difference between top down(w.h inmon)and bottom up(ralph
kimball)approach?
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Hi,
Top Down approach:-
As per W.H.INWON, first we need to build the Datawarehouse after that we need to build up the DataMart but this is so what difficult to maintain the DWH.
Bottom up approach;-
As per Ralph Kimbal, first we need to build up the DataMarts then we need to build up the Datawarehouse ..
this approach is most useful in real time while creating the Datawarehouse.
As per my knowledge i am giving this answer..
Let me know it is corrector not...
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