Re: Other tree representations in SQL
From: Alfredo Novoa <alfredo_at_ncs.es>
Date: 7 Dec 2002 08:02:55 -0800
Message-ID: <e4330f45.0212070802.4399966b_at_posting.google.com>
Date: 7 Dec 2002 08:02:55 -0800
Message-ID: <e4330f45.0212070802.4399966b_at_posting.google.com>
> > The 5040 different transversals are here:
> >
> > Tree { N };
>
> No.
Yes :)
> The process of visiting all nodes is "traversal" without "ns".
What is "ns"?
> Since your solution is not a Tree, because it does not differentiate
> between preceding and subsequent nodes, it can not be traversed.
Preceding and subsequent?
Show me a tree definition containing that words.
My example is a relational representation of a simple hierarchy.
> "Tree {N}" does nothing at all.
Alfredo Received on Sat Dec 07 2002 - 17:02:55 CET