FOREIGN KEYs by themselves make it faster and easier to validate that your code is correctly maintaining referrential integrity.
They also let O/R mappers do more of the work in generating code for accessing your data (Blatant Plug: http://freshmeat.net/projects/easyorm/ -- EasyORM is an O/R mapper that introspects a MySQL DB and generates PHP code (eventually it'll also do Java (JDBC and EJB) and Perl.), and uses "hints" from an XML document you provide to build object-oriented code to access your schema. It's really crude right now -- the version in development is vastly more robust -- but we're using it successfully in our production environment.) FOREIGN KEYs combined with CASCADE ON DELETE/UPDATE (which InnoDB does not support yet) make it easier to write correct code: It manages changes/removals of dependant objects so you don't have to even think about it, let alone code it. -JF > -----Original Message----- > From: Richard Clarke [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, April 09, 2002 5:11 AM > To: [EMAIL PROTECTED] > Subject: Re: InnoDB tables > > > Luke, > > How exactly will the foreign keys save you time? Please explain. > > Ric. > > ----- Original Message ----- > From: "Luke van Blerk" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, April 09, 2002 9:17 AM > Subject: InnoDB tables > > > > Hi everyone, > > > > I've been reading up about InnoDB tables and they seem to have lots of > > advantages. I'm particularly interested in using the foreign > keys as this > > will save me some much need time. In the benchmark tests on the InnoDB > > website they show up faster than MyISAM tables but will foreign > keys have > a > > slow down effect? And are there any issues I need to know about before > > switching to InnoDB tables? > > > > Thanks in advance > > Luke van Blerk > > > > mysql > > > > > > --------------------------------------------------------------------- > > Before posting, please check: > > http://www.mysql.com/manual.php (the manual) > > http://lists.mysql.com/ (the list archive) > > > > To request this thread, e-mail <[EMAIL PROTECTED]> > > To unsubscribe, e-mail > <[EMAIL PROTECTED]> > > Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php > > > > > --------------------------------------------------------------------- > Before posting, please check: > http://www.mysql.com/manual.php (the manual) > http://lists.mysql.com/ (the list archive) > > To request this thread, e-mail <[EMAIL PROTECTED]> > To unsubscribe, e-mail > <[EMAIL PROTECTED]> > Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php > > --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
