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

  • From: dba1 mcc <mccdba1@xxxxxxxxx>
  • To: oracle-l@xxxxxxxxxxxxx
  • Date: Tue, 18 Jan 2005 10:59:29 -0800 (PST)

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.   


                
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - Easier than ever with enhanced search. Learn more.
http://info.mail.yahoo.com/mail_250
--
//www.freelists.org/webpage/oracle-l

Other related posts:

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