Data Discovery (ACDD)
From Earth Science Information Partners (ESIP)
The netCDF Group at Unidata recommended a set of netCDF attributes (the NetCDF Attribute Convention for Dataset Discovery) to enable data discovery nearly a decade ago. This convention was designed to augment the Climate-Forecast conventions that were already being used to ease access to data in netCDF by tools. The ACDD was adopted as the basis for the ncISO tool developed at NGDC and incorporated into THREDDS with the goal of providing ISO 19115-compliant discovery metadata for datasets in THREDDS that supported the ACDD. The governance of these conventions has since been taken over by the ESIP Documentation Cluster.
This page includes ACDD recommendations at three levels: highly recommended, recommended, and suggested.
Attribute Convention for Data Discovery - Highly Recommended
These attributes are highly recommended by the Attribute Convention for Data Discovery
Source: ACDD Home Page
| Concept | Description | Dialect (Fit) Paths |
|---|---|---|
| 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 ECHO /*/echo:ShortName>/*/echo:LongName ECS /*/ecs:ShortName > /*/ecs:LongName DCAT dct:title FGDC /fgdc:metadata/fgdc:idinfo/fgdc:citation/fgdc:citeinfo/fgdc:title 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 |
| Abstract | A paragraph describing the resource. Note: This concept is called "Desciption" in Catalog Services for the Web. | DIF /dif:DIF/dif:Summary/dif:Abstract ECHO /*/echo:Description ECS /*/ecs:CollectionDescription DCAT dct:description FGDC /fgdc:metadata/fgdc:idinfo/fgdc:descript/fgdc:abstract ISO /*/gmd:identificationInfo/*/gmd:abstract/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:abstract/gco:CharacterString |
| Keyword | A 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. | 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 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 DCAT dct:keyword FGDC (1) /fgdc:metadata/fgdc:idinfo/fgdc:keywords/fgdc:theme/fgdc:themekey ISO (1) /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[gmd:type/gmd:MD_KeywordTypeCode='theme']/gmd:keyword/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode='theme']/mri:keyword/gco:CharacterString |
Attribute Convention for Data Discovery - Recommended
These attributes are recommended by the Attribute Convention for Data Discovery
Source: ACDD Home Page
| Concept | Description | Dialect (Fit) Paths |
|---|---|---|
| Resource Identifier | Identifier for the resource described by the metadata | DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_DOI ECHO /*/echo:DataSetId ECHO (1) /*/echo:ShortName | /*/echo:LongName ECS /ecs:LocalGranuleID ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:identifier/mcc:MD_Identifier/mcc:code/gco:CharacterString |
| Naming Authority | The organization responsible for the maintenance of the identifier (namespace) Note: DIF and ECHO use the Global Change Master Directory (GCMD) keywords. | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:authority ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:identifier/mcc:MD_Identifier/mcc:codeSpace/gco:CharacterString |
| Keyword Vocabulary | If you are following a guideline or using a shared vocabulary for the words/phrases in your "keywords" attribute, put the name of that guideline here. Note: DIF, ECHO and ECS require that theme keywords come from the Global Change Master Directory list. | ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[gmd:type/gmd:MD_KeywordTypeCode='theme']/gmd:thesaurusName/gmd:CI_Citation/gmd:title/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode='theme']/mri:thesaurusName/cit:CI_Citation |
| Common Data Model Datatype | The THREDDS data type for this resource. Note: Current values: vector, grid, textTable, tin, stereoModel, video. | ISO /*/gmd:identificationInfo/*/gmd:spatialRepresentationType/gmd:MD_SpatialRepresentationTypeCode ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:spatialRepresentationType/mcc:MD_SpatialRepresentationTypeCode |
| Lineage Statement | Information and references for sources and processes that were used to create the dataset and an audit trail for modifications to the original data. | ISO /*/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:lineage/gmd:LI_Lineage/gmd:statement/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:resourceLineage/mrl:LI_Lineage/mrl:statement/gco:CharacterString |
| Resource Creation/Revision Date | The date the resource was created | DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Release_Date ECHO /*/echo:InsertTime ECHO /*/echo:LastUpdate ECS /*/ecs:RevisionDate DCAT dct:modified ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='creation']/gmd:date/gco:Date ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='creation']/gmd:date/gco:DateTime ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='revision']/gmd:date/gco:Date ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='revision']/gmd:date/gco:DateTime ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='publication']/gmd:date/gco:Date ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='publication']/gmd:date/gco:DateTime ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='creation']/cit:date/gco:DateTime ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='revision']/cit:date/gco:DateTime ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='publication']/cit:date/gco:DateTime |
| Resource Contact | The organization or person responsible for answering questions about the resource. | DIF /dif:DIF/dif:Personnel[dif:Role='INVESTIGATOR'] ECHO /*/echo:Contacts/echo:Contact ECS /CollectionMetaDataFile/CollectionMetaDataSets/Collections/CollectionMetaData/Contact[Role='User Services'] DCAT dct:contactPoint ISO /*/gmd:identificationInfo/*/gmd:pointOfContact ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:pointOfContact |
| Author / Originator World Wide Web Address | The World Wide Web mail address of the principal author of the cited resource | ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode = 'author']/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/gmd:linkage/gmd:URL ISO-1 //cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility[cit:Role/cit:CI_RoleCode='publisher']/cit:party/cit:CI_Organisation/cit:contactInfo/cit:CI_Contact/cit:onlineResource/cit:CI_OnlineResource/cit:linkage |
| Author / Originator Email Address | The electronic mail address of the principal author of the resource | DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Creator DCAT dct:mbox ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode = 'author']/gmd:contactInfo/gmd:CI_Contact/gmd:address/gmd:CI_Address/gmd:electronicMailAddress/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility/cit:party/cit:CI_Individual/cit:contactInfo/cit:CI_Contact/cit:address/cit:CI_Address/cit:electronicMailAddress/gco:CharacterString |
| Originating Organization | The organization responsible for creating the resource | DIF /dif:DIF/dif:Originating_Center ECHO /*/echo:ProcessingCenter FGDC /fgdc:metadata/fgdc:distinfo/fgdc:distrib/fgdc:cntinfo/fgdc:cntperp/fgdc:cntorg FGDC /fgdc:metadata/fgdc:idinfo/fgdc:citation/fgdc:citeinfo/fgdc:origin ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode='author']/gmd:organisationName/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility[cit:role/cit:CI_RoleCode='author']/cit:party/cit:CI_Organisation/cit:name/gco:CharacterString |
| 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 ECHO /*/echo:Campaigns/echo:Campaign/echo:ShortName and /*/echo:Campaigns/echo:Campaign/echo:LongName ISO /*/gmd:identificationInfo/*/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/gmd:CI_Citation/gmd:title/gco:CharacterString DS_AssociationTypeCode="largerWorkCitation" and DS_InitiativeTypeCode="project" ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gco:CharacterString with gmd:MD_KeywordTypeCode="project" ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:associatedResource/mri:MD_AssociatedResource[mri:initiativeType/mri:DS_InitiativeTypeCode='project']/mri:name/cit:CI_Citation/cit:title/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode='project']/mri:keyword/gco:CharacterString |
| Processing Level | A code that indicates the extent of processing done in the creation of a dataset. | ECHO /*/echo:ProcessingLevelId ECS /*/ecs:ProcessingLevelId ISO /*/gmd:contentInfo/gmd:MD_ImageDescription/gmd:processingLevelCode/gmd:MD_Identifier/gmd:code/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:processingLevel/mcc:MD_Identifier/mcc:code/gco:CharacterString |
| Acknowledgement | Provides a place to acknowledge various types of support for the project that produced the data. | ISO /*/gmd:identificationInfo/*/gmd:credit/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:credit/gco:CharacterString> |
| Bounding Box | A bounding box for identifying a geographic area of interest Note: This concept is called "Coverage" in the CSW Specification | DIF /dif:DIF/dif:Spatial_Coverage ECHO /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle ECS /*/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle FGDC /fgdc:metadata/fgdc:idinfo/fgdc:spdom/fgdc:bounding ISO /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox ISO /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox |
| Southernmost Latitude | The southernmost latitude of the bounding rectangle. Note: OGC-SOS offering lists may not include the entire dataset. A gml:id attribute can be used to identify the bounding offering. | DIF (1) /dif:DIF/dif:Spatial_Coverage/dif:Southernmost_Latitude ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle/echo:SouthBoundingCoordinate ECS (1) /*/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle/ecs:SouthBoundingCoordinate DCAT dct:spatial FGDC (1) /fgdc:metadata/fgdc:idinfo/fgdc:spdom/fgdc:bounding/fgdc:southbc ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:southBoundLatitude/gco:Decimal ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox/gex:southBoundLatitude/gco:Decimal |
| Northernmost Latitude | The northernmost latitude of the bounding rectangle. Note: OGC-SOS offering lists may not include the entire dataset. A gml:id attribute (e.g. gml:id="network-all") can be used to identify the bounding offering. | DIF (1) /dif:DIF/dif:Spatial_Coverage/dif:Northernmost_Latitude ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle/echo:NorthBoundingCoordinate ECS (1) /*/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle/ecs:NorthBoundingCoordinate DCAT dct:spatial FGDC (1) /fgdc:metadata/fgdc:idinfo/fgdc:spdom/fgdc:bounding/fgdc:northbc ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:northBoundLatitude/gco:Decimal ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox/gex:northBoundLatitude/gco:Decimal |
| Westernmost Longitude | The westernmost longitude of the bounding rectangle. Note: OGC-SOS offering lists may not include the entire dataset. A gml:id attribute can be used to identify the bounding offering. | DIF (1) /dif:DIF/dif:Spatial_Coverage/dif:Westernmost_Longitude ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle/echo:WestBoundingCoordinate ECS (1) /*/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle/ecs:WestBoundingCoordinate DCAT dct:spatial FGDC (1) /fgdc:metadata/fgdc:idinfo/fgdc:spdom/fgdc:bounding/fgdc:westbc ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:westBoundLongitude/gco:Decimal ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox/gex:westBoundLongitude/gco:Decimal |
| Easternmost Longitude | The easternmost longitude of the bounding rectangle. Note: OGC-SOS offering lists may not include the entire dataset. A gml:id attribute can be used to identify the bounding offering. | DIF (1) /dif:DIF/dif:Spatial_Coverage/dif:Easternmost_Longitude ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle/echo:WestBoundingCoordinate ECS (1) /*/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle/ecs:EastBoundingCoordinate DCAT dct:spatial FGDC (1) /fgdc:metadata/fgdc:idinfo/fgdc:spdom/fgdc:bounding/fgdc:eastbc ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:eastBoundLongitude/gco:Decimal ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox/gex:eastBoundLongitude/gco:Decimal |
| Start Time | The start of the bounding time period | DIF /dif:DIF/dif:Temporal_Coverage/dif:Start_Date ECHO /*/echo:Temporal/echo:RangeDateTime/echo:BeginningDateTime ECS /*/ecs:Temporal/ecs:RangeDateTime/ecs:RangeEndingDate ECS /*/ecs:Temporal/ecs:RangeDateTime/ecs:RangeEndingTime DCAT dct:temporal ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent/gmd:extent/gml:TimePeriod/gml:beginPosition ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:temporalElement/gex:EX_TemporalExtent/gex:extent/gml:TimePeriod/gml:begin/gml:TimeInstant/gml:timePosition ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:temporalElement/gex:EX_TemporalExtent/gex:extent/gml:TimePeriod/gml:beginPosition |
| End Time | The end of the bounding time period | DIF /dif:DIF/dif:Temporal_Coverage/dif:Stop_Date ECHO /*/echo:Temporal/echo:RangeDateTime/echo:EndingDateTime ECHO /*/echo:Temporal/echo:EndsAtPresentFlag ECS /*/ecs:Temporal/ecs:RangeDateTime/ecs:RangeEndingDate ECS /*/ecs:Temporal/ecs:RangeDateTime/ecs:RangeEndingTime DCAT dct:temporal ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent/gmd:extent/gml:TimePeriod/gml:endPosition ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:temporalElement/gex:EX_TemporalExtent/gex:extent/gml:TimePeriod/gml:end/gml:TimeInstant/gml:timePosition ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:temporalElement/gex:EX_TemporalExtent/gex:extent/gml:TimePeriod/gml:endPosition |
| Vertical Minimum | The minimum height of the bounding rectangle | DIF /dif:DIF/dif:Spatial_Coverage/dif:Minimum_Altitude DIF /dif:DIF/dif:Spatial_Coverage/dif:Minimum_Depth ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:verticalElement/gmd:EX_VerticalExtent/gmd:minimumValue/gco:Real ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:verticalElement/gex:EX_VerticalExtent/gex:minimumValue/gco:Real |
| Temporal Extent | The temporal extent of the resource | DIF /dif:Temporal Coverage ECHO /*/Temporal/RangeDateTime ECS /ecs:RangeBeginningDate ECS /ecs:RangeEndingDate FGDC /fgdc:metadata/fgdc:idinfo/fgdc:timeperd/fgdc:timeinfo/fgdc:rngdates ISO /*/gmd:MD_DataIdentification/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 |
| Temporal Resolution | The smallest time step included in the resource. | ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:temporalResolution/gts:TM_PeriodDuration |
| Standard Name Vocabulary | The name of the shared vocabulary from which variable standard names are taken. | ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:thesaurusName/gmd:CI_Citation/gmd:title/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:thesaurusName/cit:CI_Citation/cit:title/gco:CharacterString |
| Vertical Maximum | The maximum height of the bounding rectangle | DIF /dif:DIF/dif:Spatial_Coverage/dif:Maximum_Altitude DIF /dif:DIF/dif:Spatial_Coverage/dif:Maximum_Depth ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:verticalElement/gmd:EX_VerticalExtent/gmd:maximumValue/gco:Real ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:verticalElement/gex:EX_VerticalExtent/gex:maximumValue/gco:Real |
| 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 ECHO /*/echo:RestrictionFlag ECHO /*/echo:RestrictionComment ECHO /*/echo:Visible ECS /*/ecs:AccessConstraints DCAT /dct:accessLevel 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 |
Attribute Convention for Data Discovery - Suggested
These attributes are suggested by the Attribute Convention for Data Discovery
Source: ACDD Home Page
| Concept | Description | Dialect (Fit) Paths |
|---|---|---|
| Contributor Name | Contributor to the resource | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode = 'manyOptions']/gmd:CI_Individual/gmd:name/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility[cit:role/cit:CI_RoleCode='manyOptions']/cit:party/cit:CI_Individual/cit:name/gco:CharacterString |
| Contributor Role | The role of any individuals or institutions that contributed to the creation of the data. | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:role/gmd:CI_RoleCode ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility/cit:role/cit:CI_RoleCode |
| Publisher | Publisher of the cited resource | DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Publisher DIF /dif:DIF/dif:Reference/dif:Publisher DCAT dct:publisher ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode = 'publisher']/gmd:CI_Organisation/gmd:name/gco:CharacterString ISO-1 //cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility[cit:role/cit:CI_RoleCode='publisher']/cit:party/cit:CI_Organisation/cit:name/gco:CharacterString |
| Publisher URL | World Wide Web address associated with the publisher of the cited resource | DIF /dif:DIF/dif:Reference/dif:Publication_Place ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode = ['publisher']/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/gmd:linkage/gmd:URL ISO-1 //cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility[cit:role/cit:CI_RoleCode = ['publisher']/cit:party/*/cit:contactInfo/cit:CI_Contact/cit:onlineResource/cit:CI_OnlineResource/cit:linkage/gco:CharacterString |
| Publisher E-Mail | Email associated with the publisher of the cited resource | DIF /dif:DIF/dif:Reference/dif:Publication_Place ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode = ['publisher']/gmd:contactInfo/gmd:address/gmd:CI_Address/gmd:electronicMailAddress/gco:CharacterString ISO-1 //cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility[cit:role/cit:CI_RoleCode = ['publisher']/cit:party/*/cit:contactInfo/cit:CI_Contact/cit:address/cit:CI_Address/cit:electronicMailAddress/gco:CharacterString |
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.
