  Normalized relations extended with inherited attributes can be more faithful
to reality and support logical navigation free queries, properties available at
present only through specific views. Adding inherited attributes can be
nonetheless always less procedural than to define any such views. Present
schemes should even typically suffice for relations with foreign keys.
Implementing extended relations on popular DBSs appears also simple. Relational
model should evolve accordingly, for benefit of likely millions of DBAs,
clients, developers.
