This isn't something I know much about but Paul Wilson has his own O/R Mapper
and has written a lot on the subject so you may find some useful info on his
site.

http://www.wilsondotnet.com/

--
David Portas
SQL Server MVP

Greetings !



We're surprise to see no reply to our original question about
Object/Relational mappers.



So no one as such architecture?



We need this for our software since we made such a layer years ago but it
doesn't perform as we expected.



We're then looking for a commercial mapping framework.



We're currently looking toward "Versant Open Access" and ObjectStore's
"EdgeXtend".



Again, we are developing on VC6.



Thanks

These guys have some reasonable product:
http://www.mongoosesolutions.com

Also, MS had a plan to release ObjectSpaces with VS2005 but it got pulled
last I heard. There's some stuff on this up on MSDN at:
http://www.microsoft.com/belux/nl/msdn/community/columns/jtielens/objectspaces.mspx#Introducing%20Object/Relational%20Mapping

ORM is presently far more mature on other platforms such as JAVA, STRUTS
which is a pity for us Windows developers because it's a very powerful &
important part of agile development techniques. That said, I've had the
*pleasure* of haveing to performance tune some ORM based systems & I can
promise you it ain't a fun thing to do.

Regards,
Greg Linwood
SQL Server MVP

[quoted text, click to view]