The active storage framework is a hierarchical
object database modeled after the object database
of Userland Frontier (in spirit, not in format).
It is based on an SQL database backend (currently
PostgreSQL is available) that is used for
efficient storage of objects but uses a Frontier
like way to access elements in it. It has rich
data types for storage of Python values, and is
tightly integrated in the Python attribute and
dictionary access syntax. Its query algebra allows
efficient hierarchical queries, and will be
compiled on usage into SQL queries.
