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Metadata

The term metadata means “data about data.” Authors, librarians, and information scientists use metadata to classify content for organization and retrieval.

The Getty Research Institute publishes a valuable general introduction to metadata, Introduction to Metadata available at http://www.getty.edu/research/institute/standards/intrometadata/index.html.

DSpace currently uses a qualified version of the Dublin Core schema based on the Dublin Core Libraries Working Group Application Profile (LAP). DSpace uses the LAP as a starting point for its application of Dublin Core, borrowing most of the qualifiers from it and adapting others to fit. Some qualifiers were also added to suit DSpace needs.

DSpace and OAI

DSpace supports the Open Archives Initiative’s Protocol for Metadata Harvesting (OAI-PMH) v2.0 as a data provider. OAI support was implemented using OCLC’s OAICat open-source software to make DSpace item records available for harvesting. DSpace at MIT is registered as a data provider with the Open Archives Initiative. Other institutions running DSpace may choose to turn on OAI or not, and to register as a data provider or not.

Dublin Core with Qualifiers

Element Qualifier Scope Note
contributor   A person, organization, or service responsible for the content of the resource. Catch-all for unspecified contributors
contributor advisor Use primarily for thesis advisor
contributor author  
contributor editor  
contributor illustrator  
contributor other  
coverage spatial Spatial characteristics of content
coverage temporal Temporal characteristics of content
creator   Do not use; for harvested metadata only
date   Use qualified form if possible
date accessioned Date DSpace takes possession of item
date available Date or date range item became available to the public
date copyright Date of copyright
date created Date of creation or manufacture of intellectual content if different from date.issued
date issued Date of publication or distribution.
date submitted Recommend for theses and dissertations
identifier   Catch-all for unambiguous identifiers not defined by qualified form; use identifier.other for a known identifier common to a local collection instead of unqualified form
identifier citation Bibliographic citation for works that have been published as a part of a larger work, e.g. journal articles, book chapters
identifier govdoc Government document number
identifier isbn International Standard Book Number
identifier issn International Standard Serial Number
identifier sici Serial Item and Contribution Identifier
identifier ismn International Standard Music Number
identifier other A known identifier type common to a local collection
identifier uri Uniform Resource Identifier
description   Catch-all for any description not defined by qualifiers
description abstract Abstract or summary
description provenance The history of custody of the item since its creation, including any changes successive custodians made to it
description sponsorship Information about sponsoring agencies, individuals, or contractual arrangements for the item
description statementofresponsibility To preserve statement of responsibility from MARC records
description tableofcontents A table of contents for this item
description uri Uniform Resource Identifier pointing to description of this item
format   Catch-all for any format information not defined by qualifiers
format extent Size or duration
format medium Physical medium
format mimetype Registered MIME type identifiers
language   Catch-all for non-ISO forms of the language of the item, accommodating harvested values
language iso Current ISO standard for language of intellectual content, including country codes (e.g., "en_US")
publisher   Entity responsible for publication, distribution, or imprint
relation   Catch-all for references to other related items
relation isformatof References additional physical form
relation ispartof References physically or logically containing item
relation ispartofseries Series name and number within that series, if available
relation haspart References physically or logically contained item
relation isversionof References earlier version
relation hasversion References later version
relation isbasedon References source.
relation isreferencedby Pointed to by referenced resource
relation requires Reference resource is required to support function, delivery, or coherence of item
relation replaces References preceeding item
relation isreplacedby References succeeding item
relation uri References Uniform Resource Identifier for related item
rights   Terms governing use and reproduction
rights uri References terms governing use and reproduction
source   Do not use; for harvested metadata only
source uri Do not use; for harvested metadata only
subject   Uncontrolled index term
subject classification Catch-all for value from local classification system; global classification systems will receive specific qualifier.
subject ddc Dewey Decimal Classification Number
subject lcc Library of Congress Classification Number
subject lcsh Library of Congress Subject Heading
subject mesh Medical Subject Headings
subject other Local controlled vocabulary
title   Title statement/title proper
title alternative Varying (or substitute) form of title proper appearing in item, e.g., abbreviation or translation
type   Nature or genre of content

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