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Dla systemu informacyjnego SI = (U, A), A={x1, x2, x3, x4, x5}, rdzeń zbioru at...
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Dla systemu informacyjnego SI = (U, A), A={x1, x2, x3, x4, x5}, rdzeń zbioru atrybutów A to Core(A)={x3, x4, x5}.
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