Last week I sent Eric Miller the following to update the Web page that
OCLC put up with a crosswalk between Dublin Core elements and MARC. Anyone
who has used that information should use this updated document instead for
any possible conversions between DC and MARC fields.
Rebecca Guenther
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Dublin Core/USMARC Crosswalk
In some cases, there are two mappings provided. The first is a
simple mapping and is used if the elements are used without
qualifiers. The second is for a more complex description for
which the elements have qualifiers. There could be a mixture,
but if the particular element is unqualified, then the simple
mapping for that element should be used. Certain defaults have
been assumed as to definitions and qualifiers; if this changes
the list will need to be adjusted. This list has been made
consistent with the GILS/MARC mapping where possible. Where
applicable, subfields are given.
When the list of qualifiers becomes standardized it will be
necessary to modify this document and add to it as appropriate.
Only the most obvious qualifiers have been included now.
USMARC fields are listed with field number, then in parentheses
field name/subfield name (if both the same no subfield name
included). If value of indicator is not provided, use a blank
(H'20').
1 Title Label: TITLE
The name given to the resource by the CREATOR or PUBLISHER.
USMARC: 245$a (Title Statement/Title proper) (with 1st
indicator=0)
2 Author or Creator Label: CREATOR
The person(s) or organization(s) primarily responsible for
the intellectual content of the resource. For example, authors
in the case of written documents, artists, photographers, or
illustrators in the case of visual resources.
USMARC: 100$a (Main Entry--Personal Name) (with 1st indicator=1)
Qualifiers:
If role=corporate: 110$a (Main entry--Corporate Name)
3 Subject and Keywords Label: SUBJECT
The topic of the resource, or keywords or phrases that describe the
subject or content of the resource. The intent of the specification of
this element is to promote the use of controlled vocabularies and
keywords. This element might well include scheme-qualified classification
data (for example, Library of Congress Classification Numbers or Dewey
Decimal numbers) or scheme-qualified controlled vocabularies (such as
MEdical Subject Headings or Art and Architecture Thesaurus descriptors) as
well.
USMARC: 653$a (Index Term--Uncontrolled)
Qualifiers:
If scheme=LCSH: 650$a (Subject added entry--topical term)
If scheme=LCC: 050$a (Library of Congress Call
Number/Classification number)
If scheme=DDC: 082$a (Dewey Decimal Call Number/Classification
number)
4 Description Label: DESCRIPTION
A textual description of the content of the resource, including abstracts
in the case of document-like objects or content descriptions in the case
of visual resources. Future metadata collections might well include
computational content description (spectral analysis of a visual resource,
for example) that may not be embeddable in current network systems. In
such a case this field might contain a link to such a description rather
than the description itself.
USMARC: 520$a (Summary, etc. note)
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.
USMARC: 260$b (Publication, Distribution, etc. (Imprint)/Name of
publisher, distributor, etc.)
6 Other Contributors Label: CONTRIBUTORS
Person(s) or organization(s) in addition to those specified
in the CREATOR element who have made significant intellectual
contributions to the resource but whose contribution is secondary
to the individuals or entities specifed in the CREATOR element
(for example, editors, transcribers, illustrators, and
convenors).
USMARC: 720$a (Added Entry--Uncontrolled Name/Name)
If role=" " Add data content in role= to 720$e (Added Entry--
Uncontrolled Name/Relator Term)
If type=personal: 700$a (Added Entry--Personal Name)
If type=corporate: 710$a (Added Entry--Corporate Name)
Add data in "role=" to 700$e or 710$e as appropriate.
7 Date Label: DATE
The date the resource was made available in its present
form. The recommended best practice is an 8 digit number in the
form YYYYMMDD as defined by ANSI X3.30-1985. In this scheme, the
date element for the day this is written would be 19961203, or
December 3, 1996. Many other schema are possible, but if used,
they should be identified in an unambiguous manner.
USMARC: 260$c (Date of publication, distribution, etc.)
(Will add additional mappings if different types are specified by
type=)
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:
http://www.roads.lut.ac.uk/Metadata/DC-ObjectTypes.html
USMARC: 516$a (Type of Computer File or Data Note)
9 Format Label: FORMAT
The data representation of the resource, such as text/html,
ASCII, Postscript file, executable application, or JPEG image.
The intent of specifying this element is to provide information
necessary to allow people or machines to make decisions about the
usability of the encoded data (what hardware and software might
be required to display or execute it, for example). As with
RESOURCE TYPE, FORMAT will be assigned from enumerated lists such
as registered Internet Media Types (MIME types). In principal,
formats can include physical media such as books, serials, or
other non-electronic media.
USMARC: 538$a (System Details Note)
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.
USMARC: 024$a (with 1st indicator=8) (Other Standard
Identifier/Standard number or code)
If type=URL: 856$u (Uniform Resource Locator) (with 1st
indicator=7)
If type=ISBN: 020$a (International Standard Book Number)
If type=ISSN: 022$a (International Standard Serial Number)
If type=URN: 856$u with initial "urn:" (with 1st indicator=7)
11 Source Label: SOURCE
The work, either print or electronic, from which this
resource is derived, if applicable. For example, an html encoding
of a Shakespearean sonnet might identify the paper version of the
sonnet from which the electronic version was transcribed.
USMARC: 786$t (Data Source Entry/Title) (with 1st indicator=0)
12 Language Label: LANGUAGE
Language of the intellectual content of the resource. The
default expression of natural languages is according to the ISO
639 two letter language codes.
USMARC: 546$a (Language note)
If scheme=ISO 639-2 or scheme=USMARC: 041$a (Language code)
See:
http://www.stonehand.com/unicode/standard/iso639.html.
A three-character language code standard is currently being
ballotted as: ISO 639-2 (not yet available electronically)
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.
USMARC: 787$n (Nonspecific Relationship Entry/Note) (with 1st
indicator=0)
14 Coverage Label: COVERAGE
The spatial locations and temporal durations characteristic
of the resource. Formal specification of COVERAGE is currently
under development. Users and developers should understand that
use of this element should be currently considered experimental.
USMARC: 500$a (General note)
If spatial: 255$c (Cartographic Mathematical Data/Statement of
coordinates)
If temporal: 513$b (Type of Report and Period Covered Note/Period
covered)
15 RIGHTS MANAGEMENT Label: RIGHTS
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.
USMARC: 506$a (Restrictions on Access Note/Terms governing
access)
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