Istituto di Scienza e Tecnologie dell'Informazione     
Locuratolo E., Rabitti F. Conceptual classes and system classes in object databases. Internal note IEI-B4-33, 1994.
In this paper, we investigate the relationship between classes of objects defined at the semantic/conceptual level and classes of objects implemented at the system level, e.q., in object dat abase sys tems. We propose an algorithmic approach for mapping a schema definition at the conceptual level to a corresponding schema definition at the system level, where the database objects are partitioned into system classes. This will allow a more efficient implementation of languages based on conceptual classes of objects with genera lization h ierarch ies. The approach complexity and its SUitability for application to prac tica 1 cases are aIso discussed.
Subject classes
D.3.3 Language Constructs and Features. Classes and object

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