权限管理是保证数据安全的必要条件。
The authority management is one of the necessary conditions to guarantee the data safety.
数据加密是保证数据安全的有效方法。
Data encryption is an effective way to ensure data security.
信息系统的权限管理是保证数据安全的必要条件。
The authority management in information systems is one of the necessary conditions to guarantee the data safety.
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