  Today's astronomical projects need computational systems capable to store and
analyze large amounts of scientific data, to effectively share data with other
research Institutes and to easily implement information services to present
data for different purposes (scientific, maintenance, outreach, etc.). Due to
the wide scenario of astronomical projects there isn't yet a standardized
approach to implement the software needed to support all the requirements of a
project. The new approach we propose here is the use of a unified model where
all data are stored into the same data base becoming available in different
forms, to different users with different privileges.
