V1 V2 and V3 update

Hello,

As i know -

V1 - is used for update the application table.

V2 - ?

V3 - For update the update table , if V3 unserialized update mode is selected for data source.

- which table get updates in V2 .

- Also except above mentioned table is there any other tables in R/3 or in BI system which will get update during this.

Thanks

Ashwani