View source for Social:ISO 639-5

{{Short description|Incomplete international standard for the codification of language families}}
'''ISO 639-5:2008''' "Codes for the representation of names of languages—Part 5: Alpha-3 code for [[Social:Language family|language families and groups]]" is a highly incomplete international standard published by the [[Organization:International Organization for Standardization|International Organization for Standardization]] (ISO).  It was developed by ISO Technical Committee 37, Subcommittee 2, and first published on May 15, 2008.  It is part of the [[ISO 639]] series of standards.

==Collective codes{{Anchor|Technical Content}}==

ISO 639-5 defines ''alpha-3'' (3-letter) codes, called "collective codes", that identify language families and groups.
As of the February 11, 2013 update to ISO 639-5, the standard defines 115 collective codes.<ref name="changehistory">{{cite web|title=ISO 639-5 Change Notice|work=Network Development & MARC Standards Office|publisher=Library of Congress|url=https://www.loc.gov/standards/iso639-5/changes.php|access-date=December 12, 2018}}</ref><ref>{{cite web|title=ISO 639-5 codes ordered by Identifier|work=Network Development & MARC Standards Office|publisher=Library of Congress|url=https://www.loc.gov/standards/iso639-5/id.php|access-date=December 12, 2018}}</ref>
The United States Library of Congress maintains the list of Alpha-3 codes that comprise ISO 639-5.<ref>{{cite web|title=ISO 639-5 Registration Authority|work=Network Development & MARC Standards Office|publisher=Library of Congress|url=https://www.loc.gov/standards/iso639-5/|access-date=December 12, 2018|date=February 18, 2009}}</ref>

The standard does not cover all language families used by linguists.  The languages covered by a group code need not be linguistically related, but may have a geographic relation, or category relation (such as ''Creoles'').

==Relationship to other parts of ISO 639==

Some of the codes in ISO 639-5 codes are also found in the [[Social:ISO 639-2|ISO 639-2]] "Alpha-3 code" standard.<ref>{{cite web|title=Annex A: Groups and remainder groups in ISO 639-2|work=Network Development & MARC Standards Office|publisher=Library of Congress|url=https://www.loc.gov/standards/iso639-5/annex.php|access-date=December 12, 2018}}</ref> ISO 639-2 contains codes for some individual languages, some [[Social:ISO 639 macrolanguage|ISO 639 macrolanguage]] codes, and some collective codes; any code found in ISO 639-2 is also found in either [[Social:ISO 639-3|ISO 639-3]] or ISO 639-5.

Languages, families, or group codes in ISO 639-2 can be of type "group" (''g'') or "remainder group" (''r''). A "group" consists of several related languages; a "remainder group" is a group of several related languages from which some specific languages have been excluded. However, in ISO 639-5, the "remainder groups" do ''not'' exclude any languages. Because ISO 639-2 and ISO 639-5 use the same Alpha-3 codes, but do not always refer to the same list of languages for any given code, the languages an Alpha-3 code refers to can not be determined unless it is known whether the code is used in the context of ISO 639-2 or ISO 639-5.
{| class="wikitable"
|+Examples of ISO 639-2 and ISO 639-5 code relationships
! Alpha-3 code !! ISO 639-2 type !! ISO 639-2 definition !! ISO 639-5 definition
|-
| {{code|afa}} || remainder group (r) || Afro-Asiatic languages || all Afro-Asiatic languages
|-
| {{code|alg}} || normal group (g) || all [[Social:Algonquian languages|Algonquian languages]] || all [[Social:Algonquian languages|Algonquian languages]]
|-
| {{code|sqj}} || ''not defined'' || ''not defined'' || Albanian languages
|}

==History==
The committee draft of ISO 639-5 was issued on February 23, 2005.  Voting on the draft terminated on July 5, 2005; the draft was approved.

In 2006, the target publication date for the final standard was set at October 30, 2007.  During the approval stage for the standard, the ISO final draft international standard ballot was not initiated until February 8, 2008.  Voting ended on April 10, 2008 ("stage 50.60").

The standard was published on May 15, 2008.

Updates were made in August 2008, February 2009, and February 2013.<ref name="changehistory" />

==Deficiencies==
The ISO 639-5 code-set represents a very tiny proportion of the language families and groups of the world.  A more complete attempt at coding was [[Social:ISO 639-6|ISO 639-6]] (withdrawn in 2014).

==References==
{{Reflist}}

==External links==
* {{Cite web|archive-url=https://web.archive.org/web/20060928120811/http://www.niso.org/international/SC4/N585.pdf|url=http://www.niso.org/international/SC4/N585.pdf|format=PDF|title=ISO 639 Registration Authority Report 2004–2005|work=www.niso.org|archive-date=September 28, 2006|publisher=National Information Standards Organization}}
* {{Cite mailing list | url=http://www.alvestrand.no/pipermail/ietf-languages/2004-August/002223.html|last=Constable|first=Peter|title=What's the plan for ISO 639-3 and RFC 3066 ter?|mailing-list=ietf-languages|date=August 20, 2004|access-date=August 23, 2010}}
* [https://www.iso.org/standard/39536.html ISO website for purchasing a copy of the ISO 639-5 standard]

{{ISO standards}}

{{DEFAULTSORT:Iso 639-5}}
[[Category:ISO 639]]
[[Category:Language identifiers]]

{{Sourceattribution|ISO 639-5}}