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Re: Question related to unique key
Posted by: g_p g_p
Date: March 16, 2009 03:56PM

Thanks for replying!

So that means that a primary key can never be NULL.
Is that good when creating a table in a database?
Which one is the best and more secure,primary key or unique key?

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Question related to unique key
g_p g_p
March 16, 2009 07:43AM
Re: Question related to unique key
laptop alias
March 16, 2009 08:13AM
Re: Question related to unique key
g_p g_p
March 16, 2009 03:56PM
Re: Question related to unique key
Rick James
March 16, 2009 10:48PM


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