Adding UI Components 
Purpose
When defining your UI logic, you define how the data is input to the data service and in what form the output from the data service is displayed to the user.
Process Flow
You can add a UI component to the iView by dragging-out from a data service port (input or output), and then choosing the appropriate UI element from the context menu that is displayed. The connection between the two objects is automatically created.
Alternatively, you can drag a UI element from the Elements task panel, and then manually define the required connection. This may be necessary if the element you want to add to your iView is not available in the context menu. Note, however, that in this case, you must also manually define the data mapping between the two elements.
See:
· Defining Input to the Data Service