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问题详情

以下各描述中,( )不是关系的基本性质。

A、元组分量必须取原子值

B、行、列的顺序无所谓

C、关系模式必须达到3NF

D、任意两行不能全同

时间：2021-09-01 16:43 关键词：青书学堂平顶山学院计算机网络技术数据库 (高起专)

答案解析

C

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