ZODB

ZODB is an object-oriented database for Python objects. Properties of ZODB: - transparent long-term storage of Python objects; - transactions, full ACID support including save points; - multiversion competitive access control (MVCC); - history and rollback of changes; - large binary objects (BLOB) support; - scalable architecture. The ZODB storage is logically an oriented Python object graph, with the Python dictionary as its root. Objects are accessed by traversing pointers from the root to the target object. ZODB uses the mechanism of object serialization from the standard Python library.