About CDC Changed Data Tables

In jobs that include changed data capture transformations, the source is a table that records changes to a database. Each row in the source changed data table records an insert, update, or delete action. Each row includes the data that was involved in the action.
The source changed data tables are generally created in native database format, using technologies that are provided by the database. The CDC transformations require certain columns in the source changed data tables. The names and order of the columns can vary. To identify the columns to the CDC transformations, you specify option values in properties window.
The CDC transformations generate target data that is suitable for loading into star schemas using the SCD Type 2 Loader transformation.