Re: Normalizing the ER model

"Costin Cozianu" <c_cozianu_at_hotmail.com> wrote in message news:at3ei9$1042qg$1_at_ID-152540.news.dfncis.de...
>
> > I have a firm foundation in the theory.
>
> If you have a firm foundation on theory maybe you can share with us
> where you read that theory that says that normal forms normalization
> doesn't apply to entity types in an ER schema.

Please, there was third normal form before Chen did ER diagrams. You read Codd and Date. We're talking about functional dependencies among attributes. But look, you obvioulsy think you're brilliant, and I'll let you believe it.
>
> >And he doesn't need your help to
> > defend himself. I was answering a question, and King still has it
right. So
> > in that context "please" is useless.
>
> Maybe it's useless, but when you are so plain wrong, yet you use a
> phrase like "you show what you don't know", I think "please" would be an
> improvement. I didn't intend to help Jan, I intended to help you.
>
> Please consult B. Thalheim "Entity Relationship Modeling - Foundations
> of Database Technology" Springer 2000, page 392. I suggest that if
> you're interested in ER, the book is a must have.
>
> >

Derivative...
> > Best Regards,
> >
> > Greg
> >
>
> Best regards,
> Costin Cozianu
>
Received on Tue Dec 10 2002 - 02:44:33 CET