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shashikant


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structural difference between bitmap and btree index ?

Infosys,

1 Oracle General 12053



Answers / { shashikant }

Question { 5007 }

Explain the difference between a hot backup and a cold
backup and the benefits associated with each


Answer

Hot Backup
taking backup, When the database is up & Running
making database in archivelog mode ,
using the command like alter database begin backup

Cold Backup
taking backup when is database is off.



Is This Answer Correct ?    2 Yes 0 No

Question { 35968 }

what is difference between where clause and having clause?


Answer

in 'where' clause every records filtered based on where
in 'having' is with aggregate records (group by functions )

Is This Answer Correct ?    44 Yes 5 No