系统采用了基于角色的访问控制策略，进一步保证了系统的安全。
The system adopts the Role Based Access Control to ensure the security of the system.
该模型采用基于角色的访问控制策略，实现了各业务系统间的一次登录、统一认证、统一权限管理和业务漫游功能。
And, it implements single sign-on, uniform authentication, uniform authorization management and business systems roam between different application systems.
例如，存在这样一个访问控制策略，其允许担当客户服务代表角色的所有用户执行客户管理操作。
For example, there is an access control policy that allows all users that fulfill the customer Service Representative role to perform customer management operations.
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