In rdbms_common.py and back_anydbm is Node missing in 
the import line.


This:


from roundup.hyperdb import String, Password, Date, 
Interval, Link, \


    Multilink, DatabaseError, Boolean, Number


Should be:


from roundup.hyperdb import String, Password, Date, 
Interval, Link, \


    Multilink, DatabaseError, Boolean, Number, Node