Re: Normalization by Composing, not just Decomposing
Date: Fri, 09 Apr 2004 17:36:38 GMT
> Anyway, the irreducible normal form (one non-key attribute only)
> was recently mentioned again by Chris Date as the 6th normal form.
> AFAIK it (irreducible normal form - by another name) first popped up in
> NIAM (when it was called Nijssen's Information Analysis Method, late
> 1970's, after one of its originators, prof Nijssen. Now the N stand for
> Natural) - I don't remember what is was called in that context -
> something like 'elementary sentence'.
To a large extent ORM *is* NIAM.
- Jan Hidders