Yeah, make the foreign key from the parent the primary key in the child. Jared
"Magaliff, Bill" <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 03/15/02 08:53 AM Please respond to ORACLE-L To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> cc: Subject: maintain one-to-one relationship Hi, Anyone know of a way OTHER THAN A TRIGGER to maintain a one-to-one relationship between two entities (in this case a parent-child - only one child for each parent) thanks bill Bill Magaliff Framework, Inc. 914-631-2322 -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Magaliff, Bill INET: [EMAIL PROTECTED] 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: [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.com -- Author: INET: [EMAIL PROTECTED] 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: [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).