How can CDC improve the performance of Database Diff Processor when used in conjunction?

A CDC file acts as a filter that puts on a date stamp on the incoming records so that when the records are updated again, it sends only the updated or inserted records to the Database Diff Processor. In other words, it will only pass those records where the date is greater than that of records already stored in the CDC file. This way, the Diff Processor only needs to identify the inserted or updated records for synchronization. Thus, resulting in improved performance.