Zope http://zope.org <http://zope.org/> : usually used for content
management systems, this network application server platform includes a
component for relational database mapping. It has, for instance, the
Zope Object Database (ZODB). It is a very popular tool, but I think it
is oriented towards python object persistence, not abstraction of the
database.
-- ValentinKuznetsov - 05 May 2006