Through some chain of random clicking, I came across this: Using the SQLObject Support package. It covers sqlos, a package than can be installed into Zope 3 that provides support for the lightweight Python O-R mapper SQLObject. What chiefly interests me is how sqlos demonstrates Zope 3's adaptability by adding in container objects whose subobjects are retrieved out of an RDBMS instead of the ZODB. At my business, we have a framework/system for data management that takes a different approach than object-relational mapping, and I've long hoped that it would be (relatively) easy to tie it in to Zope 3. We have a thin Zope 2 adaptation layer already, but Zope 3 is engineered better for this sort of integration, particularly for the applications that we're building on this system.