RFC5141 A Uniform Resource Name (URN) Namespace for the InternationalOrganization for Standardization (ISO)
5141 A Uniform Resource Name (URN) Namespace for the InternationalOrganization for Standardization (ISO). J. Goodwin, H. Apel. March 2008. (Format: TXT=57820 bytes) (Status: INFORMATIONAL)
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Network Working Group J. Goodwin Request for Comments: 5141 H. Apel Category: Informational ISO March 2008 A Uniform Resource Name (URN) Namespace for the International Organization for Standardization (ISO) Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This document describes a Uniform Resource Name Namespace Identification (URN NID) for the International Organization for Standardization (ISO). This URN NID is intended for use for the identification of persistent resources published by the ISO standards body (including documents, document metadata, extracted resources such as standard schemata and standard value sets, and other resources). Goodwin & Apel Informational [Page 1] RFC 5141 ISO URN Schema March 2008 Table of Contents 1. Introduction ....................................................2 2. Specification Template ..........................................4 2.1. Namespace ID ...............................................4 2.2. Registration Information ...................................4 2.3. Declared Registrant of the Namespace .......................4 2.4. Declaration of Structure ...................................4 2.4.1. Definition ..........................................4 2.4.2. Examples ...........................................12 2.5. Relevant Ancillary Documentation ..........................15 2.6. Identifier Uniqueness Considerations ......................15 2.7. Identifier Persistence Considerations .....................15 2.8. Process for Identifier Resolution .........................16 2.9. Rules for Lexical Equivalence .............................16 2.10. Conformance with URN Syntax ..............................17 2.11. Validation Mechanism .....................................17 2.12. Scope ....................................................17 3. Namespace Considerations .......................................17 4. Community Considerations .......................................18 5. IANA Considerations ............................................20 6. Security Considerations ........................................20 7. References .....................................................21 7.1. Normative References ......................................21 7.2. Informative References ....................................21 Appendix A. Alternative Naming Schemes ............................23 Appendix B. ABNF Definition of Namespace ID = "iso" (Informative) .........................................24 1. Introduction The International Organization for Standardization (ISO) was created by international agreement in 1947. ISO is a network of the national standards institutes of many countries, on the basis of one member per country, with a Central Secretariat in Geneva, Switzerland, that coordinates the system. ISO acts as a bridging organization in which a consensus can be reached on solutions that meet both the requirements of business and the broader needs of society, such as the needs of stakeholder groups like consumers and users. Further information is provided at http://www.iso.org/iso/about.htm. The core mission of ISO is to develop technical standards constituting technical agreements that provide the framework for compatible technology worldwide. ISO standards contribute to making the development, manufacturing, and supply of products and services more efficient, safer, and cleaner. They make trade between countries easier and fairer. Goodwin & Apel Informational [Page 2] RFC 5141 ISO URN Schema March 2008 Every participating ISO member institute (full members) has the right to take part in the development of any standard that it judges to be important to its country's economy. No matter what the size or strength of that economy, each participating member in ISO has one vote. ISO's activities are thus carried out in a democratic framework where each country is on an equal footing to influence the direction of ISO's work at the strategic level, as well as the technical content of its individual standards. Although the ISO standards are voluntary, the fact that they are developed in response to market demand, and are based on consensus among the interested parties, ensures widespread applicability of the standards. Consensus, like technology, evolves and ISO takes account of both evolving technology and evolving interests by requiring a review of its standards at least every five years to decide whether they should be maintained, updated, or withdrawn. ISO publishes International Standards and other technical specifications that are cited in the definitions of required or expected practices in many industries in many nations. These specifications contain dictionaries of standard terms, catalogues of reference values, definitions of formal languages, formal schemata for information capture and exchange, specifications for standard practices, and other information resources of general use to international trade and industry. ISO wishes to create and manage globally unique, persistent, location-independent identifiers for these resources. This specification defines the syntax for URNs that identify documents developed by the International Organization for Standardization (ISO) in accordance with the standards development procedures defined in the ISO/IEC Directives, Part 1 [ISODIR-1] and the ISO supplement [ISODIR-S] and processed by the ISO Central Secretariat. The syntax extends to identify document metadata and resources related to these documents or otherwise associated with them. It does not extend to products derived from these documents and published by ISO (e.g., handbooks, compendia) or documents at or below the Technical Committee level. Revisions of this specification may define syntax for URNs in this namespace that identify other ISO objects, when the ISO community defines a requirement for such identifiers. Goodwin & Apel Informational [Page 3] RFC 5141 ISO URN Schema March 2008 2. Specification Template 2.1. Namespace ID "iso" 2.2. Registration Information Version 2.1 Date: 2007-12-13 2.3. Declared Registrant of the Namespace J. Goodwin ISO Central Secretariat International Organization for Standardization (ISO) Case Postale 56 CH-1211 Geneva 20 Switzerland E-mail: goodwin@iso.org 2.4. Declaration of Structure 2.4.1. Definition The Namespace Specific Strings (NSSs) of all URNs assigned by ISO will conform to the syntax defined in Section 2.2 of [RFC2141]. The NSS has the following ABNF [RFC5234] specification: NSS = std-nss All URNs conforming to this specification begin the NSS with the prefix "std:" to denote the restriction to documents developed by the ISO standards development procedures as defined in the ISO/IEC Directives, Part 1 [ISODIR-1] and the ISO Supplement [ISODIR-S]. Prefixes that identify ISO objects of other kinds may be defined in future revisions of this specification. std-nss = "std:" docidentifier *supplement *docelement [addition] The prefix "std:" distinguishes an. An identifies the ISO document that is designated by the , as extended or modified by any identified . (An that identifies all parts of a multipart ISO document is a special case as described under the Goodwin & Apel Informational [Page 4] RFC 5141 ISO URN Schema March 2008 element .) If the contains an element, the NSS identifies a resource extracted from the ISO document or otherwise associated with it (see below). docidentifier = originator [":" type] ":" docnumber [":" partnumber] [[":" status] ":" edition] [":" docversion] [":" language] provides the complete identification of an ISO document. Each of its component elements is described below. originator = "iso" / "iso-iec" / "iso-cie" / "iso-astm" / "iso-ieee" / "iec" is the organization (usually an international body) from which a document emanates. Current values: iso = International Organization for Standardization iec = International Electrotechnical Commission (IEC), or Commission Electrotechnique Internationale iso-iec = jointly developed by ISO and IEC iso-cie = jointly developed by ISO and the Commission Internationale d'Eclairage (CIE) iso-astm = jointly developed by ISO and the American Society for Testing and Materials (ASTM) International iso-ieee = jointly developed by ISO and the Institute for Electrical and Electronics Engineers (IEEE) Revisions of this specification may define additional values. type = "data" / "guide" / "isp" / "iwa" / "pas" / "r" / "tr" / "ts" / "tta" designates the ISO deliverable type. If the element is not present, the classification is "international standard". Other current values: data = Data (document type no longer published) guide = Guide Goodwin & Apel Informational [Page 5] RFC 5141 ISO URN Schema March 2008 isp = International Standardized Profile iwa = International Workshop Agreement pas = Publicly Available Specification r = Recommendation (document type no longer published) tr = Technical Report ts = Technical Specification tta = Technology Trends Assessment docnumber = DIGITS is the reference number assigned to the document by ISO and/or IEC. An ISO document may comprise a single document, or two or more separate parts each of which is identified by . partnumber = "-" 1*( DIGIT / ALPHA / "-" ) is the reference number that identifies a part of a multipart standard. Where it is required to refer to a multipart ISO document in its entirety, this can be designated by omitting the element. However, this precludes the possibility of using any further elements except . NOTE: The option to refer to a multipart ISO document by omitting the element has been included to align with the provision in the ISO/IEC Directives, Part 2, 2004 [ISODIR-2] subclause 6.2.2 of making an undated reference to all parts of an ISO document. It is only permissible to use this option where the URN is referring to a multipart ISO document in its entirety. Since the use of this option precludes the designation of the elements and , it is implicit that the URN needs to remain valid irrespective of any future changes to the multipart document (see the rules for undated references given in the ISO/IEC Directives, Part 2, 2004 [ISODIR-2] subclause 6.6.7.5.2). This shall be taken into consideration in the use (and maintenance) of any URN specification employing this option. Goodwin & Apel Informational [Page 6] RFC 5141 ISO URN Schema March 2008 NOTE: In the case where the multipart document comprises different types of ISO deliverable, the of the core part (usually part 1) applies. See the example "Reference to a resource related to all parts of a multipart document". Except for the case where it is required to refer to a multipart document in its entirety, the element is required if the identified resource is a part of an ISO document. Otherwise, this element is not used. status = ( "draft" / "cancelled" ) / stage indicates the publication status of the document. When the element is not present, the NSS refers to a published document. Other values: draft = document that has not yet been accepted for publication by international ballot cancelled = document that has been deleted or withdrawn stage = "stage-" stagecode ["." iteration] indicates the stage code and iteration of the document. stagecode = DIGIT DIGIT "." DIGIT DIGIT is the harmonized stage code in accordance with ISO Guide 69:1999, "Harmonized Stage Code system (Edition 2) -- Principles and guidelines for use" [ISOGUIDE69]. iteration = "v" DIGITS is a sequential number that refers to a specific iteration of the project's lifecycle through the designated stage. If no is specified, the reference is to the highest iteration available for the specified stagecode. NOTE: In the ISO Central Secretariat project management database, the is referred to as the "project version". edition = "ed-" DIGITS designates a specific edition of the document. (DIGITS is the (sequential) edition number.) If no is specified, the NSS refers to the latest edition. Goodwin & Apel Informational [Page 7] RFC 5141 ISO URN Schema March 2008 docversion = "v" (simpleversion / isoversion) simpleversion = DIGITS designates the version number of a document's . It is altered by correction (corrected version; Technical Corrigendum) or amendment (Amendment; Addendum) and is distinct from a revision, which changes the edition number. In the , the first version published is 1, and each subsequent correction or amendment increases the version number by 1. If no is specified, the reference is to the highest version number available for the denoted . Current values of : 1 - first version published 2 - corrected version published isoversion = baseversion *includedsuppl baseversion = DIGITS includedsuppl = "-" suppltype supplnumber [ "." supplversion ] An can be linked to a simpleversion by defining an existing simpleversion as baseversion and listing all the elements (corrections and amendments) incorporated into that version. Examples for the (internal ISO version) scheme: 1 = first version of standard 1-amd1.v1 = first version of standard incorporating first version of Amendment 1 1-amd1.v1-amd2.v1 = first version of standard incorporating first version of Amendment 1 and first version of Amendment 2 1-amd1.v2-amd2.v1-amd3 = first version of standard incorporating corrected version of Amendment 1, first version of Amendment 2, and highest version of Amendment 3 Goodwin & Apel Informational [Page 8] RFC 5141 ISO URN Schema March 2008 1-cor3 = first version of standard incorporating highest version of Technical Corrigendum 3 1-amd1-cor3 = first version of standard incorporating highest version of Amendment 1 and highest version of Technical Corrigendum 3 language = monolingual / bilingual / trilingual monolingual = "en" / "fr" / "ru" / "es" / "ar" bilingual = "en,fr" / "en,ru" / "fr,ru" trilingual = "en,fr,ru" designates the official ISO language(s), or the language of an official translation, in which the document (object) is processed and published by ISO (excluding languages that constitute only specific elements of the content). The value is one or more alpha-2 codes, each of which designates a language, as specified in ISO 639-1 [ISO639-1]. If no language element is specified, is assumed. NOTE: Although [ISO639-1] recommends that language codes be written in lowercase, this ABNF definition allows the use of uppercase language codes because in ABNF [RFC5234], terminal symbols defined as literal strings are explicitly case-insensitive. This case distinction does not carry any meaning (see Section 2.9) and it is recommended to use language codes in lowercase. For additional information about the usage of language tags in information objects, see [RFC4646]. supplement = ":" suppltype ":" supplnumber [":" supplversion ] [":" language ] suppltype = "amd" / "cor" / "add" supplnumber = DIGITS supplversion = "v" DIGITS designates a technical alteration of or addition to an ISO standard that does not result in a new or . Each may be one of the three types, designated by : Goodwin & Apel Informational [Page 9] RFC 5141 ISO URN Schema March 2008 amd = Amendment -- a document that alters and/or adds to previously agreed upon technical provisions in an existing ISO document; an amendment is subject to acceptance by ballot in accordance with the ISO/IEC Directives, Part 1, 2004 [ISODIR-1] subclause 2.10.3 cor = Technical Corrigendum -- a document that corrects a technical error or ambiguity, or updates the ISO document in such a way that the modification has no effect on the technical normative elements; a Technical Corrigendum is not balloted -- see the ISO/IEC Directives, Part 1, 2004 [ISODIR-1] subclause 2.10.2 add = Addendum -- (document type no longer published) Addenda were documents that changed (by correction, addition, or deletion) the technical requirements of an ISO document; an addendum was subject to acceptance by ballot in accordance with the ISO/IEC Directives, Part 1. (Addenda are included in this RFC because some of them are still valid.) Supplements are numbered consecutively per ISO document, and within each supplement type. identifies the number of the supplement. designates the version of a published supplement. At present, only two versions are used in practice: when a supplement is published, it is version 1. If that supplement is subsequently corrected by issuing a corrected version, as designated by the term "Corrected" on the cover page together with a date, the corrected version is version 2. The language of a supplement can be different from that of the document. For example, a supplement may apply to only one of the languages of a bilingual document. For such cases, the language of a supplement can be identified using the element defined above. The interpretation is the same, except that it applies only to the supplement. docelement = ":" ( "clause" / "figure" / "table" / "term" ) ":" elementnumber / elementrange *( "," elementnumber / elementrange ) elementnumber = ( ALPHA / DIGITS ) *( "." DIGITS ) elementrange = elementnumber "-" elementnumber Goodwin & Apel Informational [Page 10] RFC 5141 ISO URN Schema March 2008 identifies one or more numbered subdivisions of a document. Types of numbered subdivision are specified in the ISO/ IEC Directives, Part 2 [ISODIR-2]. This RFC currently specifies forms for reference to clauses, figures, tables, and terms only. It does not provide for reference to subfigures. Revisions of this specification may define additional values. represents the selection of one or more clauses or subclauses of the document. represents the selection of one or more figures of the document.