This is probably your best solution. I would _still_ put the constraint on the table because imho it's better to have a user see an error than to have no indication when something is wrong. This way, in the event that the stored procedure isn't working properly -- for any reason -- you'll know right away and you can fix it right away and you won't have to spend a lot of time cleaning up a horrible mess caused by some innocuous bug in your app. I'm not sure what kind of increased load the constraint creates, but I don't think it's significant in most situations.
Isaac Certified Advanced ColdFusion 5 Developer www.turnkey.to 954-776-0046 > I have recently just done a similar thing for a games > site... The email > address and the display name of the user was to be > unique... The way I > did it was via a stored procedure... So on registration I > call a stored > procedure and pass all the details through, then the proc > works out if > it can be added... If so then it inserts the record, if > not then it does > not... But in both cases it returns a row which contains > whether the > insert was successful or not so I could return an error to > the flash > file to tell the user to pick another name... > HTH > -----Original Message----- > From: Kola Oyedeji [mailto:[EMAIL PROTECTED]] > Sent: Sunday, September 29, 2002 19:29 > To: CF-Talk > Subject: OT: When to use database constraints > Hi > I would like to know if constraints other than keys are > usually used? I > have a database where the email address must be unique and > was wondering > if a constraint should be used. I could check for the > existence of an > email address prior to inserting a new record but this > involves another > query. Alternatively i could attempt to insert a duplicate > email address > and catch any database error generated as a result. I'm > just wondering > which method is best. Also the database will only be used > with this CF > application. > thanks > Kola > __________________________________________________________ > ____________ > This list and all House of Fusion resources hosted by > CFHosting.com. The place for dependable ColdFusion > Hosting. > FAQ: http://www.thenetprofits.co.uk/coldfusion/faq > Archives: > http://www.mail-archive.com/cf-talk@houseoffusion.com/ > Unsubscribe: > http://www.houseoffusion.com/index.cfm?sidebar=lists ______________________________________________________________________ Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
