Re: Mazes, trees, and forests
Date: Sat, 24 Apr 2004 01:41:02 +0200
Message-ID: <4089a993$0$563$e4fe514c_at_news.xs4all.nl>
x wrote:
> Why do you consider only the foreign-keys of R1 ?
Following the forestify algorithm eventually all foreign
> A user can connect any two relations on any two attributes of compatible
> types.
Sure, and by expanding along those lines every user can build his own forest.
> Do you consider only the base relations or any relation ? ;-)
Well, I did. With 'any relation': you mean every conceivable relation on a base?
> How can someone (other than the user) predict for what pairs of attributes
> the join of two relations make sense ?
> This is why a relational DBMS is different from other types of DBMSs.
Do you mean to imply that with 'other types of DBMS' (historic I assume) can't connect as they please? I must be misreading you. Received on Sat Apr 24 2004 - 01:41:02 CEST