標準號：ISO/IEC TR 20943-3-2004
中文標準名稱：信息技術.實現元數據注冊(MDR)內容一致性的規程.第3部分:值域
英文標準名稱：Information technology - Procedures for achieving metadata registry content consistency - Part 3: Value domains
標準類型：L70
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：L70
國際標準分類號：35.040
適用范圍：1.1 BackgroundAn ISO/IEC 11179 metadata registry (MDR) is a tool for the management of shareable data; a comprehensive,authoritative source of reference information about data. It supports the standardization and harmonizationprocesses by recording and disseminating descriptions of data, which facilitates data sharing amongorganizations and users. It provides links to documents that refer to specific data elements, value domains,and classification schemes and to information systems where those objects are used. When used inconjunction with a database, the registry enables users to understand any information obtained from thedatabase better.A registry does not contain data itself. It contains the metadata that is necessary to clearly describe, inventory,analyse, and classify data. It provides an understanding of the meaning, representation, and identification ofunits of data. This International Standard identifies the information elements that need to be available fordetermining the meaning of data to be shared between systems.1.2 PurposeThe purpose of this Technical Report is to describe a set of procedures for the consistent registration of valuedomains and their attributes in a registry. This Technical Report is not a data entry manual, but a user’s guidefor conceptualizing a value domain and its components for the purpose of consistently establishing goodquality metadata. An organization may adapt and/or add to these procedures as necessary.1.3 Limits of this Technical ReportThe scope of this Technical Report is limited to value domains, conceptual domains, and their associatedattributes and relationships. Examples are used throughout the TR to illustrate the concepts described.1.4 Registration approach — value domains and data elementsThere is a choice when registering value domains in an MDR. Some Registration Authorities treat these setsas value domains, and others treat them as data elements. For the purposes of this Technical Report, thechoice will always be to treat the sets as value domains unless explicitly stated. This choice is made to helpillustrate the way to register many different kinds of value domains.