On Wed, Jan 21, 2009 at 5:23 PM, r937 <rudy at r937.com> wrote: >> don't make email address the primary key in your valid user table.] > > whyever not? because it might change? what's wrong with updating a primary > key? > I think he's referring to the need to update foreign key references. I also think you knew that, so I'm assuming you dont agree :) -- Matt Warden Cincinnati, OH, USA http://mattwarden.com This email proudly and graciously contributes to entropy.