ISO 2709

ISO 2709 is an ISO standard for bibliographic descriptions, entitled "Format for Bibliographic Information Interchange on Magnetic Tape."

It is maintained by the Technical committee for Information and documentation (TC 46).

History

A format for the exchange of bibliographic information, it was developed in the 1960s under the direction of Henriette Avram of the Library of Congress to encode the information printed on library cards. It was first created as ANSI Standard Z39.2, one of the first standards for information technology, and called "Information Interchange Format." The latest edition of that standard is Z39.2-1994 (ISSN: 1041-5653). The ISO standard supersedes Z39.2. As of 2005 the current standard is ISO 2709:1996.

Basic Structure

A ISO 2709 record has four sections:
* Record label - the first 24 characters of the record. This is the only portion of the record that is fixed in length. The record label includes the record length and the base address of the data contained in the record. It also has data elements that indicate how many characters are used for indicators and subfield identifiers. (See Variable Fields, below)
* Directory - the directory provides the entry positions to the fields in the record, along with the field tags. A directory entry has four parts and cannot exceed nine characters in length:
** Field tag (3 characters)
** Length of the field
** Starting character position of the field
** (Optional) Implementation-defined part
* Datafields - a string containing all field and subfield data in the record.
* Record separator - a single character (IS3 of ISO 646)

Note that although tags are often displayed as labels on bibliographic fields and each bibliographic field has an associated tag, the tags are stored in the directory not in the bibliographic field.

Fields

There are three kinds of fields in the ISO 2709 record:
* Record identifier field - identifying the record and assigned by the organization that creates the record. The record identifier field has tag 001.
* Reserved fields - Reserved fields supply data which may be required for the processing of the record. Reserved fields always have a tag in the range 002-009 and 00A to ZZZ.
* Bibliographic Fields - these are in the range 010-999 and 0AA to ZZZ. The bibliographic fields contain data and a field separator (IS2 of ISO 646). They can also have these optional sub-parts:
** Indicator (0-9 characters, as coded in the Leader) - Indicators generally provide further information about the contents of the field, the relationship between the field and other fields in the record, or about action required in certain data manipulation processes (including display labels).
** Identifier (0-9 characters) - This identifies data within the bibliographic field. Where used, identifiers are composed of a delimiter (1 char, IS1 of ISO 646) and an identifying code (1-9 chars, as defined in the leader), plus a variable length string containing the data.

Example

MARC21 library cataloging record coded in ISO 2709 format. MARC21 is an instance of ISO 2709 that has the following characteristics:
* tags are in the range 002-999 only
* there is a two-character indicator on each field, and each character is a separately defined data element
* the identifier within data fields (called "subfield code" in MARC21) is a single ASCII character preceded by IS1 of ISO 646.

00667cam 2200193u 4500001000800000005001700008008004100025035002100066906004500087010001700132040001900149050001800168 100004700186245002200233260003800255300006800293700006900361991004300430�8316633�20010813124442.0�830714s1939 enkaf j 000 0 eng � �9(DLC) 40031947� �a0�bcbc�cpremunv�du�encip�f19�gy-gencatlg� �a 40031947 � �aDLC�cCarP�dDLC�00�aPZ8.B327�bWh2�1 �aBaum, L. Frank�q(Lyman Frank),�d1856-1919.�14�aThe wizard of Oz,� �aLondon,�bHutchinson & co.�c [1939] � �a3 p.l., 208 p.�bfront., illus., plates (part col.)�c24 x 18 cm.�1 �aDenslow, William Wallace,�d1856-1915, [from old catalog] �eillus.� �bc-GenColl�hPZ8.B327�iWh2�tCopy 1�wPREM��

ee also

*MARC - MARC is a standard for coding library cataloging data using ISO 2709.

External links

*http://www.iso.org/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=7675
* [http://www.loc.gov/marc/specifications/spechome.html MARC21 specifications]


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Iso 2709 — La norme ISO 2709 (ICS n°34.240.30) est une norme internationale (ISO) qui définit un format d échange informatique de notices bibliographiques. Sa première édition date de 1973. Bien que généralement utilisée conjointement avec des données… …   Wikipédia en Français

  • ISO 2709 — es un estándar ISO para la descripción bibliográfica, titulado Formato de intercambio para información bibliográfica en casetes (en inglés Format for Bibliographic Information Interchange on Magnetic Tape. Es mantenido por el comité técnico para… …   Wikipedia Español

  • ISO 2709 — La norme ISO 2709 (ICS n°34.240.30) est une norme internationale (ISO) qui définit un format d échange informatique de notices bibliographiques. Sa première édition date de 1973. Bien que généralement utilisée conjointement avec des données… …   Wikipédia en Français

  • ISO 2709:1996 — изд.3 C TC 46/SC 4 Информация и документация. Формат для информационного обмена раздел 35.240.30 …   Стандарты Международной организации по стандартизации (ИСО)

  • Iso 216 — Dimensions ISO 216 (mm × mm) Séries A A0 841 × 1189 A1 594 × 841 A2 420 × 594 A3 297 × 420 A4 210 × 297 A5 148 × 210 A6 …   Wikipédia en Français

  • ISO 3166-1 — est une des parties de la norme ISO 3166. Publiée pour la première fois en 1974 par l’ISO, elle attribue 3 codes pour les pays du monde : ISO 3166 1 alpha 2 : codes à deux lettres pour de nombreuses applications, notamment les domaines… …   Wikipédia en Français

  • ISO 3166-1 — ISO 3166 1  часть стандарта ISO 3166, содержащая коды названий стран и подчинённых территорий. Впервые опубликована в 1974 году. Определяет три разных кода для каждой страны: ISO 3166 1 alpha 2 (англ.)русск., двухбуквенная система …   Википедия

  • ISO 8601 — Data elements and interchange formats – Information interchange – Representation of dates and times is an international standard covering the exchange of date and time related data. It was issued by the International Organization for… …   Wikipedia

  • ISO/CEI 8859 — ISO 8859 ISO 8859, également appelée plus formellement ISO/CEI 8859, est une norme commune de l ISO et de la CEI de codage de caractères sur 8 bits pour le traitement informatique du texte. Le standard est divisé en parties numérotées publiées… …   Wikipédia en Français

  • ISO/IEC 8859 — ISO 8859 ISO 8859, également appelée plus formellement ISO/CEI 8859, est une norme commune de l ISO et de la CEI de codage de caractères sur 8 bits pour le traitement informatique du texte. Le standard est divisé en parties numérotées publiées… …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”