Ternary role (dictionary item)

Model Parts, Diagrams, Dictionary Items, and Properties > Dictionary items > Ternary role (dictionary item)

For automation interface information about a Ternary Role, see Ternary role (automation interface).

A Ternary Role links a Ternary Association with a Class, Data Type, Interface or Signal, and specifies the multiplicity of the relationship at the Class, Data Type, Interface or Signal end.

You can create a Ternary Role through the Class Diagram. You create a Ternary Role in the same way as you create an Association; however, when you attempt to add an Association that links a Ternary Association and a Class, Data Type, Interface or Signal, Modeler creates a Ternary Role.

When used on a diagram, a Ternary Role's notation is as follows:

	Ternary Role and name
	Multiplicity of zero or one.
	Multiplicity of zero or more.
	Multiplicity of only one.
	Multiplicity of one or more.
	Multiplicity of tbd (to be decided)
	User defined multiplicity, in this case 63.

In the Modeler panes, a short-cut symbol

on the Ternary Role's icon indicates that the item is a stub.

If you select the UML\Ternary Roles folder in the Dictionary pane, the Contents pane displays the following information about each Ternary Role in the model: Ternary Association.

The following sections provide information about how a Ternary Role is used in the model. For more information about a property, item, model part or diagram, click it.

Properties

In addition to the standard properties, a Ternary Role has these properties:

• Multiplicity (Multiplicity Text through the automation interface)

Owned by

A Ternary Role is owned jointly by the Ternary Association and the Class, Data Type, Interface or Signal it is associated with.

Owns

Comment

Constraint

Dependency — The Dependency is owned jointly by the Ternary Role and the other associated item. The access permissions you have to a Dependency are determined by the access permissions of the dependent item.

Defined in these parts of the model

Class Model

Shown on these diagrams

Class Diagram

Variant Diagram

Can be linked to these dictionary items

Stereotype

Like most other items in a Model, a Ternary Role can be linked to an Activity Partition, Comment, Frame Box, General Node, General Flow, General Flow Diagram Node, Constraint (applied), General Flow Diagram Flow or Swimlane.