Together, the default role and default policy make up the default authorization: the implicit rule of access on the cube for users with no explicit rule of access.
默认角色和默认策略共同构成默认授权：多维数据集上针对没有显式访问规则的用户的隐式访问规则。
Interceptors use your application's access control policy to make authorization decisions.
拦截器使用应用程序的访问控制策略来做出授权决定。
XACML builds on SAML by providing the actual semantics used to define access control policy and authorization request and response messages.
XACML构建于SAML之上，提供了用于定义访问控制和授权请求及响应消息的实际语义。
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