What are the different types IKM Knowledge Module?

What are the different types IKM Knowledge Module?

1)     Append: Insert records from the flow into the target. It is possible to optionally delete all records from the target before the insert. Existing records are not updated.

      Using options like  TRUNCATE or DELETE_ALL =ture

2)     Control Append: Same as above, but in addition the data flow is checked in the process.

3)    Incremental Update: Same as above. In addition, it is possible to update existing records with data from the flow.

4)     Slowly Changing Dimension: Integrate data into a table using Type 2 slowly changing dimensions (SCD).