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[单选题]
[单选题] E—R图转换为关系模型时，对于简单的1：N联系，该关系的码应 。（ ）
A
取N端实体码
B
取两端实体码组合
C
任意选取两端实体码
D
取1端实体码
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参考答案
试题答案：
A
答案解释：
E—R图转换为关系模型时，l：N联系应该取N端实体的码为关系的码。答案为A
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