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Doubt in constraints [message #85558] Thu, 08 July 2004 07:06 Go to next message
uma
Messages: 67
Registered: May 2001
Member
primary key constraint can be achieved by using unique,not null constraints combintion..Is there any benifit using primary key instead of this combination(uniquw+not null)

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Re: Doubt in constraints [message #85564 is a reply to message #85558] Thu, 08 July 2004 07:53 Go to previous message
vamsi kasina
Messages: 2112
Registered: October 2003
Location: Cincinnati, OH
Senior Member
hi uma,
i think u forgot index...

by
vamsi

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