The Zope Object Database (ZODB) is an object-oriented DBMS library for storing Python objects.
Object-Oriented
http://www.zodb.org/
https://github.com/zopefoundation/ZODB
http://www.zodb.org/en/latest/reference/index.html
Zope Foundation
US
2009
Open Source
Python
Zope Public License
https://en.wikipedia.org/wiki/Zope_Object_Database