Using Textual Rules

Textual Rules are used for mapping source elements, mapping functions or constants to target elements, by defining the elements in syntax form. 

Steps to map elements using the Concat function using Textual Rules

1. Ensure that the source and target schemas are loaded and all their elements are listed under their respective nodes.
2. Select the target element that you want to map. It is displayed in the Mapping Graph Area.
3. Click the Textual Rules tab in the Mapping Graph Area.

4. Click String mapping function and select Concat sub-function. The syntax for the Concat sub-function is displayed in the Mapping Graph Area (see Figure 507).

   

   Figure 507: Syntax for Concat Sub-Function

5. This syntax has two parameters. Double-click a source element that you want to set as the first parameter. This displays the selected source element in the syntax.
   Similarly, double-click another source element as the second parameter. This is displayed in the syntax (see Figure 508).
   
   

   Figure 508: Parameters of the Concat Syntax

    

   You can indent the textual rule content as per your requirement.

6. Click the Apply Mapping (  ) button. This maps elements using the concat sub-function. A line is displayed between the source and target panels showing the mapping of the source element to the target element