title: type-safe relaxing of schema consistency rules for flexible modeling in oodbms. authors: e amiel , m bellosta , e dujardin , e simon. venue: vldb j.. year: 1996
title: type-safe relaxing of schema consistency rules for flexible modelling in oodbms. authors: e amiel , mj bellosta , e dujardin , e simon. venue: the vldb journal the international journal on very large & hellip ; ,. year: 1996.0