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Primary key and unique+not null [message #384792] Thu, 05 February 2009 04:04 Go to next message
ramesh55.sse
Messages: 262
Registered: December 2008
Location: Hyderabad
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Is primary key = unique key+not null? If yes,please explain IF No,please explain
Re: Primary key and unique+not null [message #384795 is a reply to message #384792] Thu, 05 February 2009 04:09 Go to previous messageGo to next message
Michel Cadot
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Registered: March 2007
Location: Nanterre, France, http://...
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Maybe you should read the documentation we already pointed to you and also use Google.

Regards
Michel
Re: Primary key and unique+not null [message #384817 is a reply to message #384792] Thu, 05 February 2009 05:47 Go to previous message
pablolee
Messages: 2834
Registered: May 2007
Location: Scotland
Senior Member
Probably a forlorn hope, but if you read this you might get what you need. As Michel said, simply searching on the likes of google would have got you this (and many other) explanation.
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