Abstract
Several notions motivated by the problem of classifying objects according to the values of their attributes were introduced and examined. We mention for example the logical kit of Semadeni [2], the information system of Pawlak [1], the context of Wille [3] and the probably most commonly known and applied relational database model of Codd [7]. From some points of view the above notions are equivalent or inter-translatable (see e.g. Wiweger [4], where the relation among logical kits, information systems and contexts is explained); of course there are important differences among them. In every of the models mentioned we have other classes of questions considered and areas of applications also do not coincide.
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References
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© 1994 British Computer Society
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Pomykala, J.A., de Haas, E. (1994). A Note on Categories of Information Systems. In: Ziarko, W.P. (eds) Rough Sets, Fuzzy Sets and Knowledge Discovery. Workshops in Computing. Springer, London. https://doi.org/10.1007/978-1-4471-3238-7_18
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DOI: https://doi.org/10.1007/978-1-4471-3238-7_18
Publisher Name: Springer, London
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