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Discovery Service Dublin Core Application Profile (PNDS DCAP)



Title:

People's Network Service: Discovery Service Dublin Core Application Profile (PNDS DCAP)

Creator:
Andy Powell
Contributor:
Pete Johnston
Date Issued:
2005-04-27
Identifier:
Replaces:
Not applicable
Is Replaced By:
Not applicable
Latest Version:
Status of Document:
This is a Working Draft.
Description of Document: This document presents a draft DC Application Profile for item-level description for the People's Network Service.

Introduction

This draft document provides some recommendations for the use of simple Dublin Core metadata to describe resources being made available via the MLA People's Network Service (PNS). Content providers to the PNS will expose metadata about their content using this application profile and the OAI-PMH.

These recommendations are not primarily targeted at the end-users of the PNS. Rather, they are intended to guide 'best-practice' for the providers of content to the PNS in order that such systems can be configured to maximise the benefits of a shared approach to metadata disclosure. The intention is to facilitate more consistent results when 'cross-searching' and browsing metadata records gathered from multiple content providers. Nonetheless, we would hope that these guidelines have some impact on the cataloguing guidelines used within content provider services and on the 'help' sub-systems offered to end-users of those services.

These recommendations are intended to be applicable to a wide range of resource types.

These recommendations draw on four documents:

Functional Requirements

These guidelines are intended to create metadata that supports the following end-user discovery-related requirements. i.e. services should be able to perform the following functions/operations based on this Dublin Core Application Profile.

Search

Services will be able to offer the following types of searches for items

Filter

Services will be able to filter/select the results of any of the searches listed above according to:

Browse/Group

Services will be able to present items grouped for browsing according to:

Display

Services will be able to display the following information about an item. (Some properties may not apply to all types of item.)

General Recommendations

All content providers are strongly recommended to support the following set of properties for describing items:

The value strings provided for these properties must not contain any HTML (or XML) markup.

Bindings

All content providers must support the qualified DC 'pns_dc' record format (XML schema to be provided).

All content providers must also support the simple DC 'oai_dc' record format (this is mandated by the OAI-PMH).

Admin metadata: in order to maintain and share consistent metadata about PNS metadata records, content providers should conform to the PNS admin metadata guidelines?.

Recommended Properties

This section lists the properties that are recommended by the application profile. For each property, PNS-specific guidelines are provided, followed by the authoritative definitions and comments from the Dublin Core Metadata Initiative.

Title

A name given to the resource.

Transcribe the title preserving the original wording, order and spelling. Capitalize proper nouns only, in accordance with AACR2. Punctuation need not reflect the usage of the original. Subtitles should be separated from the title by colon, e.g.:

Property: dc:title Value String: Hungary's revolution : forty years on


pns_dc XML Encoding:


<dc:title>Hungary's revolution : forty years on</dc:title>

oai_dc XML Encoding:

<dc:title>Hungary's revolution : forty years on</dc:title>

DC Label: Title

DC Name: dc:title

DC Definition: A name given to the resource.

DC Comment: Typically, a Title will be a name by which the resource is formally known.

Subject

The topic of the resource.

For free-text keywords, repeat the property. There are no requirements regarding the capitalization of keywords. For example

Property: dc:subject Value String: Football

Property: dc:subject Value String: Rugby


pns_dc XML Encoding:

<dc:subject>Football</dc:subject>
<dc:subject>Rugby</dc:subject>

oai_dc XML Encoding:

<dc:subject>Football</dc:subject>
<dc:subject>Rugby</dc:subject>

Where terms are taken from a standard subject classification scheme use a vocabulary encoding scheme to indicate the vocabulary being used. Transcribe complete subject descriptor according to the relevant scheme. Use the punctuation and capitalisation used in the original scheme, for example:

Property: dc:subject Vocabulary Encoding Scheme: dcterms:LCSH Value String: World War, 1939-1945 - Germany

Property: dc:subject Vocabulary Encoding Scheme: dcterms:LCSH Value String: Germany - History - 1933-1945

Property: dc:subject Vocabulary Encoding Scheme: dcterms:LCSH Value String: Hitler, Adolf, 1889-45

Property: dc:subject Vocabulary Encoding Scheme: dcterms:DDC Value String: 940.43


pns_dc XML Encoding:

<dc:subject xsi:type="dcterms:LCSH">World War, 1939-1945 - Germany</dc:subject>
<dc:subject xsi:type="dcterms:LCSH">Germany - History - 1933-1945</dc:subject>
<dc:subject xsi:type="dcterms:LCSH">Hitler, Adolf, 1889-45</dc:subject>

<dc:subject xsi:type="dcterms:DDC">940.43</dc:subject>

oai_dc XML Encoding:

<dc:subject>World War, 1939-1945 - Germany</dc:subject>
<dc:subject>Germany - History - 1933-1945</dc:subject>

<dc:subject>Hitler, Adolf, 1889-45</dc:subject>
<dc:subject>940.43</dc:subject>

Where the resource is about a person or organisation, their names should be supplied in addition to other keywords.

Enter personal names, where possible, in the order suggested by AACR2 chapter 22 for headings of persons, i.e. the entry element should be that part of the name under which the person would normally be listed in authoritative alphabetic lists in his or her language or country of residence or activity (rule 22.4A). Separate other elements with a comma, e.g.:

Property: dc:subject Vocabulary Encoding Scheme: pnsterms:Agent Value String: Thatcher, Margaret

Property: dc:subject Vocabulary Encoding Scheme: pnsterms:Agent Value String: Spears, Britney


pns_dc XML Encoding:

<dc:subject xsi:type="pnsterms:Agent">Thatcher, Margaret</dc:subject>
<dc:subject xsi:type="pnsterms:Agent">Spears, Britney</dc:subject>

oai_dc XML Encoding:

<dc:subject>Thatcher, Margaret</dc:subject>
<dc:subject>Spears, Britney</dc:subject>

Enter corporate names, where possible, in the order suggested by AACR2 chapters 24 for headingds for corporate bodies. In general (rule 24.1) this means entering a corporate body under the name by which it is commonly identified, except when the rules provide for entering it under the name of a higher or related body or the name of a government, e.g.:

Property: dc:subject Vocabulary Encoding Scheme: pnsterms:Agent Value String: Manchester United Football Club

Property: dc:subject Vocabulary Encoding Scheme: pnsterms:Agent Value String: British Broadcasting Corporation


pns_dc XML Encoding:

<dc:subject xsi:type="pnsterms:Agent">Manchester United Football Club</dc:subject>

<dc:subject xsi:type="pnsterms:Agent">British Broadcasting Corporation</dc:subject>

oai_dc XML Encoding:

<dc:subject>Manchester United Football Club</dc:subject>
<dc:subject>British Broadcasting Corporation</dc:subject>


The inclusion of personal and corporate name headings from authority lists constructed according to AACR2, e.g. the Library of Congress Name Authority File (LCNA), is also acceptable.


DC Label: Subject and Keywords

DC Name: dc:subject

DC Definition: The topic of the content of the resource.

DC Comment: Typically, a Subject will be expressed as keywords, key phrases or classification codes that describe a topic of the resource. Recommended best practice is to select a value from a controlled vocabulary or formal classification scheme.

Description

A free-text description of resource.


DC Label: Description

DC Name: dc:description

DC Definition: An account of the content of the resource.

DC Comment: Description may include but is not limited to: an abstract, table of contents, reference to a graphical representation of content or a free-text account of the content

Creator

The person or organisation primarily responsible for making the content of the resource.

Enter personal names, where possible, in the order suggested by AACR2 chapter 22 for headings of persons, i.e. the entry element should be that part of the name under which the person would normally be listed in authoritative alphabetic lists in his or her language or country of residence or activity (rule 22.4A). Separate other elements with a comma, e.g.:

Property: dc:creator Value String: Collinson, Patrick

Property: dc:creator Value String: Gould, Stephen Jay

Property: dc:creator Value String: Hoskins, W.G.

Property: dc:creator Value String: Ng, Tze Beng


pns_dc XML Encoding:

<dc:creator>Collinson, Patrick</dc:creator>
<dc:creator>Gould, Stephen Jay</dc:creator>
<dc:creator>Hoskins, W.G.</dc:creator>
<dc:creator>Ng, Tze Beng</dc:creator>

oai_dc XML Encoding:

<dc:creator>Collinson, Patrick</dc:creator>
<dc:creator>Gould, Stephen Jay</dc:creator>
<dc:creator>Hoskins, W.G.</dc:creator>

<dc:creator>Ng, Tze Beng</dc:creator>

Enter corporate names, where possible, in the order suggested by AACR2 chapters 24 for headingds for corporate bodies. In general (rule 24.1) this means entering a corporate body under the name by which it is commonly identified, except when the rules provide for entering it under the name of a higher or related body or the name of a government, e.g.:

Property: dc:creator Value String: Bodleian Library

Property: dc:creator Value String: British Broadcasting Corporation

Property: dc:creator Value String: Loughborough University. Department of Computer Science

Property: dc:creator Value String: United Kingdom. Department for Education and Employment


pns_dc XML Encoding:

<dc:creator>Bodleian Library</dc:creator>
<dc:creator>British Broadcasting Corporation</dc:creator>
<dc:creator>Loughborough University. Department of Computer Science</dc:creator>
<dc:creator>United Kingdom. Department for Education and Employment</dc:creator>

oai_dc XML Encoding:

<dc:creator>Bodleian Library</dc:creator>
<dc:creator>British Broadcasting Corporation</dc:creator>
<dc:creator>Loughborough University. Department of Computer Science</dc:creator>

<dc:creator>United Kingdom. Department for Education and Employment</dc:creator>

The inclusion of personal and corporate name headings from authority lists constructed according to AACR2, e.g. the Library of Congress Name Authority File (LCNA), is also acceptable.


DC Label:

Creator

DC Name:

dc:creator

DC Definition:

An entity primarily responsible for making the content of the resource.

DC Comment:

Examples of a Creator include a person, an organisation, or a service. Typically, the name of a Creator should be used to indicate the entity.

Contributor

A person or organisation responsible for making contributions to the content of the resource.

Enter personal names, where possible, in the order suggested by AACR2 chapter 22 for headings of persons, i.e. the entry element should be that part of the name under which the person would normally be listed in authoritative alphabetic lists in his or her language or country of residence or activity (rule 22.4A). Separate other elements with a comma, e.g.:

Property: dc:contributor Value String: Collinson, Patrick

Property: dc:contributor Value String: Gould, Stephen Jay

Property: dc:contributor Value String: Hoskins, W.G.

Property: dc:contributor Value String: Ng, Tze Beng


pns_dc XML Encoding:

<dc:contributor>Collinson, Patrick</dc:contributor>
<dc:contributor>Gould, Stephen Jay</dc:contributor>
<dc:contributor>Hoskins, W.G.</dc:contributor>
<dc:contributor>Ng, Tze Beng</dc:contributor>

oai_dc XML Encoding:

<dc:contributor>Collinson, Patrick</dc:contributor>
<dc:contributor>Gould, Stephen Jay</dc:contributor>
<dc:contributor>Hoskins, W.G.</dc:contributor>

<dc:contributor>Ng, Tze Beng</dc:contributor>

Enter corporate names, where possible, in the order suggested by AACR2 chapters 24 for headingds for corporate bodies. In general (rule 24.1) this means entering a corporate body under the name by which it is commonly identified, except when the rules provide for entering it under the name of a higher or related body or the name of a government, e.g.:

Property: dc:contributor Value String: Bodleian Library

Property: dc:contributor Value String: British Broadcasting Corporation

Property: dc:contributor Value String: Loughborough University. Department of Computer Science

Property: dc:contributor Value String: United Kingdom. Department for Education and Employment


pns_dc XML Encoding:

<dc:contributor>Bodleian Library</dc:contributor>
<dc:contributor>British Broadcasting Corporation</dc:contributor>
<dc:contributor>Loughborough University. Department of Computer Science</dc:contributor>
<dc:contributor>United Kingdom. Department for Education and Employment</dc:contributor>

oai_dc XML Encoding:

<dc:contributor>Bodleian Library</dc:contributor>
<dc:contributor>British Broadcasting Corporation</dc:contributor>
<dc:contributor>Loughborough University. Department of Computer Science</dc:contributor>

<dc:contributor>United Kingdom. Department for Education and Employment</dc:contributor>

The inclusion of personal and corporate name headings from authority lists constructed according to AACR2, e.g. the Library of Congress Name Authority File (LCNA), is also acceptable.


DC Label:

Contributor

DC Name:

dc:contributor

DC Definition:

An entity responsible for making contributions to the content of the resource.

DC Comment:

Examples of a Contributor include a person, an organisation, or a service. Typically, the name of a Contributor should be used to indicate the entity

Publisher

A person or organisation responsible for making the resource available.

Enter personal names, where possible, in the order suggested by AACR2 chapter 22 for headings of persons, i.e. the entry element should be that part of the name under which the person would normally be listed in authoritative alphabetic lists in his or her language or country of residence or activity (rule 22.4A). Separate other elements with a comma, e.g.:

Property: dc:publisher Value String: Collinson, Patrick

Property: dc:publisher Value String: Gould, Stephen Jay

Property: dc:publisher Value String: Hoskins, W.G.

Property: dc:publisher Value String: Ng, Tze Beng


pns_dc XML Encoding:

<dc:publisher>Collinson, Patrick</dc:publisher>
<dc:publisher>Gould, Stephen Jay</dc:publisher>
<dc:publisher>Hoskins, W.G.</dc:publisher>
<dc:publisher>Ng, Tze Beng</dc:publisher>

oai_dc XML Encoding:

<dc:publisher>Collinson, Patrick</dc:publisher>
<dc:publisher>Gould, Stephen Jay</dc:publisher>
<dc:publisher>Hoskins, W.G.</dc:publisher>

<dc:publisher>Ng, Tze Beng</dc:publisher>

Enter corporate names, where possible, in the order suggested by AACR2 chapters 24 for headingds for corporate bodies. In general (rule 24.1) this means entering a corporate body under the name by which it is commonly identified, except when the rules provide for entering it under the name of a higher or related body or the name of a government, e.g.:

Property: dc:publisher Value String: Bodleian Library

Property: dc:publisher Value String: British Broadcasting Corporation

Property: dc:publisher Value String: Loughborough University. Department of Computer Science

Property: dc:publisher Value String: United Kingdom. Department for Education and Employment


pns_dc XML Encoding:

<dc:publisher>Bodleian Library</dc:publisher>
<dc:publisher>British Broadcasting Corporation</dc:publisher>
<dc:publisher>Loughborough University. Department of Computer Science</dc:publisher>
<dc:publisher>United Kingdom. Department for Education and Employment</dc:publisher>

oai_dc XML Encoding:

<dc:publisher>Bodleian Library</dc:publisher>
<dc:publisher>British Broadcasting Corporation</dc:publisher>
<dc:publisher>Loughborough University. Department of Computer Science</dc:publisher>

<dc:publisher>United Kingdom. Department for Education and Employment</dc:publisher>

The inclusion of personal and corporate name headings from authority lists constructed according to AACR2, e.g. the Library of Congress Name Authority File (LCNA), is also acceptable.


DC Label:

Publisher

DC Name:

dc:publisher

DC Definition:

An entity responsible for making the resource available.

DC Comment:

Examples of a Publisher include a person, an organisation, or a service. Typically, the name of a Publisher should be used to indicate the entity.

Type

The resource type, using a value selected from the DCMIType vocabulary. Repeat the property for multiple types. For example:

Property: dc:type Vocabulary Encoding Scheme: dcterms:DCMIType Value String: Image


pns_dc XML Encoding:

<dc:type xsi:type="dcterms:DCMIType">Image</dc:type>

oai_dc XML Encoding:

<dc:type>Image</dc:type>


DC Label: Resource Type

DC Name: dc:type

DC Definition: The nature or genre of the content of the resource.

DC Comment: Type includes terms describing general categories, functions, genres, or aggregation levels for content. Recommended best practice is to select a value from a controlled vocabulary (for example, the working draft list of DCMI Type Vocabulary. To describe the physical or digital manifestation of the resource, use the FORMAT element.

Format

Recommended best practice is to select a term from the IANA registered list of Internet Media Types (or MIME types). For example:

Property: dc:format Vocabulary Encoding Scheme: dcterms:IMT Value String: text/html


pns_dc XML Encoding:

<dc:format xsi:type="dcterms:IMT">text/html</dc:format>

oai_dc XML Encoding:

<dc:format>text/html</dc:format>


DC Label:

Format

DC Name:

dc:format

DC Definition:

The physical or digital manifestation of the resource.

DC Comment:

Typically, Format may include the media-type or dimensions of the resource. Format may be used to determine the software, hardware or other equipment needed to display or operate the resource. Examples of dimensions include size and duration Recommended best practice is to select a value from a controlled vocabulary (for example, the list of Internet Media Types (MIME) defining computer media formats (IANA).

Identifier

The URI of the resource. For example:

Property: dc:identifier Syntax Encoding Scheme: dcterms:URI Value String: http://www.lib.cam.ac.uk/Taylor-Schechter/


pns_dc XML Encoding:

<dc:identifier xsi:type="dcterms:URI">http://www.lib.cam.ac.uk/Taylor-Schechter/</dc:identifier>

oai_dc XML Encoding:

<dc:identifier>http://www.lib.cam.ac.uk/Taylor-Schechter/</dc:identifier>


DC Label: Resource Identifier

DC Name: dc:identifier

DC Definition: An unambiguous reference to the resource within a given context.

DC Comment: Recommended best practice is to identify the resource by means of a string or number conforming to a formal identification system. Example formal identification systems include the Uniform Resource Identifier (URI) (including the Uniform Resource Locator (URL), the Digital Object Identifier (DOI) and the International Standard Book Number (ISBN)).

Language

The language of the resource. Use the language codes defined in RFC 3066. For example:

Property: dc:language Vocabulary Encoding Scheme: dcterms:RFC3066 Value String: en-GB


pns_dc XML Encoding:

<dc:language xsi:type="dcterms:RFC3066">en-GB</dc:language>

oai_dc XML Encoding:

<dc:language>en-GB</dc:language>


DC Label: Language

DC Name: dc:language

DC Definition: A language of the intellectual content of the resource.

DC Comment: Recommended best practice is to use RFC 3066 which, in conjunction with ISO639 [18]), defines two- and three primary language tags with optional subtags. Examples include "en" or "eng" for English, "akk" for Akkadian", and "en-GB" for English used in the United Kingdom.

Is Part Of (Relation)

Where the resource is part of a collection, provide the URI of the collection's home page:

Property: dcterms:isPartOf Value URI: http://www.intothenet.org/


pns_dc XML Encoding:

<dcterms:isPartOf xsi:type="dcterms:URI">http://www.intothenet.org/</dcterms:isPartOf>

Use dc:relation (without the xsi:type attribute) in place of dcterms:isPartOf when exposing simple oai_dc records.

oai_dc XML Encoding:

<dc:relation>http://www.intothenet.org/</dc:relation>


DC Label: Is Part Of

DC Name: dcterms:isPartOf

DC Definition: The described resource is a physical or logical part of the referenced resource.

DC Comment:

Spatial Coverage

The spatial coverage of the content of the resource. This may be a term taken from an existing controlled vocabulary (e.g. the Getty Thesaurus of Geographic Names). Where more than one term is used, a separate statement should be used for each one. For example:

Property: dcterms:spatial Vocabulary Encoding Scheme: dcterms:TGN Value String: World, Europe, United Kingdom, England, Bath and Northeast Somerset, Bath

Property: dcterms:spatial Vocabulary Encoding Scheme: dcterms:TGN Value String: World, Europe, United Kingdom, England, Bristol


pns_dc XML Encoding:

<dcterms:spatial xsi:type="dcterms:TGN">World, Europe, United Kingdom, England, Bath and Northeast Somerset, Bath</dcterms:spatial>

<dcterms:spatial xsi:type="dcterms:TGN">World, Europe, United Kingdom, England, Bristol</dcterms:spatial>

Use dc:coverage in place of dcterms:spatial (without the xsi:type qualifier) when exposing simple oai_dc records.

oai_dc XML Encoding:

<dc:coverage>World, Europe, United Kingdom, England, Bath and Northeast Somerset, Bath</dc:coverage>
<dc:coverage>World, Europe, United Kingdom, England, Bristol</dc:coverage>


DC Label: Spatial

DC Name: dcterms:spatial

DC Definition: Spatial characteristics of the intellectual content of the resource.

DC Comment:

Temporal Coverage

The temporal coverage of the content of the resource. This may be a term taken from an existing controlled vocabulary or using a format for representing a date or period of time. Where more than one term is used, a separate statement should be used for each one. For example:

Property: dcterms:temporal Syntax Encoding Scheme: dcterms:Period Value String: name=The Great Depression; start=1929; end=1939;


pns_dc XML Encoding:

<dcterms:temporal xsi:type="dcterms:Period>name=The Great Depression; start=1929; end=1939;</dcterms:temporal>

Use dc:coverage in place of dcterms:temporal (without the xsi:type qualifier) when exposing simple oai_dc records.

oai_dc XML Encoding:

<dc:coverage>name=The Great Depression; start=1929; end=1939;</dc:coverage>


DC Label: Temporal

DC Name: dcterms:temporal

DC Definition: Temporal characteristics of the intellectual content of the resource.

DC Comment:

License

The URI of the licence under which the resource is being made available. For example:

Property: dcterms:license Value URI: http://creativecommons.org/licenses/by-sa/2.0/


pns_dc XML Encoding:

<dcterms:license xsi:type="dcterms:URI">http://creativecommons.org/licenses/by-sa/2.0/</dcterms:license>

Use dc:rights (without the xsi:type qualifier) in place of dcterms:license when exposing simple oai_dc records.

oai_dc XML Encoding:

<dc:rights>http://creativecommons.org/licenses/by-sa/2.0/</dc:rights>


DC Label: License

DC Name: dcterms:license

DC Definition: A legal document giving official permission to do something with the resource.

DC Comment: Recommended best practice is to identify the license using a URI. Examples of such licenses can be found at http://creativecommons.org/licenses/.

Rights Holder

The person or organization that owns the copyright over the resource. Enter personal names, where possible, in the order suggested by AACR2 chapter 22 for headings of persons, i.e. the entry element should be that part of the name under which the person would normally be listed in authoritative alphabetic lists in his or her language or country of residence or activity (rule 22.4A). Separate other elements with a comma, e.g.:

Property: dcterms:rightsHolder Value String: Collinson, Patrick

Property: dcterms:rightsHolder Value String: Gould, Stephen Jay

Property: dcterms:rightsHolder Value String: Hoskins, W.G.

Property: dcterms:rightsHolder Value String: Ng, Tze Beng


pns_dc XML Encoding:

<dcterms:rightsHolder>Collinson, Patrick</dcterms:rightsHolder>
<dcterms:rightsHolder>Gould, Stephen Jay</dcterms:rightsHolder>
<dcterms:rightsHolder>Hoskins, W.G.</dcterms:rightsHolder>

<dcterms:rightsHolder>Ng, Tze Beng</dcterms:rightsHolder>

Enter corporate names, where possible, in the order suggested by AACR2 chapters 24 for headingds for corporate bodies. In general (rule 24.1) this means entering a corporate body under the name by which it is commonly identified, except when the rules provide for entering it under the name of a higher or related body or the name of a government, e.g.:

Property: dcterms:rightsHolder Value String: Bodleian Library

Property: dcterms:rightsHolder Value String: British Broadcasting Corporation

Property: dcterms:rightsHolder Value String: Loughborough University. Department of Computer Science

Property: dcterms:rightsHolder Value String: United Kingdom. Department for Education and Employment


pns_dc XML Encoding:

<dcterms:rightsHolder>Bodleian Library</dcterms:rightsHolder>
<dcterms:rightsHolder>British Broadcasting Corporation</dcterms:rightsHolder>
<dcterms:rightsHolder>Loughborough University. Department of Computer Science</dcterms:rightsHolder>
<dcterms:rightsHolder>United Kingdom. Department for Education and Employment</dcterms:rightsHolder>


The inclusion of personal and corporate name headings from authority lists constructed according to AACR2, e.g. the Library of Congress Name Authority File (LCNA), is also acceptable.

This information cannot be expressed using simple oai_dc records.


DC Label: Rights Holder

DC Name: dcterms:rightsHolder

DC Definition: A person or organization owning or managing rights over the resource.

DC Comment: Recommended best practice is to use the URI or name of the Rights Holder to indicate the entity.

Audience

The intended audience for the resource, expressed using the UK Educational Levels vocabulary. For example:

Property: dcterms:audience Vocabulary Encoding Scheme: meg:UKEL Value String: UK Educational Level 5


pns_dc XML Encoding:

<dcterms:audience xsi:type="meg:UKEL">UK Educational Level 5</dcterms:audience>

This information cannot be expressed using simple oai_dc records.


DC Label: Audience

DC Name: dcterms:audience

DC Definition: A class of entity for whom the resource is intended or useful.

DC Comment: A class of entity may be determined by the creator or the publisher or by a third party.

Thumbnail Image (Relation)

Where the resource has an associated thumbnail image representation, provide the URI of that image:

Property: pnsterms:thumbnail Value URI: 1234.jpg


pns_dc XML Encoding:

<pnsterms:thumbnail xsi:type="dcterms:URI">http://www.example.org/images/thumbnails/1234.jpg</pnsterms:thumbnail>

Use dc:relation (without the xsi:type attribute) in place of pnsterms:thumbnail when exposing simple oai_dc records.

oai_dc XML Encoding:

<dc:relation>http://www.example.org/images/thumbnails/1234.jpg</dc:relation>


Label: Thumbnail Image

Name: pnsterms:thumbnail

Definition: A thumbnail image representation of the resource.

Comment:

Other Properties

The following properties are in the DCMES but are not used by this application profile. They are provided here for information.

Date

Dates should be entered in W3CDTF format. The following examples are all valid dates:

<dc:date xsi:type="dcterms:W3CDTF">1999</dc:date>

<dc:date xsi:type="dcterms:W3CDTF">1999-12-25</dc:date>


DC Label:

Date

DC Name:

dc:date

DC Definition:

A date associated with an event in the life cycle of the resource.

DC Comment:

Typically, Date will be associated with the creation or availability of the resource. Recommended best practice for encoding the date value is defined in a profile of ISO 8601 and follows the YYYY-MM-DD format.

Source

A free-text description of the original version of a resource.


DC Label:

Source

DC Name:

dc:source

DC Definition:

A Reference to a resource from which the present resource is derived.

DC Comment:

The present resource may be derived from the Source resource in whole or in part. Recommended best practice is to reference the resource by means of a string or number conforming to a formal identification system



Changes made in this version