ISO/IEC 9594-1:2017 信息技术 开放系统互连 目录 第1部分：概念、模型和服务的综述

标准编号：ISO/IEC 9594-1:2017

中文名称：信息技术 开放系统互连 目录 第1部分：概念、模型和服务的综述

英文名称：Information technology — Open Systems Interconnection — The Directory — Part 1: Overview of concepts, models and services

发布日期：2017-05

标准范围

ISO/IEC 9594-1:2017提供了OSI应用程序、OSI管理过程、其他OSI层实体和电信服务所需的目录功能。它提供的功能包括“用户友好命名”，即可以通过适合人类用户引用的名称来引用对象（尽管并非所有对象都需要用户友好的名称）；以及“名称到地址映射”，它允许对象及其位置之间的绑定是动态的。例如，后一种功能允许OSI网络“自我配置”，即添加、删除和更改对象位置不会影响OSI网络的运行。ISO/IEC 9594-1:2017并不打算成为一个通用数据库系统，尽管它可以构建在这样的系统上。例如，我们假设，与通信目录的典型情况一样，“查询”的频率要比更新的频率高得多。更新速度预计将由人员和组织的动态控制，而不是网络的动态。也不需要即时的全球更新承诺；瞬态条件下，相同信息的新旧版本都可用，这是完全可以接受的。目录的一个特点是，除不同的访问权限或未传播的更新外，目录查询的结果将不依赖于查询者的身份或位置。该特性使得目录不适合某些电信应用，例如某些类型的路由。对于结果取决于查询者身份的情况，可能会拒绝访问目录信息和目录更新。

ISO/IEC 9594-1:2017 provides the directory capabilities required by OSI applications, OSI management processes, other OSI layer entities, and telecommunications services. Among the capabilities which it provides are those of "user-friendly naming", whereby objects can be referred to by names which are suitable for citing by human users (though not all objects need have user-friendly names); and "name-to-address mapping" which allows the binding between objects and their locations to be dynamic. The latter capability allows OSI networks, for example, to be "self-configuring" in the sense that addition, removal and the changes of object location do not affect OSI network operation.ISO/IEC 9594-1:2017 is not intended to be a general-purpose database system, although it may be built on such systems. It is assumed, for instance, that, as is typical with communications directories, there is a considerably higher frequency of "queries" than of updates. The rate of updates is expected to be governed by the dynamics of people and organizations, rather than, for example, the dynamics of networks. There is also no need for instantaneous global commitment of updates; transient conditions, where both old and new versions of the same information are available, are quite acceptable.It is a characteristic of the Directory that, except as a consequence of differing access rights or un-propagated updates, the results of directory queries will not be dependent on the identity or location of the inquirer. This characteristic renders the Directory unsuitable for some telecommunications applications, for example some types of routing. For cases where the results are dependent on the identity of the inquirer, access to directory information and updates of the Directory may be denied.

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