Difference between revisions of "Data Discovery (DCAT)"

From Federation of Earth Science Information Partners
(<div id="DCAT_Discovery-Mandatory"> updated)
Line 17: Line 17:
  
  
[[Data Discoverability /Accessibility]]
+
[[Data Discoverability]]

Revision as of 05:59, July 31, 2015

The spirals below document concepts for the Common Core metadata specification based on the Data Catalog Vocabulary (DCAT). Where compatible the spiral provides xpath references for DIF, ECHO, ECS, DCAT, ISO, ISO-1 and FGDC documentation dialects.

DCAT for Data Discovery - Mandatory

The Data Catalog Vocabulary (DCAT) is an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web. This spirals includes the required common core attributes for DCAT.

Source: Common Core Reference
ConceptDescriptionDialect (Fit) Paths
Resource TitleA short description of the resource. The title should be descriptive enough so that when a user is presented with a list of titles the general content of the data set can be determined.ADIwg /adiwg:project/adiwg:idinfo/adiwg:citation/adiwg:citeinfo/adiwg:title
DIF /dif:DIF/dif:Entry_Title
DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Title
DCAT /dct:title
Dryad dcterms:title
ECHO /*/echo:ShortName>/*/echo:LongName
ECS /*/ecs:ShortName > /*/ecs:LongName
EML /eml:dataset/eml:title/eml:text
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:citation/fgdc:citeinfo/fgdc:title
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Attribute[@Name='title']/hdf5:Data/hdf5:DataFromFile
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Attribute[@Name='LongName']/hdf5:Data/hdf5:DataFromFile
ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:title/gco:CharacterString
UMM /umm:UMM/umm:CollectionCitation/umm:Title
OGC-SOS /sos:Capabilities/ows:ServiceIdentification/ows:Title
SERF /serf:SERF/serf:Entry_Title
THREDDS /thredds:catalog/thredds:dataset/@name
THREDDS /thredds:catalog/thredds:dataset/thredds:metadata/dc:title
THREDDS //thredds:dataset[1]/@name
netCDF /nc:netcdf/nc:attribute[@nc:name=title]/@nc:value
AbstractA paragraph describing the resource.

Note: This concept is called "Desciption" in Catalog Services for the Web.
ADIwg /adiwg:project/adiwg:idinfo/adiwg:descript/adiwg:abstract
DIF /dif:DIF/dif:Summary/dif:Abstract
DCAT /dct:description
Dryad dcterms:description
ECHO /*/echo:Description
ECS /*/ecs:CollectionDescription
EML /eml:dataset/eml:abstract/eml:descendant
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:descript/fgdc:abstract
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Attribute[@Name='summary']/hdf5:Data/hdf5:DataFromFile
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Attribute[@Name='CollectionDescription']/hdf5:Data/hdf5:DataFromFile
ISO /*/gmd:identificationInfo/*/gmd:abstract/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:abstract/gco:CharacterString
UMM /umm:UMM/umm:Summary
OGC-SOS /sos:Capabilities/ows:ServiceIdentification/ows:Abstract
SERF /serf:SERF/serf:Summary/serf:Abstract
THREDDS //thredds:dataset/thredds:documentation[@type='abstract']
THREDDS //thredds:metadata/thredds:documentation[@type='abstract']
netCDF /nc:netcdf/nc:attribute[@nc:name='summary']/@nc:value
Theme KeywordA word or phrase that describes some aspect of a resource. Can be one of several types.

Note: The general identification keywords usually have a type of "theme" and are refered to as "theme keywords". Other types and vocabularies are used for other information. Service Entry Resource Format (SERF) requires a Science and a Service GCMD Keyword. This concept is called Subject in the CSW Specification.
ADIwg /adiwg:project/adiwg:idinfo/adiwg:keywords/adiwg:theme/adiwg:themekey
DIF (1) /dif:DIF/dif:Parameters/dif:Category
DIF (1) /dif:DIF/dif:Parameters/dif:Topic
DIF (1) /dif:DIF/dif:Parameters/dif:Term
DIF (1) /dif:DIF/dif:Parameters/dif:Variable_Level_1
DIF (1) /dif:DIF/dif:Parameters/dif:Variable_Level_2
DIF (1) /dif:DIF/dif:Parameters/dif:Variable_Level_3
DIF (1) /dif:DIF/dif:Parameters/dif:Detailed_Variable
DCAT /dct:keyword
Dryad dcterms:subject
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:CategoryKeyword
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TopicKeyword
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TermKeyword
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel1Keyword/echo:Value
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel2Keyword/echo:Value
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel3Keyword
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:DetailedVariableKeyword
ECS (1) /*/ecs:DisciplineTopicParameters/ecs:DisciplineKeyword
ECS (1) /*/ecs:DisciplineTopicParameters/ecs:TopicKeyword
ECS (1) /*/ecs:DisciplineTopicParameters/ecs:TermKeyword
ECS (1) /*/ecs:DisciplineTopicParameters/ecs:VariableKeyword
EML (1) /eml:dataset/eml:keywordSet/eml:keyword/eml:text
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:keywords/fgdc:theme/fgdc:themekey
HDF5.1 (1) /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Attribute[@Name='keywords']/hdf5:Data/hdf5:DataFromFile
HDF5.1 (1) /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Group[@Name='DisciplineTopicParameters']/hdf5:Group/hdf5:Attribute[@Name='ECSDisciplineKeyword']/hdf5:Data/hdf5:DataFromFile
HDF5.1 (1) /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Group[@Name='DisciplineTopicParameters']/hdf5:Group/hdf5:Attribute[@Name='ECSTermKeyword']/hdf5:Data/hdf5:DataFromFile
HDF5.1 (1) /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Group[@Name='DisciplineTopicParameters']/hdf5:Group/hdf5:Attribute[@Name='ECSTopicKeyword']/hdf5:Data/hdf5:DataFromFile
HDF5.1 (1) /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Group[@Name='DisciplineTopicParameters']/hdf5:Group/hdf5:Attribute[@Name='ECSVariableKeyword']/hdf5:Data/hdf5:DataFromFile
HDF5.1 (1) /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Group[@Name='DisciplineTopicParameters']/hdf5:Group/hdf5:Group[@Name='ECSParameter']/hdf5:Attribute[@Name='ECSParameterKeyword']/hdf5:Data/hdf5:DataFromFile
ISO (1) /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[gmd:type/gmd:MD_KeywordTypeCode=[normalize-space()="theme"]]/gmd:keyword/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode=[normalize-space()="theme"]]/mri:keyword/gco:CharacterString
UMM (1) /umm:UMM/umm:ScienceKeywords/umm:Category
UMM (1) /umm:UMM/umm:ScienceKeywords/umm:Topic
UMM (1) /umm:UMM/umm:ScienceKeywords/umm:Term
UMM (1) /umm:UMM/umm:ScienceKeywords/umm:VariableLevel1/umm:Value
UMM (1) /umm:UMM/umm:ScienceKeywords/umm:VariableLevel1/umm:VariableLevel2/umm:Value
UMM (1) /umm:UMM/umm:ScienceKeywords/umm:VariableLevel1/umm:VariableLevel2/umm:VariableLevel3/umm:Value
UMM (1) /umm:UMM/umm:ScienceKeywords/umm:DetailedVariable
OGC-SOS (1) /sos:Capabilities/ows:ServiceIdentification/ows:Keywords[ows:Type='theme']/ows:Keyword
SERF /serf:SERF/serf:Keyword
THREDDS (1) //thredds:metadata/thredds:keyword
THREDDS (1) //thredds:dataset/thredds:keyword
netCDF (1) /nc:netcdf/nc:attribute[@nc:name=keywords]/@nc:value
Resource Creation/Revision DateThe date the resource was createdDIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Release_Date
DCAT /dct:issued
ECHO /*/echo:InsertTime
ECHO /*/echo:LastUpdate
ECS /*/ecs:RevisionDate
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:citation/fgdc:citeinfo/fgdc:pubdate
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Attribute[@Name='date_created']/hdf5:Data/hdf5:DataFromFile
ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode=[normalize-space()="creation"]]/gmd:date/gco:Date
ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode=[normalize-space()="creation"]]/gmd:date/gco:DateTime
ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode=[normalize-space()="revision"]]/gmd:date/gco:Date
ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode=[normalize-space()="revision"]]/gmd:date/gco:DateTime
ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode=[normalize-space()="publication"]]/gmd:date/gco:Date
ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode=[normalize-space()="publication"]]/gmd:date/gco:DateTime
ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode=[normalize-space()="creation"]]/cit:date/gco:DateTime
ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode=[normalize-space()="revision"]]/cit:date/gco:DateTime
ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode=[normalize-space()="publication"]]/cit:date/gco:DateTime
SERF /serf:SERF/serf:Service_Citation/serf:Release_Date
THREDDS /thredds:catalog/thredds:metadata/thredds:date[@type='created']
netCDF /nc:netcdf/nc:attribute[@nc:name=date_created]/@nc:value
PublisherPublisher of the cited resourceDIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Publisher
DIF /dif:DIF/dif:Reference/dif:Publisher
DCAT /dct:publisher
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:citation/fgdc:citeinfo/fgdc:pubinfo/fgdc:publish
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Attribute[@Name='publisher']/hdf5:Data/hdf5:DataFromFile
ISO //gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode[normalize-space()="publisher"]]/gmd:organisationName/gco:CharacterString
ISO-1 //cit:CI_Responsibility[cit:role/cit:CI_RoleCode[normalize-space()="publisher"]]/cit:party/cit:CI_Organisation/cit:name/gco:CharacterString
THREDDS //thredds:dataset/thredds:publisher/thredds:name
THREDDS //thredds:metadata/thredds:publisher/thredds:name
netCDF /nc:netcdf/nc:attribute[@nc:name=publisher_name]/@nc:value
Resource ContactThe organization or person responsible for answering questions about the resource.ADIwg /adiwg:project/adiwg:idinfo/adiwg:ptcontac/adiwg:cntinfo
ADIwg /adiwg:project/adiwg:idinfo/adiwg:datacred/adiwg:credorg/adiwg:cntinfo
ADIwg /adiwg:project/adiwg:idinfo/adiwg:datacred/adiwg:credper/adiwg:cntinfo
DIF /dif:DIF/dif:Personnel[dif:Role='INVESTIGATOR']
DIF /serf:SERF/serf:Personnel[serf:Role='INVESTIGATOR']
DCAT /dct:contactPoint
ECHO /*/echo:Contacts/echo:Contact
ECS /CollectionMetaDataFile/CollectionMetaDataSets/Collections/CollectionMetaData/Contact[Role='User Services']
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Attribute[@Name='creator_name']/hdf5:Data/hdf5:DataFromFile
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Group[@Name='ContactPerson']
HDF5.1 /hdf5:HDF5-File/hdf5:RootGroup/hdf5:Group[@Name='METADATA']/hdf5:Group[@Name='COLLECTIONMETADATA']/hdf5:Group[@Name='ContactOrganization']/hdf5:Group[@Name='Data_Originator']
ISO /*/gmd:identificationInfo/*/gmd:pointOfContact
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:pointOfContact
OGC-SOS /sos:Capabilities/ows:ServiceProvider
SERF /serf:SERF/serf:Personnel
THREDDS /thredds:catalog/thredds:dataset/thredds:creator/thredds:name
netCDF /nc:netcdf/nc:attribute[@nc:name=creator_name]/@nc:value
Metadata IdentifierA phrase or string which uniquely identifies the metadata file/record.DIF /dif:DIF/dif:Entry_ID
ISO /*/gmd:fileIdentifier/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:metadataIdentifier/mcc:MD_Identifier
SERF /serf:SERF/serf:Entry_ID
Resource Access ConstraintsInformation about any constraints for accessing the data set. This includes any special restrictions, legal prerequisites, limitations and/or warnings on obtaining the data set. Some words that may be used in this field include: Public, In-house, Limited, Additional detailed instructions on how to access the data can be entered in this field.DIF /dif:DIF/dif:Access_Constraints
DCAT /dct:accessLevel
DCAT dct:accessLevelComment
ECHO /*/echo:RestrictionFlag
ECHO /*/echo:RestrictionComment
ECHO /*/echo:Visible
ECS /*/ecs:AccessConstraints
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:accconst
ISO /*/gmd:identificationInfo/*/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:accessConstraints/gco:CharacterString
ISO /*/gmd:identificationInfo/*/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:otherConstraints/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_LegalConstraints/mco:accessConstraints/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_LegalConstraints/mco:otherConstraints/gco:CharacterString
SERF /serf:DIF/serf:Access_Constraints
THREDDS /thredds:catalog/thredds:dataset/thredds:documentation[@type="rights"]
THREDDS /thredds:catalog/thredds:metadata/thredds:documentation[@type="rights"]
netCDF /nc:netcdf/nc:variable/nc:attribute[@nc:name=license]/@nc:value

xPath Note: The xPaths included in this table use several wildcards. // means any path, so //gmd:CI_ResponsibleParty indicates a gmd:CI_ResponsibleParty anywhere in an XML file. /*/ indicates a single level with several possible elements. This usually indicates one of several concrete realizations of an abstract object. For example /*/gmd:identificationInfo could be gmd:MD_Metadata/gmd:identificationInfo or gmi:MI_Metadata/gmd:identificationInfo and gmd:identificationInfo//*/gmd:descriptiveKeywords could be gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords or gmd:identificationInfo/srv:SV_ServiceIdentification/gmd:descriptiveKeywords. Fit: The fit of the dialect path with the concept is estimated on a scale of 1 = excellent two-way fit, 2 = one-way fit or some other problem, 3 - extension required.


Data Discoverability