The only indexes that enforce a constaint are primary key and unique key indexes. You can easily spot them using
SELECT INDEX_NAME, OWNER FROM DBA_INDEXES WHERE UNIQUENESS = 'NONUNIQUE' However, beware, there may be some unique indexes that may have been created for performance reasons only, even though a secondary intent may be to enforce a unique constraint. For instance Social Security Numbers are probably unique, guranteed pretty much by the application but an index defined on them will be defined as unique as unique indexes perform better. Therefore the intent here was not to enforce the constraint but rather to design a better index. HTH Arup Nanda www.proligence.com ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Friday, November 22, 2002 1:39 PM > I am trying to find out what indexes are in the database only for performance > reasons and do not enforce a constraint. What would be the query to do that? > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: <[EMAIL PROTECTED] > 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.com -- Author: Arup Nanda 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).
