Re: object algebra

"Marshall Spight" <mspight_at_dnai.com> wrote in message news:EgY_b.120006$uV3.621497_at_attbi_s51...
> "Neo" <neo55592_at_hotmail.com> wrote in message news:4b45d3ad.0402241230.1365e6a5@posting.google.com...
> > > Do you make some distinction between relational and RDM,
> > > and if so, what is RDM?
> >
> > RDM (data expressed as collections of tuples contrained by the header,
> > etc) is less general than relational [ie ((((ab)cd)e)f)(gh)].
>
> Could you show us the parenthesized representation of a three node
> directed graph, with nodes A, B, and C, and arcs from A->B, B->C,
> and C->A? If you believe that relations are unnecessary, then you
> should be able to do it without directly encoding a relation into
> your expression.

Any chance I could tempt you to try the above problem? It's much simpler than your EX76 which I have attempted.

Marshall Received on Thu Feb 26 2004 - 05:00:09 CET