Answer / naresh

1)Its permitted to Perticular Database(like Oracle ,Sql
Server ,DB2 ..)so those function wil work until you are
using that databases ,

If you are using cognos functions even after you shifted to
another database also no need to change them.

2) Performance will be slow every time it will hit the
database and validate them ,so performance will be slow ,

If Cognos functions then once data extraction into buffer
area then it wil perform operations one time hitting of
database .

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6. Which of them will increase the performance?

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