Staging area and target area

hi..friends.
should staging area and target area be same or different???
if same what are the advantages and dis-advantages???
and if not same what are the advantages and dis-advantages????
I want your help..
Thanks.

Staging area is the place where transformation takes place.
Basically c$,I$ tables gets created at this place and once processing is done , the same gets dropped .
By defalut staging area and traget area are the same . But most of the DBA does not like to have the temp tables created at the target as this cause dbms performance, maintance issue in long term.
Instead you can have a dedicated schema created just for staging and use the same in your interface.
Plus when your target is non dbms then you need to go for a dedicated staging area which can be a separate schema in your database or it could be in memory schema. You will find performance issue if you are using in memory schema as your staging area in case the data volume increase.
Thanks,
Sutirtha

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Hi SRK
I think you'll find your answer in this old white paper from oracle. The new version of the best practices are much smaller :/.
http://www.oracle.com/technetwork/middleware/data-integrator/overview/odi-bestpractices-datawarehouse-whi-129686.pdf
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Message was edited by: Amit Mittal

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