数据库模型提供了两级映象, 它们的作用是： -题库考试答案搜索网

数据库模型提供了两级映象, 它们的作用是：

单选题

2021-07-17 23:25

A、<span style=";font-family:宋体;font-size:14px">控制数据的冗余度</span></p><p></p>
B、<span style=";font-family:宋体;font-size:14px">实现数据的共享</span></p><p></p>
C、<span style=";font-family:宋体;font-size:14px">使数据结构化</span></p><p></p>
D、<span style=";font-family:宋体;font-size:14px">实现数据的独立性</span></p><p></p>

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正确答案

D

试题解析

标签：计算机网络技术高起专关系型数据库期末考试

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