Re: [GENERAL] How to express categorized items in relational tables

On Thu, 13 May 1999, Chris Bitmead wrote:

> Doo Suk Yang wrote:
> >
> > I'm novice in database world.
> > Now I have to make design a database where categorized items should be
> > stored. It resembles the structure something like seen in Yahoo.
> >
> > Thanks for reading and generous comments of yours.
>
> I do it something like this..
> create table category (title text, category oid);
> so that categories have parent categories. If the category attribute is
> null then it's a parent category. For urllinks (like in yahoo) I have
> create table urllink (title text, url text, category oid);
>
Thank you for your answer. It is going to be working.

BTW, when inserting a parents category I had to go through two steps;
selecting category of parents and inserting new title and selected
category. Of course I'm using Perl and the above two steps are not great
matter. But still I'm curious is it possible to write an SQL statement to
do it.

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