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单选

对于关系数据库的规范化,下列说法中错误的是(24)。

  • A.第一范式规定了关系模式中的每个分量不可再分
  • B.若关系模式满足第二范式,则它也满足第一范式
  • C.关系数据库不必满足每一个范式,只要遵循一个范式就能正常工作
  • D.关系模式满足巴克斯范式时,关系中所有非主属性对每个码都完全函数依赖
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