1范围1。1 ISO/IEC 9594本部分定义的模型为ISO/IEC 9594其他部分提供了概念和术语框架，这些部分定义了目录的各个方面。1.2功能和组织模型定义了目录在功能和管理上的分布方式。1.3安全模型定义了在目录中提供安全功能（如访问控制）的框架。1.4信息模型描述了DIB的逻辑结构。从这个角度来看，目录是分布式的，而不是集中式的，这一事实是不可见的。ISO/IEC 9594的其他部分利用了信息框架的概念。 具体而言:（a）根据信息框架的概念对目录提供的服务进行了描述（在ISO/IEC 9594-3中）:这允许所提供的服务在一定程度上独立于DIB的物理分布；（b） 指定了目录的分布式操作（在ISO/IEC 9594-4中），以便提供该服务，并因此保持该逻辑信息结构，因为DIB实际上是高度分布式的。

1Scope1.1The models defined in this part of ISO/IEC 9594 provide a conceptual and terminological framework for the other parts of ISO/IEC 9594 which define various aspects of the Directory.1.2The functional and organizational models define ways in which the Directory can be distributed, both functionally and administratively.1.3The security model defines the framework within which security features, such as access control, are provided in the Directory.1.4The information model describes the logical structure of the DIB. From this viewpoint, the fact that the Directory is distributed, rather than centralized, is not visible. The other parts of ISO/IEC 9594 make use of the concepts of the information framework. Specifically:(a) the service provided by the Directory is described (in ISO/IEC 9594-3) in terms of the concepts of the information framework: this allows the service provided to be somewhat independent of the physical distribution of the DIB;(b) the distributed operation of the Directory is specified (in ISO/IEC 9594-4) so as to provide that service, and therefore maintain that logical information structure, given that the DIB is in fact highly distributed.