Answer:
In data Warehouse when u change + symbol to - , u would c all the aggregation level in that + this is called rolling down.
So if u again click over that - it would again compressed back to +. This is call drill up.
your Aggregation levels woudl b like
Year>Month>Week>Day>Hour>Minutes>Seconds.
So by changing the symbol from - to + at month aggregation level u can drill up.
So if u again click over that - it would again compressed back to +. This is call drill up.
your Aggregation levels woudl b like
Year>Month>Week>Day>Hour>Minutes>Seconds.
So by changing the symbol from - to + at month aggregation level u can drill up.
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