Table joins

Hello,

We read that it is possible to have joins on HANA level or in the Business Objects level. What are the advantages\disadvantages of having the joins in BO and not on HANA? . Does running a query above analytic view it use all the star schema joins or only the one used by the query? Is there a different in the way the query does the joins when running a query above analytic view and calculation view?

Thanks,

Amir