针对著名的 RBAC96模型的不足之处 ，结合私有权限、部门权限和权限属性变化等问题 ，对角色权限及角色层次关系进行了分析 ，提出了一个改进的角色层次化关系模型 。
In this paper, we introduce the role-based access control model, analyse the role hierarchy model and the problem of private permissions in RBAC96, and point out the disadvantage of Sandhu s solution.
管理者必须具备一个重要的新技能，即是学习与公共部门管理人员和监督人员合作，因为他们在商务领域的权限已大幅扩展了。
A critical new skill is learning to work with regulators and other public-sector executives whose role in business has vastly expanded.
然后，当属于这两个部门的任何员工经过了系统的身份验证后，就会向其授予“legal”角色，系统会向其提供恰当的访问权限。
Then, when any employee from either department authenticates to the system, they will be assigned the role of "legal", and the system will provide them with the appropriate access.
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