Re: Relational vs network vs hierarchic databases

"Neo" <neo55592_at_hotmail.com> wrote in message news:4b45d3ad.0411082301.8d20092_at_posting.google.com...
> > > How would one represent the following without redundancy or NULLs?
> > >
> > > john like mary.
> > > mary like john.
> > > (john like mary) because (mary like john).
> > > bob hit mary on elbow.
> > > john hit bob on shoulder during lunch. // Correction
> > > (john hit bob on shoulder during lunch) because (bob hit mary on elbow).
> >
> > See, the thing is, *representation* per se isn't that big of a problem.
>
> Then please post it using RM observing good practices such as avoiding
> NULLs and redundancy. Then we can proceed to evalute the other
> considerations.

With regards to what set of operations? Otherwise I'm going to stick with my "string" answer, because it's easiest.

Marshall Received on Tue Nov 09 2004 - 17:34:11 CET