Re: TREE in a database
| From: | John Lim | Date: | Wed, 31 Oct 2001 15:44:11 +0000 |
| Subject: | Re: TREE in a database | ||
| References: | 1 | Groups: | php.db |
| Request: | Send a blank email to php-db+get-13884@lists.php.net to get a copy of this message | ||
Actually relational databases are set-based. The answer to
your tree structures question is that it is possible. It
is quite complicated though, so have a look at this phphoo
tutorial:
http://www.webreference.com/perl/xhoo/php1/
Rick Emery <remery@excel.com> wrote in message
news:EAA093B474ABD311A71E00508B5FE08305C2CB59@adntex03.us.excel.com...
> Relational databases really are tree structures. However, whereas a tree
> parent node has pointers to children or sibling nodes; in a relational
> database, the nodes "point up" to the parent node. The nodes might also
> maintain a field to identify sibling nodes.
>
> -----Original Message-----
> From: Robert Vukovic [mailto:vrobert@EUnet.yu]
> Sent: Monday, October 29, 2001 2:03 PM
> To: 'Php-DB'
> Subject: [PHP-DB] TREE in a database
>
>
> Is there an easy way to implement tree structure in a database.
> Something like file systems do for files.
>
> Hints, links, anything.
>
>
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