From: | woodb(at)niwa(dot)co(dot)nz |
---|---|
To: | "Postgres General" <pgsql-general(at)postgresql(dot)org> |
Cc: | "Ashish Karalkar" <ashish(dot)karalkar(at)info-spectrum(dot)com> |
Subject: | Re: Views- Advantages and Disadvantages |
Date: | 2007-05-09 07:54:01 |
Message-ID: | 61792.203.97.249.147.1178697241.squirrel@secure.niwa.co.nz |
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Lists: | pgsql-general |
> On 5/9/07, Ashish Karalkar <ashish(dot)karalkar(at)info-spectrum(dot)com> wrote:
>
> Hello All,
> Can anybody please point me to Advantages and Disadvantages
> of using view
Hi Ashish,
There are several, but they are generally about implementing a more user
friendly database from a well normalised structure.
You can use views to do any or all of:
act as a filter on fields or records which can be accessed by given users,
act as a stored query to avoid writing a commonly used SQL,
aggregate normalised tables into a single virtual table, so that access
does not require as complex a join, thus it can hide the complexity of the
database structure from applications or users.
An example use is to have a view which provides only the current version
of data from a database which stores multiple versions of the data.
Cheers,
Brent Wood
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