Re: Peter Chen and Charles Bachman

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"Leandro Guimaraes Faria Corsetti Dutra" <leandro_at_dutra.fastmail.fm> wrote in message news:pan.2004.05.05.21.34.17.793912_at_dutra.fastmail.fm...
> >> So it is not a logical model. At most a conceptual one, and
> >>incomplete at that.
> >
> > Nope. It can be a logical model, if done to a RW amount of
> > detail. It is not the physical model though.
>
> Physical is totally another story.
>
> ERDs can't represent the constraints of the logical model.

What constraints ? :-)

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