From: Robert Klemme <shortcutter@...>
Date: 2007-03-22T20:05:05+09:00
Subject: Re: Object/Relational Mapping is the Vietnam of Computer Science

On 22.03.2007 02:01, Jochen Theodorou wrote:
> Robert Klemme schrieb:
> [...]
>> How does it do schema migration?  Do you have experience with that?
> 
> look at 
> http://developer.db4o.com/ProjectSpaces/view.aspx/Db4o-Out-Of-The-Box_Presentation 
> 
> the part named "Refactoring and Schema Evolution"
> and at http://developer.db4o.com/forums/thread/26997.aspx
> 
> I think that covers most cases. There are other ways too, like 
> translators and reflectors, but I am not fit in that part.

Thanks for the pointer!  It seems at least not too big a pain to do 
although the "simple use the following code to resave all objects with 
UUIDs and VersionNumbers enabled" made me a little nervous. :-)  But if 
UUIDs and VersionNumbers are switched on then that should not be a big 
issue.  Still "ALTER TABLE ADD ( foo VARCHAR2(100) DEFAULT '-' )" feels 
a bit simpler...

Kind regards

	robert