Abstract
In this paper we present a simple object oriented data model, GENERAL, where the facilities of specifications of a database are extended so that in the same data model the two types of abstractions can coexist: specialization and generalization. We will show that support of generalization in addition to specialization is an important alternative. First to avoid database reorganizations, due especially to schema modification to create a superclass by generalization of existing ones since these are expensive and extremely time consuming operations. Second to avoid reorganizations by reducing schema transformations by using generalization. Finally the possibility of reusing existing database schema, objects and programs is guaranteed.
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Beldjilali, T. (1996). Generalization Without Reorganization in a Simple Object Oriented DBMS. In: Cheung, Ty., Fong, J., Siu, B. (eds) Database Reengineering and Interoperability. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-1803-7_9
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DOI: https://doi.org/10.1007/978-1-4615-1803-7_9
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