0引言SQL服务器作为信息处理的核心软件之一正日益广泛地应用于各种场合,在SQL服务器中有大量集中数据存放着,其中有些数据极可能是国家或单位的机密数据或重要数据,这些数据一旦被泄密或遭到破坏,将给国家或单位造成巨大损失,而这些数据正是通过SQL服务器存储和控制着,所以SQL服务器是计算机信息系统的核心,也是计算机技术及其应用发展的关键,是除操作系统之外最重要的核心系统,因此务必要保护好SQL服 0 Introduction SQL Server as one of the core information processing software is increasingly widely used in various occasions, there is a large number of centralized SQL Server data stored, some of which may most likely be the country or unit of confidential data or important data, these Once the data is compromised or destroyed, will cause great losses to countries or units, and these data is stored and controlled through the SQL server, SQL Server is the core of computer information systems, but also the key to the development of computer technology and its applications , Is the most important core system except the operating system, so be sure to protect the SQL service