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Query on Primary key

 
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sreenigacc

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Joined: 16 Oct 2007
Posts: 15
Location: bangalore

PostPosted: Tue May 06, 2008 8:47 pm    Post subject: Query on Primary key
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Hi,

I have a query on primary key. I have a table, which is having more than one primary key.

I mean there are 4 columns with primary key out of 76 columns in the table.

in that four columns any column can have the same data multiple times, but if we combine all these 4 columns then the data will be unique.

If it is the case, what we call this group of columns.

thanks in advance
sreenivasulu G
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Gnanas N

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Joined: 06 Sep 2007
Posts: 788
Location: Chennai, India

PostPosted: Tue May 06, 2008 9:04 pm    Post subject:
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Composite primary key!
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guptae

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Joined: 14 Oct 2005
Posts: 1187
Location: Bangalore,India

PostPosted: Tue May 06, 2008 9:15 pm    Post subject:
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Hello Sreeni,

Its known as COMPOSIT PRIMARY KEY.
please read the manual befor posting .
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