ISO 639-2:
ISO 639-2 is the second part of the ISO 639 standard, which lists codes for the representation of the names of languages. The three-letter codes given for each language in this part of the standard are referred to as "Alpha-3" codes. There are 464 language codes in the list.
The U.S. Library of Congress is the registration authority for ISO 639-2 (referred to as ISO 639-2/RA). As registration authority, the LOC receives and reviews proposed changes; they also have representation on the ISO 639-RA Joint Advisory Committee responsible for maintaining the ISO 639 code tables.
Work was begun on the ISO 639-2 standard in 1989, due to the fact that the ISO 639-1 standard, which gives two-letter codes for languages, would not be able to accommodate a sufficient number of languages. The ISO 639-2 standard was first released in 1998.
[edit] B and T codes
While most languages are given one code by the standard, twenty of the languages described have two three-letter codes, a "bibliographic" code (ISO 639-2/B), which is derived from the English name for the language and was a necessary legacy feature, and a "terminological" code (ISO 639-2/T), which is derived from the native name for the language. Each of these twenty languages is also included in the ISO 639-1 standard. (There were 22 B codes; scc and scr are now deprecated.)
In general the T codes are favored, e.g. ISO 639-3 uses ISO 639-2/T.
Contrary to that, ISO 15924 which, if possible, derives their codes from ISO 639-2, favours ISO 639-2/B.
[edit] Scopes and types
Scopes:
- Individual languages
- Macrolanguages
- Collections of languages
- Dialects
- Reserved for local use
- Special situations
Types (for individual languages):
- Living languages
- Extinct languages
- Ancient languages
- Historic languages
- Constructed languages
[edit] Special situations
There are codes for special situations:
- mis is listed as "uncoded languages"
- mul (for multiple languages) is applied when several languages are used and it is not practical to specify all the appropriate language codes
- The interval from qaa to qtz is reserved and is not used in the standard
- und (for undetermined) is used in situations in which a language or languages must be indicated but the language cannot be identified.
- zxx is listed in the code list as "no linguistic content" (added 2006-01-11)
[edit] Collective languages
Some ISO 639-2 codes that are commonly used for languages do not precisely represent a particular language or some related languages (as the above macrolanguages). They are regarded as collective languages (or collectives) and are excluded from ISO 639-3.
For a definition of macrolanguages and collective languages see [1].
Collective languages and their ISO 639-2 codes are:
[edit] Not obviously a collective in 639-2
Bihari (bih) is marked as collective but on the other hand has an ISO 639-1 code (bh) which should only be for individual languages. The reason is that individual Bihari languages received an ISO 639-2 code, which makes Bihari a language family for the purposes of ISO 639-2, but a single language for the purposes of ISO 639-1.
[edit] Obviously intending to cover several languages
[edit] See also
[edit] External links
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