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{{Infobox
|name = MODS
|title = Metadata Object Description Schema (MODS)
|
|caption = MODS
}}
The '''Metadata Object Description Schema''' (MODS) is an [[Extensible Markup Language|XML]]-based bibliographic description schema developed by the [[United States]] [[Library of Congress]]' Network Development and Standards Office. MODS was designed as a compromise between the complexity of the [[MARC standards|MARC]] format used by libraries and the extreme simplicity of [[Dublin Core]] metadata.
== About MODS ==
===History and development===
MODS was first announced for trial use in June, 2002. As of June 2010 it is at version 3.4<ref>{{cite web|url=http://presentations.ala.org/images/1/1f/Riley.pdf |title= MODS and MADS: Current implementations and future directions |accessdate=2011-08-01}}</ref>.
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=== Relationship to MARC ===
The MODS record has been designed to carry key data elements from the [[MARC]] record but does not define all of the MARC fields and does not use the field and subfield tagging from the MARC standard. There are data elements in MODS that are not compatible with the MARC record so there is some loss translating from MARC to MODS and from MODS to MARC. There is no commitment on the part of the [[Library of Congress]] to maintain compatibility between the two metadata formats beyond what is convenient to the community of MODS users.
=== Advantages ===
The use of MODS provides several advantages compared to other metadata schemas<ref>{{cite web|url=http://presentations.ala.org/images/e/e3/Mccallum_guenther.pdf |title= Using MODS for discovery of LC’s rich collections |accessdate=2011-08-02}}</ref>:
* High compatibility with existing resource descriptions
* Less detail than MARC so various internal record element sets can be mapped to MODS
* Item descriptions from outside in DC and other simpler formats can be mapped and enhanced
=== Maintenance board ===
Revisions to the schema are suggested and discussed on the [http://listserv.loc.gov/listarch/mods.html MODS listserv], and approved by the MODS Editorial Committee. The MODS/MADS Editorial Committee is an international group of volunteers responsible for maintaining editorial control over MODS and MADS and their accompanying documentation as well as for the MODS and MADS XML schemas<ref>{{cite web|url=http://www.loc.gov/standards/mods/editorial-committee.html |title= MODS/MADS Editorial Committee |accessdate=2011-08-02}}</ref>. The [[Library of Congress]] carries out the application of approved changes to the schema and maintains the official web site for the standard. There is no formal standards body involved in the MODS schema at this time.
==See also==
* [[Comparison of reference management software]] for software supporting the MODS format.
* [[Metadata Authority Description Schema]] was created to serve as a companion to the Metadata Object Description Schema (MODS).[http://www.loc.gov/standards/mads/]
* [[Metadata standards]]
== References ==
<references />
==External links==
*
* [http://www.loc.gov/listarch/mods.html MODS listserv Site]
[[Category:Bibliography file formats]]
[[Category:Library cataloging and classification]]
[[Category:Metadata]]
[[de:Metadata Object Description Schema]]
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