"James" <jraustin1_at_hotmail.com> wrote in message
news:a6e74506.0206142138.709b309f_at_posting.google.com...
> > > > Both XDb and rdbs are fundamentally based on the same concept of
> > > > relation (a related set of information, according to one book).
> > >
> > > XDb is based on domains -- not relations.
>
> Let Range = {Marble}
> Let Domain = {M1, M2}
> The relation between Domain and Range can be defined
> by a function which always returns Marble.
Functions are a small subset of relations and cannot express everyting that
relations express. Relations are more general.
Received on Sat Jun 15 2002 - 16:45:46 CDT
