Re: Tree (forest) design
From: Neo <neo55592_at_hotmail.com>
Date: 5 Mar 2004 22:51:50 -0800
Message-ID: <4b45d3ad.0403052251.3bdae397_at_posting.google.com>
Date: 5 Mar 2004 22:51:50 -0800
Message-ID: <4b45d3ad.0403052251.3bdae397_at_posting.google.com>
> > Your solution won't work for Ex076. Ex076 allow a user to enter
> > normalized and NULL-less data representing any hierarchy.
>
> So does any other tree model in SQL.
While is not impossible in RDM, it requires generic modelling for some cases, and in extreme cases requires a db with just one 2-col table, which is impractical. For example, even in your model of Ex076's tree has a NULL (see your other posting in this thread). Received on Sat Mar 06 2004 - 07:51:50 CET