Cataloging | |
The NLM metadata schema is based on the metadata terms maintained by the Dublin Core Metadata Initiative, including elements, element refinements, encoding schemes, and vocabulary terms (cf. http://dublincore.org/documents/dcmi-terms/). It also incorporates some of the best practice recommendations of the DC-Library Application Profile (DC-Lib) (cf. http://dublincore.org/documents/2002/04/16/library-application-profile/). It is designed for use with electronic resources published by the Library and incorporates additional elements and qualifiers identified as requirements by NLM, most notably the addition of Permanence ratings for each resource. ¹
In the list which follows, the elements in the NLM Metadata schema are outlined using the following conventions:
The key used for "Identifier" is:
DC = Approved Dublin Core elements and qualifiers
NLMDC = Approved Dublin Core elements with NLM-defined qualifiers
NLM = NLM-defined elements
The key for the element requirements is:
R = Required
RA = Required if applicable
O = Optional
Name: Title Identifier: DC.Title Definition: A name given to the resource Required: R Repeatable: N Comments: N/A
Name: Alternative Title Identifier: DC.Title.Alternative Definition: Substitute or alternative names given to the resource, including subtitles, acronyms, translations, etc. Required: O Repeatable: Y Comments: N/A
Name: Subject, Keyword Identifier: DC.Subject.Keyword Definition: Topic of the content of the resource Required: O Repeatable: Y Comments: N/A
Name: Subject, MeSH Identifier: DC.Subject.MeSH Definition: Topic of the content of the resource, expressed in NLM Medical Subject Headings Required: O Repeatable: Y Comments: N/A
Name: Subject, Class Number Identifier: NLMDC.Subject.NLMClass Definition: An NLM classification number which represents the topic of the content of the resource Required: O Repeatable: N Comments: N/A
Name: Subject, Name Identifier: NLMDC.Subject.Name Definition: Personal or corporate names which represent the topic of the content of the resource Required: O Repeatable: Y Comments: N/A
Name: Subject, Title Identifier: NLMDC.Subject.Title Definition: Title of a work which represents the topic of the content of the resource Required: O Repeatable: Y Comments: N/A
Name: Publisher Identifier: DC.Publisher Definition: An entity responsible for making the resource available Required: R Repeatable: Y Comments: N/A
Name: Date Issued Identifier: DC.Date.Issued Definition: The date the digitized resource was made available Required: R Repeatable: N Comments: NLM is not permitting an unqualified date. NLM is using the W3C-DTF approved schema for form of date.
Name: Date Created Identifier: DC.Date.Created Definition: Date of creation of the intellectual content of the resource (if it differs from date issued) Required: O Repeatable: N Comments: N/A
Name: Date original form created Identifier: NLMDC.Date.Created.Original Definition: Date of creation of original format, if not originally a digital object Required: O Repeatable: N Comments: N/A
Name: Date of last update Identifier: DC.Date.Modified Definition: Latest date of updating for minor changes or corrections Required: RA Repeatable: N Comments: N/A
Name: Major revision date Identifier: NLMDC.Date.Modified.Major Definition: Latest date of updating for major changes or new review of the site Required: O Repeatable: N Comments: N/A
Name: Expiration date Identifier: NLMDC.Date.Expiration Definition: Date the resource is to be reviewed or pulled Required: RA Repeatable: N Comments: N/A
Name: Identifier, URI Identifier: DC.Identifier.URI Definition: A number or text string assigned by NLM which uniquely identifies the resource Required: O Repeatable: N Comments: NLM is not permitting an unqualified Identifier
Name: Identifier, URL Identifier: DC.Identifier.URL Definition: The URL of a resource Required: R Repeatable: Y Comments: N/A
Name: Identifier, NLM Bib UI Identifier: NLMDC.Identifier.BibUI Definition: NLM ILS catalog record ID number Required: O Repeatable: N Comments: N/A
Name: Identifier, ISSN Identifier: NLMDC.Identifier.ISSN Definition: International Serial Standard Number Required: O Repeatable: Y Comments: N/A
Name: Identifier, ISBN Identifier: NLMDC.Identifier.ISBN Definition: International Standard Book Number Required: O Repeatable: Y Comments: N/A
Name: Permanence Level Identifier: NLM.Permanence.Level Definition: The extent to which a user can be assured that the resource will remain stable and available Required: R Repeatable: N Comments: N/A
Name: Permanence Guarantor Identifier: NLM.Permanence.Guarantor Definition: The agency responsible for guaranteeing the availability and stability of the resource Required: R Repeatable: N Comments: N/A
Name: Language Identifier: DC.Language Definition: Language of the resource Required: R Repeatable: Y Comments: NLM is using the ISO 639.2 three letter codes.
Name: Type Identifier: DC.Type Definition: Genre or class of material to which the resource belongs Required: R Repeatable: Y Comments: Standard list based on resource types to be developed
Name: Rights Identifier: DC.Rights Definition: Rights held in and over a resource, such as intellectual property rights or copyright Required: R Repeatable: Y Comments: N/A
Name: Contributor Identifier: DC.Contributor Definition: The name of the entity which contributed to creation of the resource Required: O Repeatable: Y Comments: N/A
Name: Contributor, Role Identifier: NLMDC.Contributor.Role Definition: Designation of a function that describes the relationship between a Contributor and the resource Required: O Repeatable: Y Comments: The term "Role" is not actually used; rather a value from a specified list is selected.
Name: Mandate Identifier: NLM.Mandate Definition: If a specific legal instrument requires the resource to be created or provided, supply the name of the specific act or regulation Required: O Repeatable: Y Comments: N/A
Name: Notes Identifier: DC.Description.Notes Definition: Any general information about the resource Required: O Repeatable: Y Comments: N/A
Name: Table of Contents Identifier: DC.Description.TableOfContents Definition: The contents of the resource Required: O Repeatable: N Comments: N/A
Name: Edition Identifier: DC.Description.Edition Definition: Version or edition of the resource Required: O Repeatable: N Comments: N/A
Name: Abstract Identifier: DC.Description.Abstract Definition: A summary of the resource Required: O Repeatable: N Comments: N/A
Name: Audience Identifier: DC.Description.Audience Definition: The population or level the resource is intended for Required: O Repeatable: Y Comments: N/A
Name: Geographic Coverage Identifier: DC.Coverage.Spatial Definition: A geographic or spatial location covered by the intellectual content of the resource Required: O Repeatable: Y Comments: N/A
Name: Temporal Coverage Identifier: DC.Coverage.Temporal Definition: The time period or date range covered by the intellectual content of the resource Required: O Repeatable: Y Comments: N/A
Name: Relation Identifier: DC.Relation Definition: A reference to an unspecified type of related resource Required: O Repeatable: Y Comments: N/A
Name: Relation, Version of Identifier: DC.Relation.IsVersionOf Definition: Described resource is a version, edition, or adaptation of the referenced resource. Implies substantive changes to content, rather than difference in format Required: O Repeatable: Y Comments: N/A
Name: Relation, Is Format of Identifier: DC.Relation.IsFormatOf Definition: Described resource is the same intellectual content of the referenced resource, but presented in another format Required: O Repeatable: Y Comments: N/A
Name: Relation, Is Replaced By Identifier: DC.Relation.IsReplacedBy Definition: Described resource is supplanted or superceded by the referenced resource Required: O Repeatable: Y Comments: N/A
Name: Relation, Replaces Identifier: DC.Relation.Replaces Definition: Described resource supplants, displaces or supercedes the referenced resource Required: O Repeatable: Y Comments: N/A
Name: Relation, Is Required By Identifier: DC.Relation.IsRequiredBy Definition: Described resource is required by the referenced resource, either physicially or logically Required: O Repeatable: Y Comments: N/A
Name: Relation, Requires Identifier: DC.Relation.Requires Definition: Described resource requires the referenced resource to support its function, delivery, or coherence of content Required: O Repeatable: Y Comments: N/A
Name: Relation, Is Part Of Identifier: DC.Relation.IsPartOf Definition: The described resource is a physical or logical part of the referenced resource Required: O Repeatable: Y Comments: N/A
Name: Relation, Has Part Identifier: DC.Relation.HasPart Definition: The described resource includes the referenced resource either physically or logically Required: O Repeatable: Y Comments: N/A
Name: Relation, Is Referenced By Identifier: DC.Relation.IsReferencedBy Definition: The described resource is referenced, cited, or otherwise pointed to by the referenced resource Required: O Repeatable: Y Comments: N/A
Name: Relation, References Identifier: DC.Relation.References Definition: The described resource references, cites, or otherwise points to the referenced resource Required: O Repeatable: Y Comments: N/A
Name: Format Identifier: DC.Format Definition: Information about the current physical or digital manifestation of the resource, such as software or hardware needed, or duration or size of the resource Required: O Repeatable: Y Comments: N/A
Name: Contact Information, E-mail Identifier: DC.Contact.Email Definition: An e-mail address for inquiries or further information about the resource Required: R Repeatable: Y Comments: N/A
Name: Contact Information, Section Affiliation Identifier: NLM.Contact.Affiliation Definition: The Section of the Library to which the resource belongs or which is responsible for its maintenance Required: O Repeatable: Y Comments: N/A
Name: Contact Information, Personal Name Identifier: NLM.Contact.PersonalName Definition: The name of a person to contact for inquiries or further information about the resource Required: O Repeatable: Y Comments: N/A
Name: Change History Identifier: NLM.ChangeHistory Definition: Free text description of changes made to the resource during the most recent update Required: O Repeatable: Y Comments: N/A¹For further information about the NLM permanence ratings, see Developing Permanence Levels and the Archives for NLM's Permanent Web Documents.
Last reviewed: 02 July 2008
Last updated: 02 July 2008
First published: 01 February 2002
Metadata| Permanence level: Permanent: Stable Content
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