Re: Nulls, integrity, the closed world assumption and events

Neo wrote:
> > I have changed my mind on a lot of things since posting here
> > originally. But so far you are right that I haven't seen the proof
> > that I should want to move from NF2 to 1NF...
>
> I may have missed the explanation above, if initially john has no cars,
> tom has two cars, and bob has one; how does the MV solution later
> handle each car having 0 to many manfacturers?

I might model people, cars, & manufacturers with the above requirements as

Person(id, cars)
Car(id, manufacturers)

Is that enough info to answer the question? --dawn

> Because dbd's data model is very general, systematic, normalized, holy,
> etc; one simply adds those attributes like this:
>
> (new gm 'mfg)
> (new honda 'mfg)
>
> (set (. 'aston 'martin) mfgdBy honda)
> (set (. 'aston 'martin) mfgdBy gm)
Received on Tue Jan 16 2007 - 21:40:22 CET