Chapter 3 Building Conceptual Data Models

Modifying a relationship graphically

From the CDM graphic, you can modify a relationship as follows:

To bend a relationship symbol:

1. Press ctrl while you click a point on the relationship to insert an angle.
   
   The point becomes a handle.
2. Release ctrl.
3. Drag and drop the handle to create the bend.

To straighten a relationship symbol:

1. Click a relationship symbol that has angles.
   
   Handles appear on the relationship symbol.
2. Press ctrl while you click a handle.
   
   The handle and its angle disappear.

To drag a relationship to a different entity:

1. Click a relationship and drag one of its attach points to a different entity.

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