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New MS patent: sounds like PG db rules

From: Justin Clift <justin(at)salasaga(dot)org>
To: pgsql-general(at)postgresql(dot)org
Subject: New MS patent: sounds like PG db rules
Date: 2008-05-27 11:12:53
Message-ID: 483BECB5.5040308@salasaga.org (view raw or flat)
Thread:
Lists: pgsql-general
Hi all,

Haven't delved into PG's rules system for a long time, but to me, this 
newly granted Microsoft patent sounds pretty close:

   US Patent 7376668 - Dynamic filtering in a database system
   Issued on May 20, 2008
   http://www.patentstorm.us/patents/7376668/claims.html

Abstract
"A dynamic filtering module receives a request to perform an operation 
on data in the database and a input. The dynamic filtering module 
provides as an output a modified request to a data access system. The 
modified request can include one or more restrictions added to the 
original request pertaining to which data will be accessed as a function 
of the input."

Am I wrong in thinking that PG provides prior art here?

Regards and best wishes,

Justin Clift

-- 
Salasaga  -  Open Source eLearning IDE
               http://www.salasaga.org

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