信息和文献工作.参考文献.电子文件或有关章节

详细信息   

• 中文主题词：计算机软件 ; 数据处理 ; 情报处理 ; 句法 ; 文献描述 ; 文献 ; 数据布置 ; 名称与符号 ; 数字标志 ; 数据介质 ; 数据处理(软件) ; 数据媒体 ; 电子存储器 ; 图书馆学与情报学 ; 参考文献 ; 情报业务
• 标准号：BS ISO 690-2-1998
• 发布日期：1998-12-15
• 英文题名：Information and documentation - Bibliographic references - Electronic documents or parts thereof
• 英文主题词：Bibliographic records ; Bibliographic references ; Definition ; Definitions ; Documentations ; Documents ; Electronic ; Information ; Library science ; Specification (approval)
• 标准状态：现行
• 发布单位：GB-BSI
• 实施日期：1998-12-15
• 国际标准分类号：01.140.20
• 载体形态：28P.;A4
• 中国标准分类号：A14
• 国别：英国标准学会

文摘

This part of ISO 639 provides a code, published by the Registration Authority of ISO 639-3, consisting of language code elements comprising three-letter language identifiers for the representation of languages. The language identifiers according to this part of ISO 639 were devised for use in a wide range of applications, especially in computer systems, where there is potential need to support a large number of the languages that are known to have ever existed. Whereas ISO 639-1 and ISO 639-2 are intended to focus on the major languages of the world that are most frequently represented in the total body of the world's literature, this part of ISO 639 attempts to provide as complete an enumeration of languages as possible, including living, extinct, ancient and constructed languages, whether major or minor, written or unwritten. As a result, this part of ISO 639 deals with a very large number of lesser-known languages. Languages designed exclusively for machine use, such as computer-programming languages and reconstructed languages, are not included in this code. Knowledge of the world's languages at any given time is never complete or perfect. Additional language identifiers may be created for this list when it becomes apparent that there is a linguistic variety that is deemed to be distinct from other languages in accordance with the definitions in Clause 3 and their elaboration in Clause 4. In addition, the denotation of existing identifiers may be revised or identifiers may become deprecated when it becomes apparent that they do not accurately reflect actual language distinctions. In all such changes, careful consideration is given to minimize adverse effects on existing implementations.