Configure Input/Output Files
At his stage, the mapping has two source components (Books and Library) and one target component (Library). Now we have two components with the same name - Library. To avoid confusion, we need to change the settings in the Component Settings dialog box. Double-click the header of each component. Then verify and change the name and the input/output files of each component as shown below.
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As shown above, the first source component reads data from Books.xml. The second source component reads data from Library.xml. Finally, the target component outputs data to a file called MergedLibrary.xml.