On Sun, Apr 7, 2013 at 6:19 PM, Bill Moseley mose...@hank.org wrote:
On Sun, Apr 7, 2013 at 12:40 PM, Len Jaffe lenja...@jaffesystems.comwrote:
In my opinion, the best way to model a tree in an RDBMS is to use
Materialized Path.
I found the amount of work involved in each insert/delete of
Bill Moseley wrote:
Anyone using DBIC to represent hierarchal directory (folder) structures?
Essentially just like a file system, except users each have their own root.
To add to the complexity, I need to be able to share folders and all
child elements to other users.
Just a thought, and
On Mon, Apr 08, 2013 at 02:43:12AM -0400, Len Jaffe wrote:
On Sun, Apr 7, 2013 at 6:19 PM, Bill Moseley mose...@hank.org wrote:
On Sun, Apr 7, 2013 at 12:40 PM, Len Jaffe lenja...@jaffesystems.comwrote:
In my opinion, the best way to model a tree in an RDBMS is to use
Materialized
On Mon, Apr 8, 2013 at 1:30 AM, Dave Howorth dhowo...@mrc-lmb.cam.ac.ukwrote:
Bill Moseley wrote:
Anyone using DBIC to represent hierarchal directory (folder) structures?
Essentially just like a file system, except users each have their own
root.
To add to the complexity, I need to be
On Sun, Apr 07, 2013 at 11:42:01AM -0700, Bill Moseley wrote:
Postgresql has WITH RECURSIVE which DBIC has no support for (other than
virtual views):
I do not have a coherent opinion/advice on your actual question, however
some pointers on the above statement. Perhaps you can cleanup the
In my opinion, the best way to model a tree in an RDBMS is to use
Materialized Path.
I found the amount of work involved in each insert/delete of a nested set
to be too great, and adjacency lists (parent pointer) fails to allow for
retrieving all of a tree or subtree with one round-trip to the
On Sun, Apr 7, 2013 at 12:40 PM, Len Jaffe lenja...@jaffesystems.comwrote:
In my opinion, the best way to model a tree in an RDBMS is to use
Materialized Path.
I found the amount of work involved in each insert/delete of a nested set
to be too great, and adjacency lists (parent pointer)
http://www.ibase.ru/devinfo/DBMSTrees/sqltrees.html is a good read for
anyone who wants to construct hierarchical data structures. It would
need some modification to handle shared folders.
On Sun, Apr 7, 2013 at 11:42 AM, Bill Moseley mose...@hank.org wrote:
Anyone using DBIC to represent
