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Home -> Community -> Mailing Lists -> Oracle-L -> Re: have been wondering for quite a while
null is a check constraint
v is (I believe) a view constraint
>From: "William Dong" <William_Dong_at_nylim.com>
>Reply-To: ORACLE-L_at_fatcity.com
>To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
>Subject: have been wondering for quite a while
>Date: Mon, 02 Jul 2001 12:46:41 -0800
>
>DBAs:
>
>On the user_constraints view, you can find the constraint_type has five
>distinct
>values:
>C, O, P, R, U, and V.
>C=check,
>P=primary key,
>R=foreign key,
>U=unique key.
>What about O and V?
>
>If I assume O=optional(null/not null), I really can not guess V.
>
>Anyone can help?, Thanks in advance.
>
>William
>
>
>--
>Please see the official ORACLE-L FAQ: http://www.orafaq.com
>--
>Author: William Dong
> INET: William_Dong_at_nylim.com
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Rachel Carmichael INET: carmichr_at_hotmail.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Mon Jul 02 2001 - 15:50:17 CDT
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