From: Austin Ziegler <halostatue@...>
Date: 2005-03-27T02:28:14+09:00
Subject: Re: OO database concepts...

On Sat, 26 Mar 2005 04:50:03 +0900, itsme213 <itsme213@hotmail.com> wrote:
>> Portability. If you need to change the object model at all in an
>> object database, you have to go through a full-scale migration of
>> the entire data store. In an (O)RDBMS, you have only to go
>> through a migration (and sometimes not even that) only on the
>> tables affected. If you want to change your OODBMS
>> implementation, it's infinitely harder than the already difficult
>> problem of migrating (O)RDBMS implementations.
> Have you considered Views? Relational views are of limited use (in
> some domains) due to their data modeling limitations and view
> update problems. Views in an ODB are richer, and can help localize
> schema evolution and data migration.

I think that you're looking at RDBMS from a while back. As I
understand it, both Oracle and SQL Server have solved the view
update problems, but in diffferent ways.

-austin
-- 
Austin Ziegler * halostatue@gmail.com
               * Alternate: austin@halostatue.ca