Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> comp.databases.theory -> Re: Searching OO Associations with RDBMS Persistence Models

Re: Searching OO Associations with RDBMS Persistence Models

From: Robert Martin <unclebob_at_objectmentor.com>
Date: Mon, 19 Jun 2006 21:13:11 -0400
Message-ID: <2006061921131175249-unclebob@objectmentorcom>


On 2006-06-16 16:03:30 -0400, "Aloha Kakuikanu" <aloha.kakuikanu_at_yahoo.com> said:

> Assume network is an [indirected] graph. Then logical connection is a
> path in the graph. There is nothing challenging in modelling graph in
> RDBMS and creating application objects that correspond to paths in a
> graph. Why "object id" is significant in this picture?

Agreed. There is nothing challenging about representing the connection object I described within an RDBMS. However, there was no NEED. Connections were not persistent. They were computational objects whose existence was transient.

Thus, they had no key; and keys were not used to identify them.

-- 
Robert C. Martin (Uncle Bob)  | email: unclebob_at_objectmentor.com
Object Mentor Inc.            | blog:  www.butunclebob.com
The Agile Transition Experts  | web:   www.objectmentor.com
800-338-6716                  |
Received on Mon Jun 19 2006 - 20:13:11 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US