每个数据库管理系统都必须能保护数据不会受到未授权访问和修改。

Every database management system must be able to protect data against unauthorized access and modification.

youdao

每个数据库管理系统都必须能保护数据不会受到未授权访问和修改。

Every database management system must be able to protect data against unauthorized access and modification.

youdao