Re: teaching relational basics to people, questions
Date: Fri, 27 Nov 2009 15:13:19 +1100
Message-ID: <4b0f51e5$0$3253$afc38c87_at_news.optusnet.com.au>
vldm10 wrote:
> Regarding DK/NF and 6NF you can see my solution at www.dbdesign11.com.
> There I introduce “Simple Form” an effective solution which decomposes
> any relation to Binary Relations.
Your approach seems very similar in general to NIAM and other fact-oriented modeling approaches like ORM2. They are built on "Elementary Form", which in ORM2 can include fact types that are ternary and higher (though these are always trivial to binarise, the higher-order fact types are useful in modeling because they reflect natural verbalisations).
In any case, before you go claiming your work as "novel",
it'd be good if you did some reading on fact orientation
and see whether others haven't been there before you, like,
for example, more than twenty years ago ;-). This isn't a
criticism actually; I haven't looked in sufficient depth
at your work to decide whether you've done something new.
But a lot of it does seem very familiar...
> Regarding time my solution is event oriented.
I like this view - it accords with my thoughts on the
quantization of time where the general principle that
"time is just G*d's way of keeping everything from happening
at once" ;-).
Terry Halpin (creator of ORM2) has a recent article series
on temporal modeling published at brcommunity.com, if
Clifford Heath, Data Constellation, http://dataconstellation.com Agile Information Management and Design. Received on Fri Nov 27 2009 - 05:13:19 CET