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在数据管理技术发展过程中,文件系统与数据库系统的主要区别是数据库系统具有()

单选题
2021-09-01 20:45
A、特定的数据模型
B、数据无冗余
C、专门的数据管理软件
D、数据可共享
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正确答案
A

试题解析

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