Re: The relational model is a wrong theory

[Quoted] [Quoted] Dana utorak, 8. listopada 2019. u 20:14:05 UTC+2, korisnik James K. Lowden napisao je:
> On Mon, 7 Oct 2019 08:38:52 -0700 (PDT)
> vldm10 <vldm10_at_yahoo.com> wrote:
>
> > A man named John Smith had black hair in 2010. In 2019, his hair was
> > white. According to Codd's Relational model, these are two different
> > people.
>
> I would like to think you're being provocative just to breath some life
> into c.d.t. You don't truly believe what you wrote, right?

>
> Codd refers to the phenomenon of
> "changing over time" in his 1970 paper.

I can tell you that my grandmother said the same thing as you quoted E. Codd. But she's certainly older than Codd, so the priority for that idea belongs to her. Received on Thu Oct 10 2019 - 04:54:56 CEST