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materialized views

All posts relating to Oracle PL/SQL development.

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coolboy98699
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materialized views

Postby coolboy98699 » Tue Jul 03, 2012 1:25 pm

Sir...i have a bit idea on materialized views...but i don't know the particular advantage to use that?.
In which case do we use them..

Many Thanks

Tim...
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Re: materialized views

Postby Tim... » Tue Jul 03, 2012 1:29 pm

Hi.

1) They are useful to copy remote data locally, improving the performance of queries that would otherwise have to use database links.
2) If you have lots of similar complex queries that perform aggregation of data, you may get benefits by using a materialized view to aggregate the data once, then have the queries posted against the ready prepared data.

Cheers

Tim...
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