【摘要】 存储在数据库中的数据必须具有安全保证。为此,DBMS提供了安全管理技术。安全性策略是DBMS实现安全管理的基本技术。文章较详细地介绍了Oracle9i数据库管理系统的安全管理技术中的安全性策略。这些策略涉及系统安全性策略、数据安全性策略和用户安全性策略。进一步地介绍了数据库验证、外部验证、企业验证和并发许可等用户验证和许可限制。上述安全技术构成了Oracle9i数据库安全管理技术的基础,也是DBA必须掌握的基本技术。文章最后给出Oracle9i安全策略的优点。更多还原

【Abstract】 The data stored in Database must be guaranteed the secure. Therefore DBMS supply the technology of security management. Security policies are the basic technology that DBMS obtain security management. This paper particularly introduces security policies of security management for Database management system of Oracle 9i. These policies are policies integrated of system security, data security and user security, and introduce the authentication of Database, exterior, enterprise and user and the permission restriction, all these security technologies above consist of the foundation of the security management technology for Oracle 9i DBMS and they are also the basic technologies that DBA need predominate. Finally the article presents the excellences of security policies on Oracle 9i更多还原