A type relation is a model object that allows the creation of relations between elements. Type relations are given names to distinguish their role in the model. For instance, a type element ‘Action’ with a type relation ‘has responsible’ to the type element ‘Person’, a type element ‘Requirement’ with a type relation ‘has source’ to the type element ‘Document’, a type element ‘Requirement’ with a type relation ‘is scope of’ to the type element ‘ Verification’, or a type element ‘Requirement’ with a type relation ‘is stakeholder for’ to the type element ‘Requirement’.

Create a new type relation^*

1. In the workspace menu, click on  Type graphview.
2. In the model, click on the type element to which a new type relation should be added.
3. In the toolbox, click on  New type relation. As a result, the dialog New type relation is opened.
4. In the dialog New type relation, enter the settings of the type relation.
5. Click on Create. As a result, the dialog is closed, and the new type relation is created.

Note:

• By creating a type relation to its own element, a recursive relation is created. For example, a type element ‘Person’ with a type relation ‘has supervisor’  to type element ‘Person’.

Update a type relation^*

1. In the workspace menu, click on  Type graphview.
2. In the model, click on the type relation name.
3. In the toolbox, click on Edit. As a result, the dialog Type relation settings is opened.
4. In the dialog Type relation settings, enter the settings of the type relation.
5. Click on Update. As a result, the dialog is closed, and the type relation is updated.

Notes:

• Double-clicking the type relation is another way to open the dialog Type relation settings.
• As an alternative to the Type graphview, a type relation can be updated using the detail view.

Delete a type relation^*

1. In the workspace menu, click on  Type graphview.
2. In the model, click on the type relation name.
3. In the toolbox, click on  Delete.
4. In the dialog Delete type relation, click on Ok. As a result, the type relation is deleted and is no longer shown in the workspace.

Notes:

• As an alternative to the Type graphview, a type relation can be deleted using the detail view.
• A type relation cannot be undeleted. The existing relations between elements are deleted together with the type relation and cannot be restored.

* In the workspace, the user type of your user must be set to power user to enable this feature.