A multi policy access control model applied to ertos is brought forward , which integrates several access control policies 当前,对嵌入式实时操作系统访问控制技术的研究还处于起步阶段。
The paper first introduces several typical role _ based access control models , at the same time analyses and compares them 本文首先介绍了几种具有代表性的基于角色的访问控制模型,并对这几种访问控制模型进行了分析比较。
J2ee security mechanisms and role - based access control model with dynamic constraints are applied to maintain the security of web applications 应用j2ee安全机制和基于角色的动态受限访问控制模型来保障web应用的基本安全。
The thesis use role based access control model , design a set of logical data model and propose the basic algorithm for access database 在数据访问控制方面采用了基于角色的安全策略,设计了数据访问控制的逻辑模型和基本方法。
3 . access conirol in collaborative design an access control model is presented in this thesis which is also based on the ft hierarchical structure model ( 3 )协同设计中的访问控制对访问控制机制进行了研究,提出一个基于树形层次结构的访问控制模型。