Support for persistant objects in PostgreSQL?

Hi,

Can you have persistant objects in PostgreSQL? In
Oracle you can have create Object types. e.g
create type ADDRESS as object
(street_name VARCHAR2(30),
house_no NUMBER);
In Oracle you can even have references to these
objects from other tables.

Is persistant objects and references to these objects
supported in PostgreSQL? If so can anyone point me to
the documentation for these?

Thanks,
Suresh

___________________________________________________________ALL-NEW Yahoo! Messenger - all new features - even more fun! http://uk.messenger.yahoo.com