Data Discovery (UMM-Common)

The Unified Metadata Model Common Profile (UMM-Common) is a NASA recommendation for describing Metadata in NASA's Common Metadata Repository (CMR). This profile includes the concepts that NASA considers common to all 6 UMM Profile recommendations. The recommendation includes two levels; Required, and Optional. The tables below show the concepts included in each level, and the concept mapping for NASA metadata dialects (ISO 19115, ISO 19115-1, ECHO, DIF-10 and DIF).

UMM-Common Required

Concept	Description	Dialect (Fit) Paths
Metadata Dates	Dates associated with the metadata.	DIF /*/dif:DIF_Creation_Date DIF /*/dif:Future_DIF_Review_Date DIF /*/dif:Last_DIF_Revision_Date DIF-10 /*/dif:Metadata_Dates/dif:Metadata_Creation DIF-10 /*/dif:Metadata_Dates/dif:Metadata_Last_Revision DIF-10 /*/dif:Metadata_Dates/dif:Metadata_Future_Review DIF-10 /dif:DIF/dif:Metadata_Dates/dif:Metadata_Delete ECHO /*/echo:RevisionDate ISO /*/gmd:dateStamp/gco:Date ISO /*/gmd:dateStamp/gco:DateTime ISO-1 /mdb:MD_Metadata/mdb:dateInfo/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='lastUpdate']/cit:date/gco:DateTime ISO-1 /mdb:MD_Metadata/mdb:metadataMaintenance/mmi:MD_MaintenanceInformation/mmi:maintenanceDate/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='nextUpdate']/cit:date/gco:DateTime ISO-1 /mdb:MD_Metadata/mdb:metadataMaintenance/mmi:MD_MaintenanceInformation/mmi:maintenanceDate/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='expiry']/cit:date/gco:DateTime
Resource Title	A 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.	DIF /dif:DIF/dif:Entry_Title DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Title DIF-10 /dif:DIF/dif:Entry_Title DIF-10 /dif:DIF/dif:Dataset_Citation/dif:Dataset_Title ECHO /*/echo:ShortName | /*/echo:LongName ECHO /*/echo:DataSetId ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:title//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:title//*
Abstract	A paragraph describing the resource. Note: This concept is called "Desciption" in Catalog Services for the Web.	DIF /dif:DIF/dif:Summary DIF /dif:DIF/dif:Summary/dif:Abstract DIF-10 /dif:DIF/dif:Summary/dif:Abstract ECHO /*/echo:Description ISO /*/gmd:identificationInfo/*/gmd:abstract//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:abstract//*
Responsibility	Organizations, people and roles associated with the data.	DIF /*/dif:Data_Center//* DIF /*/dif:Personnel//* DIF /*/dif:Personnel/dif:Role DIF-10 /*/dif:Organization//* DIF-10 /*/dif:Personnel//* DIF-10 /*/dif:Personnel/dif:Role ECHO /*/echo:ProcessingCenter ECHO /*/echo:ArchiveCenter ECHO /*/echo:Contacts/echo:Contact ECHO /*/echo:Contacts/echo:Contact/echo:Role ISO //gmd:CI_ResponsibleParty//* ISO //gmd:CI_ResponsibleParty/gmd:role/gmd:CI_RoleCode ISO-1 //cit:CI_Responsibility//* ISO-1 //cit:CI_Responsibility/cit:role/cit:CI_RoleCode
Party	Contact information associated with the resource through the party element.	DIF /*/dif:Personnel//* DIF-10 /*/dif:Personnel/dif:Contact_Person//* DIF-10 /*/dif:Personnel/dif:Role ECHO /*/echo:Contacts/echo:Contact//* ISO //gmd:CI_ResponsibleParty/gmd:individualName//* ISO //gmd:CI_ResponsibleParty/gmd:organisationName//* ISO //gmd:CI_ResponsibleParty/gmd:contactInfo//* ISO-1 //cit:CI_Responsibility/cit:party/cit:CI_Individual/cit:name//* ISO-1 //cit:CI_Responsibility/cit:party/cit:CI_Organisation/cit:name//* ISO-1 //cit:CI_Responsibility/cit:party/*/cit:contactInfo
Processing Level	A code that indicates the extent of processing done in the creation of a dataset.	DIF /*/dif:Extended_Metadata/dif:Metadata/dif:Name='ProcessingLevelId' DIF-10 /*/dif:Product_Level_Id ECHO /*/echo:ProcessingLevelId ISO /*/gmd:contentInfo/*/gmd:processingLevelCode/gmd:MD_Identifier/gmd:code//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:processingLevel/mcc:MD_Identifier/mcc:code//*
Keyword	A word or phrase that describes some aspect of a resource. Can be one of several types.	DIF /*/dif:Keyword DIF /*/dif:AncillaryKeyword DIF /dif:DIF/dif:Location/dif:Location_Category DIF /dif:DIF/dif:Location/dif:Location_Type DIF /dif:DIF/dif:Location/dif:Location_Subregion1 DIF /dif:DIF/dif:Location/dif:Location_Subregion2 DIF /dif:DIF/dif:Location/dif:Location_Subregion3 DIF /dif:DIF/dif:Location/dif:Detailed_Location DIF /dif:DIF/dif:Sensor_Name/dif:Short_Name DIF /dif:DIF/dif:Sensor_Name/dif:Long_Name DIF /*/dif:Source_Name/dif:Short_Name DIF /*/dif:Source_Name/dif:Long_Name DIF /*/dif:Project/dif:Short_Name DIF /*/dif:Project/dif:Short_Name DIF-10 /*/dif:Science_Keywords/dif:Category DIF-10 /*/dif:Science_Keywords/dif:Topic DIF-10 /*/dif:Science_Keywords/dif:Term DIF-10 /*/dif:Science_Keywords/dif:Variable_Level_1 DIF-10 /*/dif:Science_Keywords/dif:Variable_Level_2 DIF-10 /*/dif:Science_Keywords/dif:Variable_Level_3 DIF-10 /*/dif:Science_Keywords/dif:Detailed_Variable DIF-10 /*/dif:Ancillary_Keyword DIF-10 /dif:DIF/dif:Location/dif:Location_Category DIF-10 /dif:DIF/dif:Location/dif:Location_Type DIF-10 /dif:DIF/dif:Location/dif:Location_Subregion1 DIF-10 /dif:DIF/dif:Location/dif:Location_Subregion2 DIF-10 /dif:DIF/dif:Location/dif:Location_Subregion3 DIF-10 /dif:DIF/dif:Location/dif:Detailed_Location DIF-10 /dif:DIF/dif:Platform/dif:Instrument/dif:Short_Name DIF-10 /dif:DIF/dif:Platform/dif:Instrument/dif:Long_Name DIF-10 /*/dif:Platform/dif:Short_Name DIF-10 /*/dif:Platform/dif:Long_Name DIF-10 /*/dif:Project/dif:Campaign ECHO /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:CategoryKeyword ECHO /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TopicKeyword ECHO /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TermKeyword ECHO /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel1Keyword/echo:Value ECHO /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel1Keyword/echo:VariableLevel2Keyword/echo:Value ECHO /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel1Keyword/echo:VariableLevel2Keyword/echo:VariableLevel3Keyword ECHO /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:DetailedVariableKeyword ECHO /*/echo:ScienceKeywords/echo:ScienceKeyword//* ECHO /*/echo:Spatial/echo:GranuleLocality/echo:LocalityValue ECHO /*/SpatialKeywords/Keyword ECHO /*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:ShortName ECHO /*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:LongName ECHO //echo:Platforms/echo:Platform/echo:ShortName ECHO //echo:Platforms/echo:Platform/echo:LongName ECHO /*/echo:Campaigns/echo:Campaign/echo:ShortName ECHO /*/echo:Campaigns/echo:Campaign/echo:LongName ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[normalize-space(gmd:type/gmd:MD_KeywordTypeCode)='place']/gmd:keyword//* ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[normalize-space(gmd:type/gmd:MD_KeywordTypeCode)='instrument']/gmd:keyword//* ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[normalize-space(gmd:type/gmd:MD_KeywordTypeCode)='platform']/gmd:keyword//* ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[normalize-space(gmd:type/gmd:MD_KeywordTypeCode)='project']/gmd:keyword//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[normalize-space(mri:type/mri:MD_KeywordTypeCode)='theme']/mri:keyword//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[normalize-space(mri:type/mri:MD_KeywordTypeCode)='place']/mri:keyword//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicDescription/gex:geographicIdentifier/mcc:MD_Identifier/mcc:code//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[normalize-space(mri:type/mri:MD_KeywordTypeCode)='instrument']/mri:keyword//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[normalize-space(mri:type/mri:MD_KeywordTypeCode)='platform']/mri:keyword//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[normalize-space(mri:type/mri:MD_KeywordTypeCode)='project']/mri:keyword//*
Spatial Extent	The spatial extent of the resource.	DIF /dif:DIF/dif:Spatial_Coverage//* DIF-10 /dif:DIF/dif:Spatial_Coverage/dif:Geometry//* DIF-10 /dif:Spatial_Coverage/dif:Orbit_Parameters//* DIF-10 /dif:DIF/dif:Spatial_Coverage/dif:Vertical_Spatial_Info//* ECHO /*/echo:Spatial/echo:HorizontalSpatialDomain//* ECHO /*/echo:VerticalSpatialDomain//* ECHO /*/echo:Spatial[SpatialCoverageType='Orbit'] | /*/echo:Spatial[GranuleSpatialRepresentation='ORBIT'] ECHO /*/echo:OrbitCalculatedSpatialDomains/echo:OrbitCalculatedSpatialDomain//* ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:extent/gex:EX_Extent/gex:geographicElement//*
Temporal Extent	The temporal extent of the resource	DIF /*/dif:Temporal_Coverage//* DIF-10 /*/dif:Temporal_Coverage//* ECHO /*/Temporal//* ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent//* ISO-1 /*/mri:MD_DataIdentification/mri:extent/gex:EX_Extent/gex:temporalElement/gex:EX_TemporalExtent//*
Related URL	Resource related URLs that include project home pages, resource information pages, services, related data archives/servers, metadata extensions, direct links to online software packages, web mapping services, links to images, documents, or other data	DIF /*/dif:Related_URL/dif:URL DIF /*/dif:Multimedia_Sample/dif:URL DIF-10 /*/dif:Related_URL/dif:URL DIF-10 /*/dif:Multimedia_Sample/dif:URL ECHO /*/echo:OnlineAccessURLs/echo:OnlineAccessURL/echo:URL ECHO /*/echo:OnlineResources/echo:OnlineResource/echo:URL ECHO /*/AssociatedBrowseImages ECHO /*/AssociatedBrowseImageUrls ISO //gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:linkage/gmd:URL ISO /*/gmd:identificationInfo/*/gmd:graphicOverview/gmd:MD_BrowseGraphic/gmd:fileName//* ISO /*/gmd:identificationInfo/*/gmd:graphicOverview/gmd:MD_BrowseGraphic/gmx:fileName//* ISO-1 //mrd:MD_DigitalTransferOptions/mrd:onLine/cit:CI_OnlineResource/cit:linkage//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:graphicOverview/mcc:MD_BrowseGraphic/mcc:fileName//*
Platform Short Name	The platform used to collect the observations.	DIF /dif:DIF/dif:Source_Name/dif:Short_Name DIF-10 /dif:DIF/dif:Platform/dif:Short_Name ECHO /*/echo:Platforms/echo:Platform/echo:ShortName ISO //gmi:platform/*/gmi:identifier/gmd:MD_Identifier/gmd:code//* ISO-1 /mdb:MD_Metadata/mdb:acquisitionInformation/mac:MI_AcquisitionInformation/mac:platform/*/mac:identifier/mcc:MD_Identifier/mcc:code//*
Instrument Short Name	Short name (abbreviation) for the Instrument used to collect the observations.	DIF /dif:DIF/dif:Sensor_Name/dif:Short_Name DIF-10 /*/dif:Platform/dif:Instrument/dif:Short_Name ECHO /*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:ShortName ISO //gmi:instrument/*/gmi:identifier/gmd:MD_Identifier/gmd:code//* ISO-1 /mdb:MD_Metadata/mdb:acquisitionInformation/mac:MI_AcquisitionInformation/mac:instrument/*/mac:identifier/mcc:MD_Identifier/mcc:code//*
Project Name	The name of the project that the resource was associated with.	DIF /dif:DIF/dif:Project/dif:Short_Name DIF /dif:DIF/dif:Project/dif:Long_Name DIF-10 /dif:DIF/dif:Project/dif:Short_Name DIF-10 /dif:DIF/dif:Project/dif:Long_Name ECHO /*/echo:Campaigns/echo:Campaign/echo:ShortName ECHO /*/echo:Campaigns/echo:Campaign/echo:LongName ISO /*/gmd:identificationInfo/*/gmd:aggregationInfo/gmd:MD_AggregateInformation[normalize-space(gmd:associationType/gmd:DS_AssociationTypeCode)='largerWorkCitation' and normalize-space(gmd:initiativeType/gmd:DS_InitiativeTypeCode)='project']/gmd:aggregateDataSetName/gmd:CI_Citation/gmd:title//* ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[normalize-space(gmd:type/gmd:MD_KeywordTypeCode)='project']/gmd:keyword//* ISO /gmi:MI_Metadata/gmi:acquisitionInformation/gmi:MI_AcquisitionInformation/gmi:operation/gmi:MI_Operation/gmi:citation/gmd:CI_Citation//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:associatedResource/mri:MD_AssociatedResource[normalize-space(mri:initiativeType/mri:DS_InitiativeTypeCode)='project']/mri:name/cit:CI_Citation/cit:title//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[normalize-space(mri:type/mri:MD_KeywordTypeCode)='project']/mri:keyword//*

UMM-Common Optional

Concept	Description	Dialect (Fit) Paths
Metadata Language	Language of the metadata	ISO /*/gmd:language//* ISO /*/gmd:language/gmd:LanguageCode ISO-1 /mdb:MD_Metadata/mdb:defaultLocale/lan:PT_Locale/lan:language/lan:LanguageCode
Resource Language	The language of the resource.	DIF /dif:DIF/dif:Data_Set_Language DIF-10 /dif:DIF/dif:Dataset_Language ISO /*/gmd:identificationInfo/*/gmd:language//* ISO /*/gmd:identificationInfo/*/gmd:language/gmd:LanguageCode ISO-1 /mdb:MD_Metadata/mdb:defaultLocale/lan:PT_Locale/lan:language/lan:LanguageCode ISO-1 /mdb:MD_Metadata/mdb:otherLocale/lan:PT_Locale/lan:language/lan:LanguageCode
Data Dates	Dates associated with the data.	DIF-10 /*/dif:Metadata_Dates/dif:Data_Creation DIF-10 /*/dif:Metadata_Dates/dif:Data_Last_Revision DIF-10 /*/dif:Metadata_Dates/dif:Data_Future_Review DIF-10 /*/dif:Metadata_Dates/dif:Data_Delete ECHO /*/echo:DataGranule/echo:ProductionDateTime ECHO /*/echo:DeleteTime ECHO /*/echo:InsertTime ECHO /*/echo:LastUpdate ISO //gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date[normalize-space(gmd:dateType/gmd:CI_DateTypeCode)='creation']/gmd:date//* ISO //gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date[normalize-space(gmd:dateType/gmd:CI_DateTypeCode)='creation']/gmd:dateTime//* ISO //gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date[normalize-space(gmd:dateType/gmd:CI_DateTypeCode)='revision']/gmd:date//* ISO //gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date[normalize-space(gmd:dateType/gmd:CI_DateTypeCode)='revision']/gmd:dateTime//* ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[normalize-space(cit:dateType/cit:CI_DateTypeCode)='creation']/cit:date//* ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[normalize-space(cit:dateType/cit:CI_DateTypeCode)='lastRevision']/cit:date//* ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[normalize-space(cit:dateType/cit:CI_DateTypeCode)='nextUpdate']/cit:date//* ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[normalize-space(cit:dateType/cit:CI_DateTypeCode)='expiry']/cit:date//*
Purpose	A paragraph describing the original purpose for collecting the dataset.	DIF /dif:DIF/dif:Summary/dif:Purpose DIF-10 /dif:DIF/dif:Summary/dif:Purpose ECHO /*/SuggestedUsage ISO /*/gmd:identificationInfo/*/gmd:purpose//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:purpose//*
Resource Citation	Citation for the resource.	DIF /*/dif:Data_Set_Citation DIF-10 /*/dif:Dataset_Citation ECHO /*/echo:CitationForExternalPublication ECHO /*/echo:LongName ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:otherCitationDetails//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/srv:SV_ServiceIdentification/mri:citation/cit:CI_Citation//*
Quality Statement	Information about the quality of the data or any quality assurance procedures followed in producing the data.	DIF /dif:DIF/dif:Quality DIF-10 /dif:DIF/dif:Quality ECHO /echo:Collection/Temporal/PrecisionOfSeconds ECHO /echo:Granule/MeasuredParameters/MeasuredParameter/QAStats//* ECHO /echo:Granule/MeasuredParameters/MeasuredParameter/QAFlags//* ISO /gmi:MI_Metadata/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:report//* ISO-1 /mdb:MD_Metadata/mdb:dataQualityInfo/mdq:DQ_DataQuality/mdq:standaloneQualityReport/mdq:DQ_StandaloneQualityReportInformation//* ISO-1 /mdb:MD_Metadata/mdb:dataQualityInfo/mdq:DQ_DataQuality/mdq:report//*
Resource Use Constraints	Information about how the data may or may not be used after access is granted to assure the protection of privacy or intellectual property. This includes any special restrictions, legal prerequisites, terms and conditions, and/or limitations on using the data set. Data providers may request acknowledgement of the data from users and claim no responsibility for quality and completeness of data.	DIF /dif:DIF/dif:Use_Constraints DIF-10 /dif:DIF/dif:Use_Constraints ECHO /*/echo:RestrictionFlag ECHO /*/echo:RestrictionComment ISO /*/gmd:identificationInfo/*/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:otherConstraints//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_Constraints/mco:useLimitation//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_LegalConstraints/mco:useConstraints/mco:MD_RestrictionCode ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_LegalConstraints/mco:otherConstraints//*
Resource Access Constraints	Information 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 DIF-10 /dif:DIF/dif:Access_Constraints ECHO /*/echo:RestrictionFlag ECHO /*/echo:RestrictionComment ECHO /*/echo:Visible ISO /*/gmd:identificationInfo/*/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:accessConstraints/gmd:MD_RestrictionCode ISO /*/gmd:identificationInfo/*/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:otherConstraints//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_LegalConstraints/mco:accessConstraints//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_LegalConstraints/mco:otherConstraints//*
Metadata Association	Other metadata resources that are associated with or dependent on the data described by the metadata.	DIF /*/dif:Parent_DIF DIF-10 /*/dif:Parent_DIF DIF-10 /*/dif:Metadata_Association//* ECHO /*/echo:CollectionAssociations/echo:CollectionAssociation[CollectionType != 'Input'] ISO //gmd:MD_AggregateInformation/gmd:aggregateDataSetName//* ISO /*/gmd:parentIdentifier/gco:CharacterString
Publication Information	Bibliographic citations pertaining to the data.	DIF /*/dif:Reference//* DIF-10 /*/dif:Reference//* ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation//*
Topic Category	High level category enumeration used in ISO	DIF /dif:DIF/dif:ISO_Topic_Category DIF-10 /dif:DIF/dif:ISO_Topic_Category ISO /*/gmd:identificationInfo/*/gmd:topicCategory/gmd:MD_TopicCategoryCode ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:topicCategory/mri:MD_TopicCategoryCode
Ancillary Keyword	This field allows authors to provide any words or phrases needed to further describe the data set.	DIF-10 /dif:DIF/dif:Ancillary_Keyword ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword
Additional Attributes	Attributes used to describe unique characteristics of the collection which extend beyond those defined in the model.	DIF /*/dif:Extended_Metadata/dif:Metadata[dif:Name='AdditionalAttribute'] DIF-10 /*/dif:Additional_Attributes ECHO /*/echo:AdditionalAttributes/echo:AdditionalAttribute//* ISO //eos:AdditionalAttribute//* ISO-1 //eos:AdditionalAttributes/eos:AdditionalAttribute
Media	Media on which the resource is available	DIF /*/dif:Distribution/dif:Distribution_Media DIF-10 /dif:DIF/dif:Distribution/dif:Distribution_Media ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:offLine/gmd:MD_Medium/gmd:name/gmd:MD_MediumNameCode ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:offLine/gmd:MD_Medium/gmd:name/gmd:MD_MediumNameCode ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:transferOptions/mrd:MD_DigitalTransferOptions/mrd:offLine/mrd:MD_Medium/mrd:name/cit:CI_Citation/cit:title//*
Resource Format	The physical or digital manifestation of the resource	DIF /*/dif:Distribution/dif:Distribution_Format DIF-10 /*/dif:Distribution/dif:Distribution_Format ECHO /*/echo:DataFormat ECHO /*/CSDTDescriptions/CSDTDescription/Implementation ECHO /*/AdditionalAttributes/AdditionalAttribute[Name='FileFormat']/Value ISO //gmd:resourceFormat/gmd:MD_Format/gmd:name//* ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:resourceFormat/mrd:MD_Format/mrd:formatSpecificationCitation/cit:CI_Citation/cit:identifier/mcc:MD_Identifier/mcc:code
Transfer Size	The size of the digital resource	DIF /dif:DIF/dif:Distribution/dif:Distribution_Size DIF-10 /dif:DIF/dif:Distribution/dif:Distribution_Size ECHO /*/DataGranule/SizeMBDataGranule ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributionFormat/gmd:MD_Format/gmd:formatDistributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:transferSize/gco:Real ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:transferSize/gco:Real ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributionFormat/mrd:MD_Format/mrd:formatDistributor/mrd:MD_Distributor/mrd:distributorTransferOptions/mrd:MD_DigitalTransferOptions/mrd:transferSize/gco:Real ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributor/mrd:MD_Distributor/mrd:distributorTransferOptions/mrd:MD_DigitalTransferOptions/mrd:transferSize/gco:Real
Resource Cost or Fees	Cost associated with access to the resource	DIF /dif:DIF/dif:Distribution/dif:Fees DIF-10 /dif:DIF/dif:Distribution/dif:Fees ECHO /*/echo:Price ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributionOrderProcess/gmd:MD_StandardOrderProcess/gmd:fees//* ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributionFormat/mrd:MD_Format/mrd:formatDistributor/mrd:MD_Distributor/mrd:distributionOrderProcess/mrd:MD_StandardOrderProcess/mrd:fees//*
TwoDCoordinateSystem	Bounding extent defined in two dimensions with min and max values.	DIF-10 /dif:DIF/dif:Spatial_Coverage/dif:Spatial_Info/dif:TwoD_Coordinate_System ECHO /*/TwoDCoordinateSystems//* ECHO /Granule/TwoDCoordinateSystem//* ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicDescription/gmd:geographicIdentifier ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicDescription/gex:geographicIdentifier
Sensor Short Name	The sensory sub-component of an instrument.	DIF-10 /*/dif:Platform/dif:Instrument/dif:Sensor/dif:Short_Name ECHO /*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:Sensors/echo:Sensor/echo:ShortName ISO //eos:sensor/eos:EOS_Sensor/eos:identifier/gmd:MD_Identifier/gmd:code//*

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