Abstract
The relational database model is the most widely used in commercial systems. When we design a database, we must choose the attributes and properties that should appear in every relation. For this task, the concept of functional dependency (f.d) is a fundamental issue: roughly, the attributes which do not appear in a candidate key should not verify any kind of f.d. We extend this notion, for the case when the dependencies are not crisp but fuzzy. The use of linguistic labels will play a fundamental role in our approximation, so we advocate the spirit of computing with words in Zadeh’s sense.
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Cubero, J.C., Medina, J.M., Pons, O., Vila, M.A. (1999). Computing Fuzzy Dependencies with Linguistic Labels. In: Zadeh, L.A., Kacprzyk, J. (eds) Computing with Words in Information/Intelligent Systems 2. Studies in Fuzziness and Soft Computing, vol 34. Physica, Heidelberg. https://doi.org/10.1007/978-3-7908-1872-7_17
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DOI: https://doi.org/10.1007/978-3-7908-1872-7_17
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