Re: Why are [Database] Mathematicians Crippled ?

Op maandag 2 februari 2015 16:53:05 UTC+1 schreef Derek Asirvadem:
> > On Tuesday, 3 February 2015 02:10:09 UTC+11, Jan Hidders wrote:
> >
> > A correction: upon rematching the video I saw that he actually does give the definition in the beginning, even if somewhat briefly. He also refers to the lecture notes and mentions that they contain the full definition. So I withdraw my criticism.
>
> Ok.
>
> We are progressing very slowly.
>
> Now I realise, you probably did not understand my first post about this video.
>
> I know that he inflates the value of his knowledge, whatever he is going to teach, by mentioning databases that are in 1NF. I know that he gives the well-known theoretical "definition" for what is suggested as 3NF. But what you do not know is, that definition is the usual, stupid, fractured, fragmented, definition that is only relevant to theoreticians.
>
> It is only a fraction of the original Codd definition.

Interesting. So what is his definition of 3NF and how does it differ from Codd's? Is it just different in wording, or is it actually not equivalent?

• Jan Hidders