CA ERwin Data Modeler r8 New Feature Guided Tours › Spell Checker, History, Notes, Printing, Transforms, Link Objects, and Navigation › Creating and Working with Link Objects

Creating and Working with Link Objects

Use the following steps to become familiar with creating and working with Link objects.

1. Open an existing model, or create a new one with some entities and attributes. Select an attribute in one of the entities and launch the Attribute Editor.
2. Click the Link tab and click the New icon on the toolbar to launch the Link Wizard.
3. Read the information in the Overview page to understand the process of using the Link Wizard.
4. Click the Link page from the list on the left side. Provide a Name and Definition for the Link Object created. Select the Synchronization Direction property as Two Way.
5. Click the Target page from the list on the left side. Select the Target Owner Table and the Target Column for the link object. You can also create a new target column in the target table selected.
6. Click the Properties page from the list on the left side. By default all of the properties are selected to synchronize between the two attributes. Click the button on the toolbar to unselect all of the items in the list, and select the properties that you would like to be synchronized. Save your selections as a new Option Set.
7. Click the Apply button to close the wizard and return to the Attribute Editor that now contains the Link object details for that attribute. Close the Attribute Editor.
8. Make some changes to the Properties of the source column, and verify that the changes are reflected in the properties of the target column. Similarly make some changes to the Properties of the target column, and verify that the changes are reflected in the properties of the source column. Close the model.