要保护数据，最好是管理自己的专用密钥。
To protect the data, you may want to manage your own private keys.
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.
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.
应用推荐