Re: Character string relation and functional dependencies

From: Marshall <marshall.spight_at_gmail.com>
Date: Sun, 9 Dec 2007 08:15:32 -0800 (PST)
Message-ID: <d274e8fb-cfe9-4d50-8168-84e632844ebd_at_e23g2000prf.googlegroups.com>


On Dec 9, 4:47 am, Jan Hidders <hidd..._at_gmail.com> wrote:
> On 7 dec, 01:24, Tegiri Nenashi <TegiriNena..._at_gmail.com> wrote:
>
> > On Dec 6, 2:38 pm, Jonathan Leffler <jleff..._at_earthlink.net> wrote:
>
> > > Tegiri Nenashi wrote:
> > > > On Dec 6, 9:40 am, rp..._at_pcwin518.campus.tue.nl (rpost) wrote:
> > > >> Another difference is that database tables are finite and variable,
>
> > > > Oh, relations in database world are certainly not restricted by finite
> > > > cardinality.
>
> > > I thought that computers are finite, so the relations containable in
> > > them are too - even if damn large. There's a big difference between
> > > very large and infinite.
>
> > This doesn't really matter. You can still reason about infinite
> > relations with finite resources available on you computer platform.
>
> Indeed you can. In case anyone is interested in a concrete example:
>
> http://cse.unl.edu/~revesz/cdb/index.htm

Looks very interesting. I bought the intro book.

Marshall Received on Sun Dec 09 2007 - 17:15:32 CET

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