[Q] what difference between PK and unique index + not NULL??

From: dba1 mcc <mccdba1_at_yahoo.com>
Date: Tue, 18 Jan 2005 10:59:29 -0800 (PST)
Message-ID: <20050118185929.95326.qmail@web60807.mail.yahoo.com>

I have some argued with contractor about Primary key and Unique index + Not NULL. Contractor said Primary Key = (field specify NOT NLL and create unique index ..). I rember some documents say Primary Key and (unique index, not null) still some different.

Does anyone have opinion?

Thanks.                 

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Received on Tue Jan 18 2005 - 21:49:51 CST