( 5 )下列不属于非平凡函数依赖的是A ) ( CustomerID,ProviderID,BuyDate ) → GoodsNameB) (Cust

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( 5 )下列不属于非平凡函数依赖的是

A ) ( CustomerID,ProviderID,BuyDate ) → GoodsName

B) (CustomerID,ProviderID,BuyDate) → GoodsName,ProviderID

C ) ( CustomerID,ProviderID,BuyDate ) → GoodsClassID

D ) ( CustomerID,ProviderID,BuyDate ) → ProviderID

参考答案:

D

计算机四级