Re: circular relationships ok?

Gene Wirchenko wrote:
> >
> >This line of reasoning doesn't work for me at all. The question
> >was whether to put data items which are exactly-one-to-exactly-one
> >in the same table; it is not relevant to argue that you might not
> >want to do so because they might not be exactly-one-to-exactly-one.
>
> If the persons table has information on both married and
> unmarried persons and there is a table about marriages, where do you
> think the brithdates should go?

If the persons table has information on both married and unmarried persons, then birthdate is not something that is exactly-one-to-exactly-one, and the example is not relevant to the question at hand.

Marshall Received on Sat Mar 04 2006 - 00:40:26 CET