Semantics and implementation of schema evolution in object-oriented databases
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In this paper we study the logical and computational properties of schema evolution and versioning support in object-oriented databases. To this end, we present the formalisation of a general model for an object base with evolving schemata and define the semantics of the provided schema change operations. We will then sketch how the encoding of such a framework in a suitable Description Logic will allow the introduction and solution of interesting reasoning tasks at global database and single schema version levels.