The following figure shows a mapping that the Remove Duplicates Mapping Templates Wizard creates when you select the Remove Duplicates option:
The Remove Duplicates Dimension mapping uses the Sorter transformation, SRT_GetData, to sort the data. The Aggregator transformation, AGG_RemoveDuplicateRecords, removes the duplicate records and passes only one version of the data to the target table.
You can create the following transformations by using the Remove Duplicates Mapping template: