Confused by the removal of aggregate/index tables in HANA

Hiya,

I've heard that HANA removes the need for aggregate and index tables like BSIS, BSAS, VRPMA etc.

Is HANA smart enough to do this? Or does Simple finance (sFIN) do this?

I mean if we were to replace our Oracle DB with HANA would the index tables no longer exist?

Or would we then need to implement simple finance to then remove the need for index tables?

Thanks in advance!