Abstract
The mathematical logic, supporting a database model, largely determines the behavior and interaction of the model on constraint satisfaction and on database querying. For traditional database models that only handle perfectly described data and do not explicitly deal with missing information, the classical two-valued Boolean logic is well suited: both integrity constraints and querying criteria can be described by Boolean expressions, which should evaluate to true in order to be satisfied.
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de Tré, G., de Caluwe, R. (2006). On the Applicability of Extended Possibilistic Truth Values in Flexible Database Modelling and Querying. In: Bordogna, G., Psaila, G. (eds) Flexible Databases Supporting Imprecision and Uncertainty. Studies in Fuzziness and Soft Computing, vol 203. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-33289-8_3
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DOI: https://doi.org/10.1007/3-540-33289-8_3
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