On 02/11/10 23:11, Craig Ringer wrote:
> On 02/11/10 18:29, Jonathan Tripathy wrote:
>
>
>> I don't really mind what happens, as
>> long as the user is made aware of what has happen, and there aren’t any
>> memberships with no corresponding customers.
> Well, that's taken care of by a referential integrity constraint. You
> don't need anything else.
>
> It sounded earlier like you also needed to ensure that there were no
> customers without corresponding memberships.
That would be bad as well, however at least it wouldn’t crash the
system. What interleaving sequence would cause that?