I hope Mr. Jonathan can give you very good suggestions about your questions. Best Regards, Syed Jaffar Hussain -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Daniel Fink Sent: Wednesday, April 28, 2004 5:15 PM To: oracle-l@xxxxxxxxxxxxx Subject: Index-Organized Table experiences We are looking to implement IOTs for a couple of intersection entities in a 10g db. I would like to hear from those brave enough to actually use IOTs what is the good, the bad and the ugly. example: Employee (heap table) Project (heap table) There is a many-to-many relationship between the tables (1 employee can be on many projects and 1 project can have many employees). The emp_project table is the intersection entity containing emp_id and project_id as the only columns. There are FK constraints on each of the columns. The combination of emp_id and project_id is unique. This situation *sounds* like the right one for an IOT, otherwise we would have 1 table and 2 indexes (1 on each column). My main concerns are: 1) Integrity/performance 2) Locking behavior (do I need to adhere to the traditional "index all foreign keys" rule to prevent excessive locking?) 3) Any especially nasty gotchas Thanks, Daniel ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------