这篇文章描述了一种方法去提取和载入数据，而不威胁到数据的完整性。
This article describes a method to extract and load data without compromising data integrity.
数据完整性和合法存取会受到很多方面的安全威胁，包括密码策略、系统后门、数据库操作以及本身的安全方案。
Integrity and legitimate accessing of data will receive security threat in many ways, including password strategy, system backdoor, database operating and safety plan of itself.
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