题目内容 (请给出正确答案)
提问人:网友d*******1 发布时间:2022年5月2日 00:38
[单选题]

下列关于数据库系统的叙述中,不正确的是______

A . 数据库系统中的数据是有结构的B . 数据库系统减少了数据冗余C . 系统提供数据的安全性和完整性功能控制D . 数据库系统避免了数据冗余

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