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- W2481832950 abstract "This dissertation provides a new normal form, called Nested Normal Form (NNF), for nested relations. NNF precisely characterizes potential redundancy in nested relation schemes. In addition, if the nested relation schemes are flat, NNF is equivalent to 4th Normal Form and, when then are only functional dependencies, is equivalent to BCNF. The dissertation also gives a condition that can prevent an unwanted structural anomaly in nested relations, namely, embedded nested relations with at most one tuple. In addition, the dissertation gives algorithms to generate nested relation schemes in NNF from an ORM conceptual model. To better fit application characteristics, the dissertation also discusses ways to adjust the schemes based on the peculiarities of an application. Furthermore, the dissertation investigates the impact of NNF on physical data clustering. A heuristic algorithm based on NNF to cluster data for the frequently executed operations is presented." @default.
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- W2481832950 date "1996-01-01" @default.
- W2481832950 modified "2023-09-27" @default.
- W2481832950 title "Theoretical and practical implications of a new definition for nested normal form" @default.
- W2481832950 hasPublicationYear "1996" @default.
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