The Viewpoint Mechanism for Object-oriented Databases Modelling, Distribution and Evolution

Benchikha, Fouzia; Boufaida, Mahmoud
June 2007
Journal of Computing & Information Technology;Jun2007, Vol. 15 Issue 2, p95
Academic Journal
Over the past years, most of the research dealing with the object multiple representation and evolution has proposed to enrich the monolithic vision of the classical object approach in which an object belongs to one hierarchy class. In databases, much work has been done towards extending models with advanced tools such as view technology, schema evolution support, multiple classification, role modelling and viewpoints. In particular, the integration of the viewpoint mechanism to the conventional object-oriented data model gives it flexibility and allows one to improve the modelling power of objects. The viewpoint paradigm refers to the multiple description, the distribution, and the evolution of object. Also, it can be an undeniable contribution for a distributed design of complex databases. The motivation of this paper is to define an object data model integrating viewpoints in databases and to present a federated database architecture integrating multiple viewpoint sources following a local-as-extended-view data integration approach.


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