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下列不属于关系代数运算的是()。

单选题
2022-05-09 09:20
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试题解析

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逻辑运算符(AND、NOT、OR)的运算顺序是AND→OR→NOT。
●设AND、OR和NOT分别表示按位与、按位或和按位求反运算,且X=10011011,Y=01111010,Z=11101000,则(NOT(X) AND Y)= (9) , (Y OR NOT(Z))= (10) 。10011011011110101110100001100000(10)
逻辑运算符(AND、NOT、OR)的运算顺序是AND→OR→NOT。
布尔逻辑具体检索时,是通过三个布尔运算符来实现其功能的:AND、OR、()。
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