To Create a Relation Map Operator

1. Drag a Relation Map operator from the Palette to the Design view.

2. Connect at least two inputs to the Relation Map operator.

3. Double-click the Relation Map operator.

   The property editor opens.

4. In the Expression box, enter the expression for the SQL SELECT statement. Add attribute names, data types and sizes, as applicable. Add, delete, or move attributes.

5. In the From field, define the input on which to perform the selection.

6. In the Where clause field, provide additional search criteria.

7. Click OK.