I think it's because some DBs don't implement it. SQLite afaik doesn't have anything like that, and Mysql, only on InnoDB tables (default from 4.0+, but still).
Plus, it's not always about the data living on tables, running each delete() allows developers to exploit this, doing something in case an object is removed (delete files? email? log?). On 1/19/06, Russell Keith-Magee <[EMAIL PROTECTED]> wrote: > > So - is there a reason we don't use SQL referential integrity? > > Thanks, > Russ Magee %-) >
