SGML: Dublin Core Metadata Elements

SGML: Dublin Core Metadata Elements

From Wed Dec 11 10:57:41 1996
Date: Wed, 11 Dec 1996 10:50:38 -0500
From: (Stu Weibel)

Well, the sense of the list has moved away from my original reading of
the consensus, to the point that I believe there is good reason to
declare another element.

Please review the 'official' list of elements and make any suggestions 
that you think might clarify the wording or intent.



	  Dublin Core Metadata Element Set: Reference Description

The following comprises the reference definition of the Dublin Core
Metadata Element set as of December, 1996.  The elements or their names
are not expected to change substantively from this list, though the
application of some of them are currently experimental and subject to
interpretation.  Further, it is expected that practice will evolve to
include sub-elements for certain of the elements.

Note that elements have a descriptive name intended to convey a common
semantic understanding of the element.  In addition, a formal,
single-word label is specified to make syntactic specification of
elements simpler in encoding schemes.

Element Descriptions 

   1 Title			Label: TITLE

     The name given to the resource by the CREATOR or PUBLISHER.

   2 Author or Creator		Label: CREATOR

     The person(s) or organization(s) primarily responsible for the
     intellectual content of the resource.  For example, authors in the
     case of written documents, artists, photographers, or illustrators
     in the case of visual resources.

   3 Subject and Keywords       Label: SUBJECT

     The topic of the resource, or keywords or phrases that describe
     the subject or content of the resource.  The intent of the
     specification of this element is to promote the use of controlled
     vocabularies and keywords.  This element might well include
     scheme-qualified classification data (for example, Library of
     Congress Classification Numbers or Dewey Decimal numbers) or
     scheme-qualified controlled vocabularies (such as MEdical Subject
     Headings or Art and Architecture Thesaurus descriptors) as well.
   4 Description		Label: DESCRIPTION

     A textual description of the content of the resource, including
     abstracts in the case of document-like objects or content
     descriptions in the case of visual resources.  Future metadata
     collections might well include computational content description
     (spectral analysis of a visual resource, for example) that may not
     be embeddable in current network systems.  In such a case this
     field might contain a link to such a description rather than the
     description itself.

   5 Publisher			Label: PUBLISHER

     The entity responsible for making the resource available in its
     present form, such as a publisher, a university department, or a
     corporate entity.   The intent of specifying this field is to
     identify the entity that provides access to the resource.
   6 Other Contributors		Label: CONTRIBUTORS

     Person(s) or organization(s) in addition to those specified in the
     CREATOR element who have made significant intellectual
     contributions to the resource but whose contribution is secondary
     to the individuals or entities specifed in the CREATOR element
     (for example, editors, transcribers, illustrators, and

   7 Date			Label: DATE

     The date the resource was made available in its present form.  The
     recommended best practice is an 8 digit number in the form
     YYYYMMDD as defined by ANSI X3.30-1985. In this scheme, the date
     element for the day this is written would be 19961203, or December
     3, 1996.  Many other schema are possible, but if used, they should
     be identified in an unambiguous manner.

     [does the group wish to specify RFC 822 dates here as well, or instead of?]   
   8 Resource Type 		Label: TYPE

     The category of the resource, such as home page, novel, poem, working
     paper, technical report, essay, dictionary.  It is expected that
     RESOURCE TYPE will be chosen from an enumerated list of types. A
     preliminary set of such types can be found at the following URL:

   9 Format  			Label: FORMAT
     The data representation of the resource, such as text/html, ASCII,
     Postscript file,  executable application, or JPEG image.  The
     intent of specifying this element is to provide information
     necessary to allow people or machines to make decisions about the
     usability of the encoded data (what hardware and software might be
     required to display or execute it, for example).  As with RESOURCE TYPE,
     FORMAT will be assigned from enumerated lists such as registered
     Internet Media Types (MIME types).  In principal, formats can include
     physical media such as books, serials, or other non-electronic media. 

  10 Resource Identifier 	Label: IDENTIFIER

     String or number used to uniquely identify the resource.  Examples
     for networked resources include URLs and URNs (when implemented). Other
     globally-unique identifiers,such as International Standard
     Book Numbers (ISBN) or other formal names would also be candidates for 
     this element.

  11 Source			Label: SOURCE

     The work, either print or electronic, from which this resource is
     derived, if applicable. For example, an html encoding of a
     Shakespearean sonnet might identify the paper version of the
     sonnet from which the electronic version was transcribed.

  12 Language 			Label: LANGUAGE

     Language(s) of the intellectual content of the resource.  Where practical,
     the content of this field should coincide with the Z39.53 three character
     codes for written languages. 

  13 Relation			Label: RELATION 

     Relationship to other resources.  The intent of specifying this
     element is to provide a means to express relationships among
     resources that have formal relationships to others, but exist as
     discrete resources themselves.  For example, images in a
     document,  chapters in a book, or items in a collection.  A formal
     specification of RELATION is currently under development.  Users
     and developers should understand that use of this element should
     be currently considered experimental.

  14 Coverage			Label: COVERAGE

     The spatial locations and temporal durations characteristic of the
     resource.    Formal specification of COVERAGE is currently under
     development. Users and developers should understand that use of
     this element should be currently considered experimental.

     The content of this element is intended to be a link (a URL or
     other suitable URI as appropriate) to a copyright notice, a
     rights-management statement, or perhaps a server that would
     provide such information in a dynamic way.  The intent of
     specifying this field is to allow providers a means to associate
     terms and conditions or copyright statements with a resource or
     collection of resources.   No assumptions should be made by users
     if such a field is empty or not present.