Oracle-L: RE: Unindexed foreign key

From: Ganesh Raja <rlnsimha_at_emirates.net.ae>
Date: Thu, 11 Jul 2002 05:18:20 -0800
Message-ID: <F001.00494BBE.20020711051820@fatcity.com>

Whenever You Modify the Parent Table rows the Child Table is Entirely Locked so that no DML Takes Place.

Also If there are no Indexes on the FK. Oracle Will have to do a FTS for all the Quries that you are going to Join with the Parent Table.

HTH Best Regards,
Ganesh R

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-----Original Message-----
Kumar Mishra
Sent: Thursday, July 11, 2002 4:14 PM
To: Multiple recipients of list ORACLE-L

Hi Gurus!
How does the unindexed foreign key affect the performance ?

regards....
Shishir Kumar Mishra
Agni Software (P) Ltd.
www.agnisoft.com

Vidya Dadaati Viniyam

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Author: Ganesh Raja
INET: rlnsimha_at_emirates.net.ae

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