Re: teaching relational basics to people, questions

Jan Hidders wrote:

>On 21 dec, 23:07, r..._at_raampje.lan (Reinier Post) wrote:

[...]

>> [...] It's hard fo me to tell, because I just did the
>> required math and it turns out don't have $60 to spend on the book
>> which contains the definition of 6NF required for this discussion,
>> but if I can get by the Google Books preview, it appears to involve some
>> degree of interpretation of domain values (as being totally ordered).
>> Normal normal forms don't do this.
>
>Wikipedia is your friend:

I know ...

><http://en.wikipedia.org/wiki/Sixth_normal_form>

... that's why I'm so forgiving when it disappoints me, I guess. I even try to remedy its shortcomings every now and then, which is why you see half a definition on that page right now - I couldn't find the definition of "U-projection" to complete it, and apparently, nobody else can, which makes me wonder whether the subject should be on Wikipedia in the first place. So please help out if you can.

-- 
Reinier