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unique identifier.. [message #337173]

Wed, 30 July 2008 01:45

arunshrish
Messages: 74
Registered: May 2008
Location: Chennai

Member

Hi all can any one explain me about Unique identifier and its use??

Thanks,
Arun.

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Re: unique identifier.. [message #337184 is a reply to message #337173]

Wed, 30 July 2008 02:08

Littlefoot
Messages: 21825
Registered: June 2005
Location: Croatia, Europe

Senior Member
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Identifiers? Or would you like to know more about (unique) constraints (found in Data Integrity chapter of the Concepts book)?

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Re: unique identifier.. [message #337188 is a reply to message #337184]

Wed, 30 July 2008 02:18

arunshrish
Messages: 74
Registered: May 2008
Location: Chennai

Member

Hi Little foot ,thanks for reply. I just wanted to know differnce between unique constraint and a unique identifier.Actually i heard that it is somewhat similar to a constraint thats why i asked about it.

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