Hi,
Transnational data stored in SAP BI in column and row format cube.
You can see using RSA1 T-code in BI system, BPC related cubes will display and right click on cube and display data you can see the data.
By using data manger package you can load the data to BPC, data manger contains BI – BPC process chain.
Write back tables data comes for analysis aggregated to the parents.
Hope this will help you.
Regards,
Devi