Re: Domain

"Dawn M. Wolthuis" <dwolt_at_tincat-group.com> wrote in message <news:bspsmq$eqo$1_at_news.netins.net>...

> "Joe "Nuke Me Xemu" Foster" <joe_at_bftsi0.UUCP> wrote in message
> news:1072722607.119541_at_news-1.nethere.net...
> > "portroe" <bob_at_sleigh.com> wrote in message
> <news:bspj1d$m3r$01$1_at_news.t-online.com>...
> >
> > > can anybody give me a definition of domain as applied to DB theory,
> >
> > If a DBMS had proper support for defining types, domains would be types.
> > Just as most modern programming languages support the creation of new
> > types, RDBMS' should support the creation and use of new domains.

> I agree except that I would state it more like "DBMS's should use modern
> programming languages where classes define types aka domains"

Oh no, you're a Pure OOPie-head as well?? =^|

> To answer the original question, without looking up anyone else's
> definition, I'd say that a domain is a named set of possible attribute
> values for a specified attribute.

That sounds more like a "field" with a "validation rule" to me...

--
Joe Foster <mailto:jlfoster%40znet.com>  "Regged" again? <http://www.xenu.net/>
WARNING: I cannot be held responsible for the above        They're   coming  to
because  my cats have  apparently  learned to type.        take me away, ha ha!