[LLJ99] Processus d'optimisation conceptuelle d'un schéma orienté-objet
Revue Nationale avec comité de lecture :
Journal L'Objet,
vol. 5(1), 1999
motcle:
Résumé:
This paper presents first a state of the art
concerning processes
for reorganizing inheritance hierarchies and
then describes our proposition
which concerns more precisely Is_A hierarchies
in conceptual schemas of
object-oriented databases. Our process is a
two-steps one. First, a normalized
schema is derived, containing all the possible IS-A
inheritances, according to
applicability constraints. Then, the process
executes groupings, defined by the
designer, by deleting the relevant inheritance
links and replacing them by
applicability constraints in order to preserve
the initial schema semantics.