Hi,
compression - on the cube performed the compression data moves form F fact table to E fact table.
- it will improve the memory sapce and increase the loading performence.
aggrgation - info cube is the aggregation propartiy and it will give the total aggrteated values.
ex- we have 1 customer - he did 10 transactions with diffrent dates.
final out put will give the 10 transaction for the particular custoemer.
Aggreagtes - will create the aggregates improve the loading performence.
if you create the aggregates first data in the cube after performing the roll up date moves to infocube to aggregates.
go to the cube -> mange -> select maintain arregates.
Thanks,
Phani.