Re: foundations of relational theory?

Originally posted by Bob Badour

> "Marshall Spight" <mspight_at_dnai.com> wrote in message

> news:_Qymb.25414$Fm2.10043_at_attbi_s04"]news:_Qymb.25414$Fm2.1004-
> 3_at_attbi_s04[/url]...

> > "Bob Badour" <bbadour_at_golden.net> wrote in message

> news:HPudnfvbBOkx4weiU-KYhw_at_golden.net"]news:HPudnfvbBOkx4weiU-
> KYhw_at_golden.net[/url]...

> > > "Marshall Spight" <mspight_at_dnai.com> wrote in message

> > > news:MDomb.23527$HS4.91636_at_attbi_s01"]news:MDomb.23527$-
> HS4.91636_at_attbi_s01[/url]...

> > > Agility is just another word for logical independence. Pick
> lacks it.

> > Well, okay. But do existing DBMSs have complete logical
> independence?

> > I think they don't. Views aren't as easy to work with as they
> need to

> > be, for example.

>

> There are limits to everything, of course. When I say Pick lacks
> it, Pick

> lacks it completely. When comparing two logical data models, one
> must ask

> which of the two provides more logical independence. When trying
> to improve

> the state of the art of technology, one must ask how one might
> get more

> logical independence than is currently available.

>

> I'm sorry but I don't understand this. What do you mean by logical
> independence? Why is it important? Why would you say Pick lacks it?
> What is it about Pick that makes logical independence
> difficult/impossible? Why is it important to strive for more of it?

>

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