Domain is an additional access control mechanism.
域是一种额外的访问控制机制。
They both share a lot of concepts and a domain — the domain of authentication, authorization, and access control.
它们有很多相同的概念，要处理的问题域也在很大程度上重叠：验证、授权和访问控制。
Access control within the portal domain is not based on the J2EE authorization model, because it is not powerful enough to be a viable solution for the portal authorization domain.
门户域中的访问控制没有基于J2EE授权模型，因为它不够强大，不足以成为可行的门户授权域解决方案。
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