Answer Posted / sd. abdul rawoof
hi frd aggregate means 1 st say all people improve the query performance.
1. query send request to olap cache, olap cache send request to Ic (data base table)
2. Ic retrieve the data into olap & olap send data into query.
imp: query send request & receive data is called front end time
ic receive request & retrieve data is called db time
processing the data is called olap time.
selected records means sending records db to olap
transfer records means sending olap to query.
Dis Advantage:-
decrease the loading performance.
redundancy of data (data loading one ic to another)
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