某销售公司数据库中的关系零件为P(Pno,Pname,Sname,City,Qty)，Pno表示零件号，Pname表示零件名称，Sname表示供应商，City表示所在地，Qty表示库存量。其函数依赖集F={Pno→Pname，(Pno,Sname)→Qty，Sname→City}。关系P为（ ），存在冗余度大、修改操作不一致、插入异常和删除异常的问题。若将P分解为（ ），则可以解决这一问题。
问题1选项
A.1NF
B.2NF
C.3NF
D.4NF
问题2选项
A.P1(Pname,Qty)、P2(Pno,Sname,City)
B.P1(Pname,Pname)、P2(Sname,City,Qty)
C.P1(Pno,Pname)、P2(Pno,Sname,Qty)、P3(Sname,City)
D.P1(Pno,Pname)、P2(Pno,Qty)、P3(Sname,City)、P4(City,Qty)
正确答案及解析
正确答案
解析
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