根据关系数据库规范化理论，关系数据库中的关系要满足第一范式，下面“部门”关系中，因 ______ 属性而使它不满足第一范式。
A．部门总经理
B．部门成员
C．部门名
D．部门号
参考答案：B
解析：[评析] 关系数据库的第一范式规定：关系中的每一个属性都是不可分割的。而本关系个，“部门成员”显然包括“部门总经理”，所以它是可分的。这样就不满足第一范式的条件。
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| There are many people in the world now. There 1 a lot more people next century. So the earth will be very 2 and there will be a little room for each person. Maybe there will be only 3 room on the earth in 600 years. That will be a very serious 4 . So man is 5 of a way to solve the problem. The moon is the satellite (卫星) of the earth. Man will probably go to 6 there some day. But there is no air, no plants and no life on the moon. So 7 are doing experiments in many ways. They 8 solve many problems 9 man can live on the moon. I'm sure our dream will 10 next century. Do you think so? | ||||
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