In my experience this happens a lot if you put application programmers in charge of the database. I've upset quite a few in my time by introducing RI and then their horribly coded application falls over!
-----Original Message----- From: Peter Brawley [mailto:[EMAIL PROTECTED] Sent: 24 May 2007 17:31 To: Naz Gassiep Cc: mysql@lists.mysql.com Subject: Re: Integrity on large sites Naz, >"*Really* big sites don't ever have referential integrity. Or if the few spots >they do (like with financial transactions) it's implemented on the application >level (via, say, optimistic locking), never the database level." Mebbe that view was common in the MySQL community in the time of version 3, when the emphasis was on one site managing one db. Agreed the concept is scary. Try that quote in an Oracle or MSSQL community :-) PB ----- Naz Gassiep wrote: > I'm working in a project at the moment that is using MySQL, and people keep making assertions like this one: > > "*Really* big sites don't ever have referential integrity. Or if the few spots they do (like with financial transactions) it's implemented on the application level (via, say, optimistic locking), never the database level." > > A large DB working with no RI would give me nightmares. Is it really true that large sites turn RI off to improve performance? Am I just being naive in thinking that everyone runs their DBs with RI in production? > > > This email is confidential and may also be privileged. If you are not the intended recipient please notify us immediately by telephoning +44 (0)20 7452 5300 or email [EMAIL PROTECTED] You should not copy it or use it for any purpose nor disclose its contents to any other person. Touch Local cannot accept liability for statements made which are clearly the sender's own and are not made on behalf of the firm. Touch Local Limited Registered Number: 2885607 VAT Number: GB896112114 Cardinal Tower, 12 Farringdon Road, London EC1M 3NN +44 (0)20 7452 5300 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
