Read docs about CHECK constraint. Igor Neyman, OCP DBA [EMAIL PROTECTED]
----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Thursday, January 30, 2003 11:00 AM > Is there any way you can specify that the only permissible values (is it > called a domain?) that can be entered in varchar2 field in an Oracle > table to, for example, A, B and C? > > We can restrict what values users can enter at the application level, > but it would be nice to be able to also restrict what can be entered at > the database level, in case other means of entering data are ever used > or if the application layer fails, for whatever reason, to trap an > unwanted value. > > > Thanks > > -- > Aidan Whitehall <[EMAIL PROTECTED]> > Macromedia ColdFusion Developer > Fairbanks Environmental Ltd +44 (0)1695 51775 > > ________________________________________________________________________ > This e-mail has been scanned for all viruses by Star Internet. The > service is powered by MessageLabs. For more information on a proactive > anti-virus service working around the clock, around the globe, visit: > http://www.star.net.uk > ________________________________________________________________________ > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Aidan Whitehall > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (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). > -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Igor Neyman INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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).
