F2Concept, a Database System for Managing Classes' Extensions and Intensions
Gilles Falquet, Michel Léonard, Jeanne Sindayamaze · Archive ouverte UNIGE (University of Geneva) · 1994
This paper introduces the F2 Concept database system that is an extension of the F2 object-oriented system.The main feature of F2 Concept is its ability to represent intensional information about database classes.Intensional information, usually found in terminological databases, is useful for database modelling, operation, and evolution.A description of how this kind of information is represented and stored is given as well as how to use it in conjunction with extensional information represented by objects.This constitutes a new approach for databases that consists in managing not only objects of classes but also descriptions of the exact semantics of classes.