[OAI-implementers] RE: Dublin Core Identifiers Types and Formats
Rebecca S. Guenther
rgue@loc.gov
Thu, 15 Aug 2002 10:20:16 -0400 (EDT)
> Message: 1
> From: "David Valentine" <valentine@library.ucsb.edu>
> To: <oai-implementers@oaisrv.nsdl.cornell.edu>
> Cc: "adept-ops" <adept-ops@alexandria.ucsb.edu>, <oai@dpc.ucar.edu>
> Date: Tue, 13 Aug 2002 13:48:34 -0700
> Subject: [OAI-implementers] Dublin Core Identifiers Types and Formats for multi-file data records
>
> This is a multi-part message in MIME format.
>
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> charset="iso-8859-1"
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>
> Question about records, and identifiers:
>
> Geographic data often comprises many files (tiff with tiff world, in
> this case). We have catalog records of these files. The question
> becomes what are we describing when I point to a catalog record which
> lists the various pieces, rather than the actual image/data.
>
> If I point at a catalog record, would this make the OAI record a
> service? or is it still an image? or is it both?
I would think that in this case the catalog record is serving as a
surrogate for the actual image. That is what the user would be looking
for.
> Since the final resource is really an image, I am planning on leaving
> the type as "image", with a format of image/tif (even though no
> image/tif exists in the official dcmi type vocabulary (
> http://www.isi.edu/in-notes/iana/assignments/media-types/media-types )
The DCMI type vocabulary is used with the element Resource type, which is
not the same as the element Format. Resource type is defined as "The
nature or genre of the content of the resource." The designator image/tiff
is the physical format, which would be used in Format (as you've done
below) and wouldn't be appropriate in Type. So what you've done for these
2 elements is correct.
Rebecca
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^ Rebecca S. Guenther ^^
^^ Senior Networking and Standards Specialist ^^
^^ Network Development and MARC Standards Office ^^
^^ 1st and Independence Ave. SE ^^
^^ Library of Congress ^^
^^ Washington, DC 20540-4402 ^^
^^ (202) 707-5092 (voice) (202) 707-0115 (FAX) ^^
^^ rgue@loc.gov ^^
^^ ^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> I've attached a present draft of the sample record.
>
> David Valentine
> Map & Imagery Laboratory
> UCSB Davidson Library
> phone: 805 893 4545
> fax: 805 893 8799
>
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> Content-Type: text/xml;
> name="drg_record.xml"
> Content-Transfer-Encoding: quoted-printable
> Content-Disposition: attachment;
> filename="drg_record.xml"
>
> <?xml version=3D"1.0" encoding=3D"UTF-8"?>=0A=
> <GetRecord xmlns=3D"http://www.w3.org/2001/XMLSchema-instance" =
> xsi:schemaLocation=3D"http://www.openarchives.org/OAI/1.1/OAI_GetRecord =
> http://www.openarchives.org/OAI/1.1/OAI_GetRecord.xsd">=0A=
> <responseDate xmlns=3D"">2002-08-13T13:36:12-08:00</responseDate>=0A=
> <requestURL =
> xmlns=3D"">http://localhost:8080/oaib/oaib?identifier=3Do32114g8&meta=
> dataPrefix=3Doai_dc&verb=3DGetRecord</requestURL>=0A=
> <record xmlns=3D"">=0A=
> <header>=0A=
> <identifier>o32114g8</identifier>=0A=
> <datestamp>2002-01-01</datestamp>=0A=
> </header>=0A=
> <metadata>=0A=
> <dc xmlns=3D"http://www.w3.org/2000/10/XMLSchema-instance" =
> xsi:schemaloc=3D"http://purl.org/dc/elements/1.1/ =
> http://oai.dlib.vt.edu/OAI/1.1/dc.xsd">=0A=
> <identifier xmlns=3D""> =
> drg_24k_ca:o32114g8</identifier>=0A=
> <identifier xmlns=3D"">N3245-W11452.5/7.5</identifier>=0A=
> <identifier xmlns=3D""> =
> http://middleware.alexandria.ucsb.edu/mw/servlet/wimp_metadata?view=3Dful=
> l&id=3Ddrg_24k_ca:o32114g8</identifier>=0A=
> <creator xmlns=3D"">United States Geological =
> Survey</creator>=0A=
> <date xmlns=3D"">1963-01-01</date>=0A=
> <title xmlns=3D"">DRG o32114g8, Digital Raster Graphic of=0A=
> CACTUS, CA CA</title>=0A=
> <subject xmlns=3D"">Maps - Digital - Raster</subject>=0A=
> <description xmlns=3D"">DRGs (Digital Raster Graphics) =
> are=0A=
> scans of the U.S. Geological=0A=
> Survey topographic quadrangles a=0A=
> DRG is composed of a TIFF file and a=0A=
> TIFF World file. TIFF World files are needed to tile=0A=
> adjacent DRGs. For more detailed technical=0A=
> information than what appears in this record,=0A=
> consult series metadata. Files are available both=0A=
> on-line and on computer optical disc =
> (CD-ROM).</description>=0A=
> <publisher xmlns=3D"">Teale Data Center, Sacramento, =
> CA</publisher>=0A=
> <contributor xmlns=3D"">Alexandria Digital =
> Libary</contributor>=0A=
> <type xmlns=3D"">maps</type>=0A=
> <type xmlns=3D"">=0A=
> <DCMIType>image</DCMIType>=0A=
> </type>=0A=
> <format xmlns=3D"">=0A=
> <IMT>image/TIFF</IMT>=0A=
> </format>=0A=
> <format xmlns=3D"">digital TIFF</format>=0A=
> <source xmlns=3D""/>=0A=
> <relation xmlns=3D""/>=0A=
> <coverage xmlns=3D"">=0A=
> <placename>CACTUS, CA, United States</placename>=0A=
> <spatial>=0A=
> <Box projection=3D"Geographic">=0A=
> <northlimit units=3D"signed decimal =
> degrees">32.87</northlimit>=0A=
> <eastlimit units=3D"signed decimal =
> degrees">-114.9</eastlimit>=0A=
> <southlimit units=3D"signed decimal =
> degrees">32.75</southlimit>=0A=
> <westlimit units=3D"signed decimal =
> degrees">-115.0</westlimit>=0A=
> </Box>=0A=
> </spatial>=0A=
> </coverage>=0A=
> <rights xmlns=3D"">Access constraints None. </rights>=0A=
> <rights xmlns=3D""> Use constraints Uncopyrighted. =
> </rights>=0A=
> <rights xmlns=3D"">Legal disclaimer The Regents of the=0A=
> University of California disclaim any applicable=0A=
> implied warranties, including, but not limited to,=0A=
> the implied warranties of merchantability and=0A=
> fitness for a particular purpose. In addition, no=0A=
> warranty whatsoever accompanies the data available=0A=
> herein, and it is provided on an "as is"=0A=
> basis. The Regents of the University of California=0A=
> shall not be liable for any direct, indirect,=0A=
> special, incidental, or consequential damages=0A=
> arising out of the use of this data or from making=0A=
> this data available, even if it has been informed of=0A=
> the possibility of such damages. </rights>=0A=
> </dc>=0A=
> </metadata>=0A=
> </record>=0A=
> </GetRecord>=0A=
>
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