Re: Is mysql a RDBMS ?

"Mikito Harakiri" <mikharakiri_at_ywho.com> wrote in message news:<m6t2b.11$V06.203_at_news.oracle.com>...

> I don't know. I would certainly be on your side if relational theory would
> comprise all the math, not predicate calculus only. For example, how would
> you represent multivariate polynomial
>
> 3*x*y^2+5*x^3
>
> relationally?

Something like:

  x y R

• - - 0 0 0 0 1 0 1 1 8 . . .

const XXX = extend relation { x Numeric, y Numeric } add R as 3*x*y^2+5*x^3;

???

> Difference between pure Relational and SQL are well known and in my opinion

By a little minory of the IT professionals.

> I would
> think reiterating SQL and Relational diferences over and over again is just
> counter productive.

It is very boring, but a lot of people still is not aware of the diferences.

Regards
  Alfredo Received on Sat Aug 30 2003 - 21:20:21 CEST