Hi,

Classic ORM is Object Role Modelling, not Object Relational Mapping.

Everything else in this article about SARG is brilliant.

Here are the references to the source on ORM:

http://www.orm.net/pdf/springer.pdf#search='terry%20halpin%20object%20role%20modeling'

Object-Role Modeling (ORM/NIAM)

by Terry Halpin

http://msdn.microsoft.com/library/?url=/library/en-us/dv_vstechart/html/vstchvsea_ormoverview.asp

Object Role Modeling: An Overview

Terry Halpin

Visual Studio Team

Microsoft Corporation

November 2001