%0 Journal Article
%T A Secure Policy Model for Secure Database System Based on Extended Object Hierarchy<br>基于扩展客体层次结构的安全数据库策略模型
%A CHENG Wan-Jun
%A ZHANG Xia
%A LIU Ji-Ren
%A <br>程万军
%A 张霞
%A 刘积仁
%J 软件学报
%D 2003
%I 
%X Security policy model is the groundwork for secure or trusted system. Bell-LaPadula model with its good adaptability has comprehensive applications to multilevel security system, but it is short of the rules about integrity and consistency. Based on that model, an extended policy model is proposed, which is founded on the extended object hierarchy. By this way, the integrity becomes one of the inherence properties of the model. The object domains, extended security axioms and operation rules are also introduced or redefined. The proposed model more suits the requirements of multilevel security databases, and guarantees the consistency among policy model, system specification and other high-level security model. The extensions and enhancements, especially other properties besides security, are the necessary steps for transforming a policy model into a practical system.
%K security policy
%K security model
%K database security
%K multilevel security
%K object integrity
%K object hierarchy<br>安全策略
%K 安全模型
%K 数据库安全
%K 多级安全
%K 客体完整性
%K 客体层次结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=71CC20029638589D&yid=D43C4A19B2EE3C0A&vid=F3583C8E78166B9E&iid=94C357A881DFC066&sid=2F26E27A20AEB31F&eid=CFC2B32D03D9F610&journal_id=1000-9825&journal_name=软件学报&referenced_num=0&reference_num=11