On 12/04/12 13:35, J. Daniel Schmidt wrote: > While testing our SUSE OpenStack packages we hit a nasty bug and reported it > as: https://bugs.launchpad.net/keystone/+bug/972502 > > We found out that the underlying cause was a lack of referential integrity[1] > using sqlite or mysql. When we tried to reproduce this issue on postgresql the > usage of foreign keys greatly helped to find the cause. >From a MySQL prospective that is probably more of an argument to use transactions, not foreign keys. Kind Regards -- Andrew Hutchings - LinuxJedi - http://www.linuxjedi.co.uk/