Adding a Composite Reference
From a schema, you can add a composite reference that points to a dictionary. From a dictionary, you can add a composite reference that points to the current dictionary, or to another dictionary.
To add a composite reference
1. In Package Navigator view, double-click the flat file schema or flat file dictionary to which you want to add a composite reference. The schema or dictionary opens in the appropriate editor window.
2. In the Flat File Structure tab of the flat file schema editor, or in the flat file dictionary editor, select the record definition and click 
in the editor toolbar. (You can also right-click the element and select New.) 3. Select Composite Reference and click Next.
4. Navigate to the flat file dictionary in which the element is located, select the dictionary, and then click Next.
5. Select the element that you want to reference and then click Next.
7. Click Finish.