Oracle-L: RE: Replication question

From: Lowes, Harry (NESL-IT) <Harry.Lowes_at_npowernorthern.com>
Date: Fri, 21 Jun 2002 04:36:54 -0800
Message-ID: <F001.00483F90.20020621043654@fatcity.com>

Peter,

Great idea, but would you care to share the impact of these triggers on performance? I think it's a good principle to follow, but have always found triggers a little unwieldy for most operations myself. I would have thought this to be the case here, but I'd like to hear your experiences on the subject.

Thanks awfully,

Harry Lowes
"My enthusiasm for both the job in hand and the welfare of my fellow man knows no bounds."
Database Administrator and bon vivante,
npower Northern Limited

-----Original Message-----
Sent: 21 June 2002 11:49
To: Multiple recipients of list ORACLE-L

Interesting comments on replication - but something hit me between the eyes.

Primary Keys should NEVER, EVER be permitted to be updated, whether you are using replication or not. Its a basic tenent of relational design. We have been using triggers to prevent this for years.

peter
edinburgh

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Author: Robson, Peter
INET: pgro_at_bgs.ac.uk

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Author: Lowes, Harry (NESL-IT)
INET: Harry.Lowes_at_npowernorthern.com

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