Re: Codd provided appropriate mathematics ... (was Re: Relational and MV (response to "foundations of relational theory"))

"Marshall Spight" <mspight_at_dnai.com> wrote in message news:GZw3c.222806$jk2.860097_at_attbi_s53...
> "Bob Badour" <bbadour_at_golden.net> wrote in message
news:l-mdnVu0ycQQGdPdRVn-vA_at_golden.net...
> >
> > I have no particular use for lists at the logical level.
>
> Really? You never have arbitrarily ordered data?

I have no ordered data that I cannot order with some value or another.

> > > So you're thinking of a view which produces the compression?
> >
> > No, I am thinking of compression as a physical issue unrelated to the
> > logical interface.
>
> I can see how that can work with lossless compression, but I don't see
> how it can work with lossy compression. Lossy compression has user-
> visible effects. It is therefor a logical issue, not a physical one.

The visible effects are logical. The compression is physical. Received on Wed Mar 10 2004 - 12:27:45 CST