Creating Sequence Diagrams

A sequence diagram view shows the interactions between the different entities of a system.

This task shows you how to:

Create a Sequence Diagram

You can create a sequence diagram view for a function or a logical component, and insert it in a sheet.

  1. From the tree, select a function or a logical component.

    Tip: You can also select an existing sheet, if any.

    If the selected function or logical component does not contain any sheet, a new sheet is created to insert the sequence diagram view.

  2. From the Sequence Diagram section of the action bar, click Create Sequence Diagram .
    The Sequence Diagram dialog box appears.
  3. In the Sequence Diagram dialog box:
    1. In the Title box, enter the title to be displayed in the tree and in the 2D representation.

      Note: The Name box displays the non-editable and unique key server identifier.

    2. Optional: Enter a description.
  4. Click OK.
    The Sequence Diagram dialog box closes and a sequence diagram element follows your pointer.
  5. To position the sequence diagram in view, click the view at the convenient place.

Create a Sequence Diagram from Another Sequence Diagram

You can create a sequence diagram from another functional or logical sequence diagram.

Before you begin: For the purpose of this scenario:
  • Create a sequence diagram under the Logical node.
  • Create a logical model under the Logical node.
  1. From the Sequence Diagram section of the action bar, select Initialize Sequence Diagram from Another Sequence Diagram .
  2. Select the existing sequence diagram and select the logical reference.
  3. In the Sequence Diagram Mapping dialog box, review mappings for the actors, flows and messages.
  4. In the Sheet dialog box, enter a name for the sheet that will contain the sequence diagram.
  5. In the Sequence Diagram dialog box, enter a name for the sequence diagram.
    The second diagram is initialized from the first one.

Create a Sequence Diagram from a Use Case

You can initialize of a sequence diagram from a use case.

Note: The sequence diagram can only be created under the Functional node.

Before you begin:
  • Create a use case diagram.
  • Under the Functional node, create a function reference.
  1. In the tree, double-click the use case diagram.
  2. In the use case diagram, right-click a use case element and select Initialize Sequence Diagram.
  3. Select the function reference.
  4. In the Sequence Diagram dialog box, enter a name for the sequence diagram.
    A sequence diagram is created. It contains the selected use case and the associated components.