Data Discovery (CSW)
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Catalogue Services for the Web (CSW) is an Open Geospatial Consortium (OGC) standard for supporting the ability to publish and search collections of descriptive information (metadata) for data, services, and related information objects. CSW defines Core Queryables, Core Returnables, and Other Queryables that cab be supported in any compliant implementation. Profiles of CSW map these fields to concepts and xPaths for particular metadata dialects.
Catalog Services for the Web (CSW) Core Queryables
The Open Geospatial Consortium Catalog Services for the Web (CSW) standard defines eleven "Core Queryables" that must be supported in any compliant implementation. Profiles of CSW map these queryables to concepts and xPaths for particular metadata dialects.
| Concept | Description | Dialect (Fit) Paths |
|---|---|---|
| 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. |
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:MD_DataIdentification/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode='theme']/mri:keyword/gco:CharacterString 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:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:DisciplineTopicParameters/ecs:DisciplineKeyword ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:DisciplineTopicParameters/ecs:TopicKeyword ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:DisciplineTopicParameters/ecs:TermKeyword ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:DisciplineTopicParameters/ecs:VariableKeyword 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 SERF /serf:SERF/serf:Keyword |
| 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. | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString ISO-1 /*/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:title/gco:CharacterString ECHO /*/echo:ShortName>/*/echo:LongName ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:ShortName> /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:LongName DIF /dif:DIF/dif:Entry_Title DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Title |
| Abstract | A paragraph describing the resource. Note: This concept is called "Desciption" in Catalog Services for the Web. |
ISO /*/gmd:identificationInfo/*/gmd:abstract/gco:CharacterString ISO-1 /*/mdb:identificationInfo/*/rmd:abstract/gco:CharacterString ECHO /*/echo:Description ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:CollectionDescription DIF /dif:DIF/dif:Summary/dif:Abstract SERF /serf:SERF/serf:Summary/serf:Abstract |
| Any Text | A target for full-text search of character data types in a catalogue | ISO //text() |
| Resource Format | The physical or digital manifestation of the resource | ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorFormat/gmd:MD_Format/gmd:name/gco:CharacterString ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributionFormat/gmd:MD_Format/gmd:name/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:resourceConstraints/mco:MD_LegalConstraints ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributionFormat/mrd:MD_Format ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributor/mrd:MD_Distributor/mrd:distributorFormat/mrd:MD_Format ECHO /*/echo:DataFormat DIF /dif:DIF/dif:Distribution/dif:Distribution_Format SERF /serf:SERF/serf:Distribution/serf:Distribution_Format |
| Metadata Identifier | A phrase or string which uniquely identifies the metadata file/record. | ISO /*/gmd:fileIdentifier/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:metadataIdentifier/mcc:MD_Identifier DIF /dif:DIF/dif:Entry_Id SERF /serf:SERF/serf:Entry_ID |
| Modified Date | Date on which the record was created or updated within the catalogue | 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 DIF /dif:DIF/dif:DIF_Creation_Date |
| Type | The nature or genre of the content of the resource. Type can include general categories, genres or aggregation levels of content. | ISO /*/gmd:hierarchyLevel/gmd:MD_ScopeCode ISO-1 /mdb:MD_Metadata/mdb:metadataScope/mdb:MD_MetadataScope/mdb:resourceScope/mcc:MD_ScopeCode |
| Bounding Box | A bounding box for identifying a geographic area of interest Note: This concept is called "Coverage" in the CSW Specification |
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:MD_DataIdentification/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox ECHO /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle DIF /dif:DIF/dif:Spatial_Coverage |
| Coordinate Reference System (CRS) | Geographic Coordinate Reference System (Authority and ID) for the BoundingBox | ISO /*/gmd:referenceSystemInfo/gmd:MD_ReferenceSystem/gmd:referenceSystemIdentifier/gmd:RS_Identifier/gmd:code ISO /*/gmd:referenceSystemInfo/gmd:MD_ReferenceSystem/gmd:referenceSystemIdentifier/gmd:RS_Identifier/gmd:codeSpace ISO /*/gmd:referenceSystemInfo/gmd:MD_ReferenceSystem/gmd:referenceSystemIdentifier/gmd:RS_Identifier/gmd:version |
| Association | Complete statement of a one-to-one relationship | ISO /*/gmd:identificationInfo/*/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetIdentifier/gmd:MD_Identifier/gmd:code/gco:CharacterString ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:CollectionAssociation |
Catalog Services for the Web (CSW) Core Returnable Properties
The Open Geospatial Consortium Catalog Services for the Web (CSW) standard defines eleven "Core Queryables" that must be supported for any compliant implementation. Profiles of CSW map these queryables to concepts and xPaths for particular metadata dialects.
| 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. | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString ISO-1 /*/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:title/gco:CharacterString ECHO /*/echo:ShortName>/*/echo:LongName ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:ShortName> /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:LongName DIF /dif:DIF/dif:Entry_Title DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Title |
| Creator | Creator of the resource | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode= 'author'] ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode= 'originator'] DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Creator |
| Abstract | A paragraph describing the resource. Note: This concept is called "Desciption" in Catalog Services for the Web. |
ISO /*/gmd:identificationInfo/*/gmd:abstract/gco:CharacterString ISO-1 /*/mdb:identificationInfo/*/rmd:abstract/gco:CharacterString ECHO /*/echo:Description ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:CollectionDescription DIF /dif:DIF/dif:Summary/dif:Abstract SERF /serf:SERF/serf:Summary/serf:Abstract |
| Publisher | Publisher of the cited resource | ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode= 'publisher'] 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 DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Publisher DIF /dif:DIF/dif:Reference/dif:Publisher |
| Contributor Name | Contributor to the resource | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode= 'author'] ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode= 'originator'] |
| Date | The date of a creation or update event of the catalogue record. | ISO /*/gmd:dateStamp/gco:Date ISO /*/gmd:dateStamp/gco:DateTime DIF /dif:DIF/dif:DIF_Creation_Date |
| Type | The nature or genre of the content of the resource. Type can include general categories,genres or aggregation levels of content. | ISO /*/gmd:hierarchyLevel/gmd:MD_ScopeCode ISO-1 /mdb:MD_Metadata/mdb:metadataScope/mdb:MD_MetadataScope/mdb:resourceScope/mcc:MD_ScopeCode |
| Resource Format | The physical or digital manifestation of the resource | ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorFormat/gmd:MD_Format/gmd:name/gco:CharacterString ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributionFormat/gmd:MD_Format/gmd:name/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:resourceConstraints/mco:MD_LegalConstraints ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributionFormat/mrd:MD_Format ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributor/mrd:MD_Distributor/mrd:distributorFormat/mrd:MD_Format ECHO /*/echo:DataFormat DIF /dif:DIF/dif:Distribution/dif:Distribution_Format SERF /serf:SERF/serf:Distribution/serf:Distribution_Format |
| Metadata Identifier | A phrase or string which uniquely identifies the metadata file/record. | ISO /*/gmd:fileIdentifier/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:metadataIdentifier/mcc:MD_Identifier DIF /dif:DIF/dif:Entry_Id SERF /serf:SERF/serf:Entry_ID |
| Source | A reference to a resource from which the present resource is derived. | ISO /*/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:lineage/gmd:LI_Lineage/gmd:source/* ISO-1 /mdb:MD_Metadata/mdb:resourceLineage/mrl:LI_Lineage/mrl:source/mrl:LI_Source |
| Metadata Language | Language of the metadata | ISO /*/gmd:language/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:defaultLocale/lan:PT_Locale/lan:language/lan:LanguageCode |
| Relation | A reference to a related resource. | ISO /*/gmd:identificationInfo/*/gmd:aggregationInfo/gmd:MD_AggregateInformation |
| Bounding Box | A bounding box for identifying a geographic area of interest Note: This concept is called "Coverage" in the CSW Specification |
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:MD_DataIdentification/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox ECHO /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle DIF /dif:DIF/dif:Spatial_Coverage |
| Rights | Information about rights held in and over the resource | ISO /*/gmd:identificationInfo/*/gmd:resourceConstraints/gmd:MD_LegalConstraints ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:resourceConstraints/mco:MD_LegalConstraints |
Catalog Service for the Web (CSW) Additional Queryable Properties
Additional queryable properties defined in the ISO Profile of CSW (Table 10)
| Concept | Description | Dialect (Fit) Paths |
|---|---|---|
| Revision Date | Date of revision of the cited resource | 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-1 //cit:CI_Citation/cit:date/cit:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='revision']/cit:date/gco:Date ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='revision']/cit:date/gco:DateTime |
| Publication Date | Date of publication of the cited resource | 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[gmd:dateType/gmd:CI_DateTypeCode='publication']/cit:date/gco:Date DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Release_Date DIF /dif:DIF/dif:Reference/dif:Publication_Date |
| Organization Name | Name of the organization | ISO (1) //gmd:CI_ResponsibleParty/gmd:organisationName/gco:CharacterString ISO-1 (1) //cit:CI_Responsibility/cit:party/cit:CI_Organisation/cit:name/gco:CharacterString ECHO (1) /*/echo:Contacts/echo:Contact/echo:OrganizationName ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Contact/ecs:ContactOrganizationName DIF (1) /dif:DIF/dif:Data_Center/dif:Data_Center_Name/dif:Short_Name DIF (1) /dif:DIF/dif:Data_Center/dif:Data_Center_Name/dif:Long_Name |
| Has Security Constraints | Are there any security constraints? | ISO /*/gmd:identificationInfo//*/gmd:resourceConstraints/gmd:MD_SecurityConstraints ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:resourceConstraints/mco:MD_SecurityConstraints DIF /dif:DIF/dif:Access_Constraints DIF /dif:DIF/dif:Use_Constraints |
| Metadata Language | Language of the metadata | ISO /*/gmd:language/gco:CharacterString ISO-1 /mdb:MD_Metadata/mdb:defaultLocale/lan:PT_Locale/lan:language/lan:LanguageCode |
| Resource Identifier | Identifier for the resource described by the metadata | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString ISO-1 //cit:CI_Citation/cit:identifier/cit:MD_Identifier/cit:code ECHO /*/echo:DataSetId ECHO (1) /*/echo:ShortName | /*/echo:LongName DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_DOI DIF /dif:DIF/dif:Reference/dif:DOI |
| Parent Identifier | A unique identifier for a parent dataset or collection | ISO /*/gmd:parentIdentifier/gco:CharacterString DIF /dif:DIF/dif:Parent_DIF |
| Keyword Type | Methods used to group similar keywords | ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:type/gmd:MD_KeywordTypeCode ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:descriptiveKeywords/mri:MD_Keywords/mri:type/mri:MD_KeywordTypeCode DIF /dif:DIF/dif:Related_URL/dif:URL_Content_Type/dif:Type > /dif:DIF/dif:Related_URL/dif:URL_Content_Type/dif:Subtype |
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.
