Re: Nested Sets vs. Nested Intervals
From: Mikito Harakiri <mikharakiri_nospaum_at_yahoo.com>
Date: 10 Nov 2005 08:56:31 -0800
Message-ID: <1131641791.653691.162820_at_z14g2000cwz.googlegroups.com>
Date: 10 Nov 2005 08:56:31 -0800
Message-ID: <1131641791.653691.162820_at_z14g2000cwz.googlegroups.com>
Alexandr Savinov wrote:
> Mikito Harakiri schrieb:
> > amado.alves_at_netcabo.pt wrote:
> >
> > Take a set of all tables as a set of vertices. Take a set of all
> > foreign key integrity constraints as a set of edges. Do you challenge
> > the idea that I just defined a graph?
>
> Yes, but in such a formulation it is not RM! It is a graph model
> implemented via RM.
I was merely suggesting that there is no more substance to the Entity-Relationship model than in the above graph definition. Received on Thu Nov 10 2005 - 17:56:31 CET