题目内容：
下列关于设计全局E-R模型叙述错误的是( )
A．确定公共实体类型
B．局部E-R模型的合并
C．实体定义
D．消除冲突
参考答案：【答案仅供学习，请勿对照自行用药等】
选择题：下列关于设计全局E－R模型叙述错误的是( )
- 题目分类：习题答案
- 题目类型：选择题
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