Create a class key

Class keys must be unique within an object class. You cannot create a key that duplicates existing public or preconfigured key of the same type for the same object class. Two class keys are identical if the values for their attributes Properties, Unique and Strict Null Handling are identical.

  1. In the Meta-Model tab of Alfabet Expand, right-click the protected or custom object class that you want to create the class key for and select Add New Class Key. You will see the Class Key Group folder and the new class key subordinate to the selected object class.
  2. Click the new class key and edit the attributes:
    • Name: Change the default name to a meaningful value.
    • Properties: Open the editor and select all properties that shall be included in the index.
    • Unique: Set to False.
  3. In the toolbar, click the Save  Save_Expand button to save your changes.

To delete all protected and custom class keys that have been configured for a protected or custom object class, click the Class Key Group node below the relevant object class and select Delete All Public/Protected Class Keys. The protected and public class keys will be deleted and no longer displayed below the Class Key Group node. Private class keys that have been configured by Alfabet BD GmbH will not be deleted.