Re: Idempotence and "Replication Insensitivity" are equivalent ?

David Cressey <dcressey_at_verizon.net> wrote:
> It's probably me. I'm trying to use the term "domain" the way some of the
> mathematicians seem to be using it.
>
> Here's what I think I got by making inferences from other posts: the domain
> of a relation is the cartesian product of the domains of each of its
> attributes.

That's correct. Database theory authors just don't often use the word "domain" in that way.

-- 
Chris Smith