Abstract
In this paper, object database schema design is addressed through the problem of designing the inheritance graph. We propose a method, called iO2, for building the inheritance graph of an O2 database schema. The iO2 method is based on the Galois lattice data structure. It encompasses three steps: a (first) construction step, a (second) optimization step, and a (final) generation step. This paper focuses on the two latter steps. The optimization step builds the Galois inheritance graph from the Galois graph (delivered by the construction step) of the finite binary relation associating properties to entity and relationship types. We define a new optimization algorithm which eliminates redundancies from the Galois graph. The generation step yields the O2 inheritance graph from the Galois inheritance graph.
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Yahia, A., Lakhal, L., Cicchetti, R. (1996). Building inheritance graphs in object database design. In: Wagner, R.R., Thoma, H. (eds) Database and Expert Systems Applications. DEXA 1996. Lecture Notes in Computer Science, vol 1134. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0034666
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DOI: https://doi.org/10.1007/BFb0034666
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