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RE: have been wondering for quite a while

From: Maser, Donna (SEA) <Donna.Maser_at_sea.celltechgroup.com>
Date: Mon, 02 Jul 2001 13:18:30 -0700
Message-ID: <F001.0033F683.20010702132032@fatcity.com>

>From the manual:

CONSTRAINT_TYPE
Type of constraint definition:

C (check constraint on a table)
P (primary key)
U (unique key)
R (referential integrity)
V (with check option, on a view)
O (with read only, on a view)


-----Original Message-----
Sent: Monday, July 02, 2001 1:47 PM
To: Multiple recipients of list ORACLE-L

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

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Author: William Dong
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Author: Maser, Donna  (SEA)
  INET: Donna.Maser_at_sea.celltechgroup.com

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Received on Mon Jul 02 2001 - 15:18:30 CDT

Original text of this message

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