Difference between revisions of "MD Keywords"
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Revision as of 09:31, October 25, 2016
Elements | Definition and Recommended Practice | Examples |
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1 | keyword | 1..* | Vocabulary terms that describe the general science categories, general location, organizations, projects, platforms, instruments associated with the resource. Highly recommend using NASA GCMD keywords. | Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature |
2 | type | 0..1 | Subject matter used to group similar keywords. Use 'theme' for scientific categories, 'place' for locations, etc. Group keywords by themes and authoritative thesaurus. |
<gmd:MD_KeywordTypeCode codeList= "http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme"> theme </gmd:MD_KeywordTypeCode> |
3 | thesaurusName | 0..1 | The citation of the authoritative keyword resource. If the keywords are not supported by an authority, then include a gco:nilReason attribute in the thesaurusName field or write "None" in the citation title field. | http://www.ngdc.noaa.gov/docucomp/227737d0-428b-11df-9879-0800200c9a66.guide |
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