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composite primary key means?

 
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HARIBHARAT

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Joined: 05 Jul 2006
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Location: pune

PostPosted: Wed Sep 13, 2006 1:26 pm    Post subject: composite primary key means?
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composite primary key means how to utlise the database, iam not aware about that pls explain me.

Regards

suresg
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red_roses

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Joined: 31 Oct 2005
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PostPosted: Wed Sep 13, 2006 3:21 pm    Post subject:
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Composite primary key means a primary key that is made up of more than 1 column.

e.g. suppose I define two columns like dept id and emp id as the primary key.

so now the combination of the two values need to be unique.
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HARIBHARAT

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PostPosted: Wed Sep 13, 2006 3:35 pm    Post subject: Re: composite primary key means?
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Thans a lot.

Regards

suresh
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