user can mean a human user, a machine, or even another system or subsystem in the model. A Lifeline represents a distinct connectable element and is an individual participant in an interaction.

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