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==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.
<table width="95%" border="1" cellpadding="3" cellspacing="3" style="border-collapse: collapse;"><tr><th width="15%">Concept</th><th width="25%">Description</th><th width="60%">Dialect (Fit) Paths</th></tr><tr><td id="Theme_Keyword">Theme Keyword</td><td>A word or phrase that describes some aspect of a resource. Can be one of several types.<br><br><i>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.</i></td><td style="word-break:break-all;"><b>ISO</b> (1)  /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[gmd:type/gmd:MD_KeywordTypeCode='theme']/gmd:keyword/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode='theme']/mri:keyword/gco:CharacterString<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:CategoryKeyword<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TopicKeyword<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TermKeyword<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel1Keyword/echo:Value<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel2Keyword/echo:Value<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel3Keyword<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:DetailedVariableKeyword<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Category<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Topic<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Term<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Variable_Level_1<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Variable_Level_2<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Variable_Level_3<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Detailed_Variable<br></td></tr><tr><td id="Resource_Title">Resource Title</td><td>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.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:title/gco:CharacterString<br><b>ECHO</b> /*/echo:ShortName&gt;/*/echo:LongName<br><b>DIF</b> /dif:DIF/dif:Entry_Title<br><b>DIF</b> /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Title<br></td></tr><tr><td id="Abstract">Abstract</td><td>A paragraph describing the resource.<br><br><i>Note: This concept is called "Desciption" in Catalog Services for the Web.</i></td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:abstract/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:abstract/gco:CharacterString<br><b>ECHO</b> /*/echo:Description<br><b>DIF</b> /dif:DIF/dif:Summary/dif:Abstract<br></td></tr><tr><td id="Resource_Format">Resource Format</td><td>The physical or digital manifestation of the resource</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorFormat/gmd:MD_Format/gmd:name/gco:CharacterString<br><b>ISO</b> /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributionFormat/gmd:MD_Format/gmd:name/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributionFormat/mrd:MD_Format<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributor/mrd:MD_Distributor/mrd:distributorFormat/mrd:MD_Format<br><b>ECHO</b> /*/echo:DataFormat<br><b>DIF</b> /dif:DIF/dif:Distribution/dif:Distribution_Format<br></td></tr><tr><td id="Metadata_Identifier">Metadata Identifier</td><td>A phrase or string which uniquely identifies the metadata file/record.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:fileIdentifier/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:metadataIdentifier/mcc:MD_Identifier<br><b>DIF</b> /dif:DIF/dif:Entry_ID<br></td></tr><tr><td id="Modified_Date">Modified Date</td><td>Date on which the record was created or updated within the catalogue</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:dateStamp/gco:Date<br><b>ISO</b> /*/gmd:dateStamp/gco:DateTime<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:dateInfo/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode="lastUpdate"]/cit:date/gco:DateTime<br><b>ECHO</b> /*/echo:LastUpdate<br><b>DIF</b> /dif:DIF/dif:Last_DIF_Revision_Date<br></td></tr><tr><td id="Resource_Type">Resource Type</td><td>A resource code identifying the type of resource; e.g. dataset, a collection, an application (See MD_ScopeCode) for which the metadata describes.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:hierarchyLevel/gmd:MD_ScopeCode<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:metadataScope/mdb:MD_MetadataScope/mdb:resourceScope/mcc:MD_ScopeCode<br></td></tr><tr><td id="Bounding_Box">Bounding Box</td><td>A bounding box for identifying a geographic area of interest<br><br><i>Note: This concept is called "Coverage" in the CSW Specification</i></td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox<br><b>ISO</b> /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox<br><b>ECHO</b> /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle<br><b>DIF</b> /dif:DIF/dif:Spatial_Coverage<br></td></tr><tr><td id="Coordinate_Reference_System_(CRS)">Coordinate Reference System (CRS)</td><td>Geographic Coordinate Reference System (Authority and ID) for the BoundingBox</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:referenceSystemInfo/gmd:MD_ReferenceSystem/gmd:referenceSystemIdentifier/gmd:RS_Identifier/gmd:code<br><b>ISO</b> /*/gmd:referenceSystemInfo/gmd:MD_ReferenceSystem/gmd:referenceSystemIdentifier/gmd:RS_Identifier/gmd:codeSpace<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:referenceSystemInfo/mrs:MD_ReferenceSystem/mrs:referenceSystemIdentifier/mcc:MD_Identifier/mcc:code/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:referenceSystemInfo/mrs:MD_ReferenceSystem/mrs:referenceSystemIdentifier/mcc:MD_Identifier/mcc:codeSpace/gco:CharacterString<br><b>ECHO</b> /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:CoordinateSystem<br></td></tr><tr><td id="Association">Association</td><td>Complete statement of a one-to-one relationship</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:aggregationInfo/gmd:MD_AggregateInformation<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:associatedResource/mri:MD_AssociatedResource<br><b>ECHO</b> /*/echo:AssociatedDIFs<br></td></tr></table><br/>
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.

==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 in any compliant implementation. Profiles
of CSW map these queryables to concepts and xPaths for particular metadata dialects.
<table width="95%" border="1" cellpadding="3" cellspacing="3" style="border-collapse: collapse;"><tr><th width="15%">Concept</th><th width="25%">Description</th><th width="60%">Dialect (Fit) Paths</th></tr><tr><td id="Resource_Title">Resource Title</td><td>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.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:title/gco:CharacterString<br><b>ECHO</b> /*/echo:ShortName&gt;/*/echo:LongName<br><b>DIF</b> /dif:DIF/dif:Entry_Title<br><b>DIF</b> /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Title<br></td></tr><tr><td id="Author_/_Originator">Author / Originator</td><td>The principal author of the resource<br><br><i>Note: In CSW this concept is called Creator</i></td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode='author']<br><b>ISO</b> /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode= 'originator']<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility[cit:role/cit:CI_RoleCode='author']<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:citedResponsibleParty/cit:CI_Responsibility[cit:role/cit:CI_RoleCode='originator']<br><b>ECHO</b> /echo:Contacts/echo:Contact[Role='Data Originator']<br><b>DIF</b> /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Creator<br></td></tr><tr><td id="Theme_Keyword">Theme Keyword</td><td>A word or phrase that describes some aspect of a resource. Can be one of several types.<br><br><i>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.</i></td><td style="word-break:break-all;"><b>ISO</b> (1)  /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[gmd:type/gmd:MD_KeywordTypeCode='theme']/gmd:keyword/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode='theme']/mri:keyword/gco:CharacterString<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:CategoryKeyword<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TopicKeyword<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TermKeyword<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel1Keyword/echo:Value<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel2Keyword/echo:Value<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel3Keyword<br><b>ECHO</b> (1)  /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:DetailedVariableKeyword<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Category<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Topic<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Term<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Variable_Level_1<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Variable_Level_2<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Variable_Level_3<br><b>DIF</b> (1)  /dif:DIF/dif:Parameters/dif:Detailed_Variable<br></td></tr><tr><td id="Abstract">Abstract</td><td>A paragraph describing the resource.<br><br><i>Note: This concept is called "Desciption" in Catalog Services for the Web.</i></td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:abstract/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:abstract/gco:CharacterString<br><b>ECHO</b> /*/echo:Description<br><b>DIF</b> /dif:DIF/dif:Summary/dif:Abstract<br></td></tr><tr><td id="Publisher">Publisher</td><td>Publisher of the cited resource</td><td style="word-break:break-all;"><b>ISO</b> //gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode='publisher']/gmd:organisationName/gco:CharacterString<br><b>ISO-1</b> //cit:CI_Responsibility[cit:role/cit:CI_RoleCode='publisher']/cit:party/cit:CI_Organisation/cit:name/gco:CharacterString<br><b>DIF</b> /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Publisher<br><b>DIF</b> /dif:DIF/dif:Reference/dif:Publisher<br></td></tr><tr><td id="Contributor_Name">Contributor Name</td><td>Contributor to the resource</td><td style="word-break:break-all;"><b>ISO</b> /*/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<br><b>ISO-1</b> /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<br></td></tr><tr><td id="Modified_Date">Modified Date</td><td>Date on which the record was created or updated within the catalogue</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:dateStamp/gco:Date<br><b>ISO</b> /*/gmd:dateStamp/gco:DateTime<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:dateInfo/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode="lastUpdate"]/cit:date/gco:DateTime<br><b>ECHO</b> /*/echo:LastUpdate<br><b>DIF</b> /dif:DIF/dif:Last_DIF_Revision_Date<br></td></tr><tr><td id="Resource_Type">Resource Type</td><td>A resource code identifying the type of resource; e.g. dataset, a collection, an application (See MD_ScopeCode) for which the metadata describes.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:hierarchyLevel/gmd:MD_ScopeCode<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:metadataScope/mdb:MD_MetadataScope/mdb:resourceScope/mcc:MD_ScopeCode<br></td></tr><tr><td id="Resource_Format">Resource Format</td><td>The physical or digital manifestation of the resource</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorFormat/gmd:MD_Format/gmd:name/gco:CharacterString<br><b>ISO</b> /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributionFormat/gmd:MD_Format/gmd:name/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributionFormat/mrd:MD_Format<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributor/mrd:MD_Distributor/mrd:distributorFormat/mrd:MD_Format<br><b>ECHO</b> /*/echo:DataFormat<br><b>DIF</b> /dif:DIF/dif:Distribution/dif:Distribution_Format<br></td></tr><tr><td id="Metadata_Identifier">Metadata Identifier</td><td>A phrase or string which uniquely identifies the metadata file/record.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:fileIdentifier/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:metadataIdentifier/mcc:MD_Identifier<br><b>DIF</b> /dif:DIF/dif:Entry_ID<br></td></tr><tr><td id="Source_Citation">Source Citation</td><td>Reference to the processing input source.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:lineage/gmd:LI_Lineage/gmd:source/gmd:LI_Source/gmd:sourceCitation/gmd:CI_Citation<br><b>ISO</b> /*/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:lineage/gmd:LI_Lineage/gmd:processStep/gmd:LI_ProcessStep/gmd:source/gmd:LI_Source/gmd:sourceCitation/gmd:CI_Citation<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:resourceLineage/mrl:LI_Lineage/mrl:source/mrl:LE_Source/mrl:sourceCitation/cit:CI_Citation<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:resourceLineage/mrl:LI_Lineage/mrl:processStep/mrl:LE_ProcessStep/mrl:source/mrl:LE_Source/mrl:sourceCitation/cit:CI_Citation<br></td></tr><tr><td id="Metadata_Language">Metadata Language</td><td>Language of the metadata</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:language/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:defaultLocale/lan:PT_Locale/lan:language/lan:LanguageCode<br></td></tr><tr><td id="Related_Resource_Citation">Related Resource Citation</td><td>Citation information about the associated resource.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/gmd:CI_Citation<br><b>ISO</b> /*/gmd:identificationInfo/srv:SV_ServiceIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/gmd:CI_Citation<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:associatedResource/mri:MD_AssociatedResource/mri:name/cit:CI_Citation<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/srv:SV_ServiceIdentification/mri:associatedResource/mri:MD_AssociatedResource/mri:name/cit:CI_Citation<br></td></tr><tr><td id="Bounding_Box">Bounding Box</td><td>A bounding box for identifying a geographic area of interest<br><br><i>Note: This concept is called "Coverage" in the CSW Specification</i></td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox<br><b>ISO</b> /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox<br><b>ECHO</b> /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle<br><b>DIF</b> /dif:DIF/dif:Spatial_Coverage<br></td></tr><tr><td id="Rights">Rights</td><td>Information about rights held in and over the resource</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:resourceConstraints/gmd:MD_LegalConstraints<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_LegalConstraints<br></td></tr></table><br/>
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.

==Catalog Service for the Web (CSW) Additional Queryable Properties==
Additional queryable properties defined in the ISO Profile of CSW (Table 10)
<table width="95%" border="1" cellpadding="3" cellspacing="3" style="border-collapse: collapse;"><tr><th width="15%">Concept</th><th width="25%">Description</th><th width="60%">Dialect (Fit) Paths</th></tr><tr><td id="Revision_Date">Revision Date</td><td>Date of revision of the cited resource</td><td style="word-break:break-all;"><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='revision']/gmd:date/gco:Date<br><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='revision']/gmd:date/gco:DateTime<br><b>ISO-1</b> //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='revision']/cit:date/gco:Date<br><b>ISO-1</b> //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='revision']/cit:date/gco:DateTime<br></td></tr><tr><td id="Resource_Creation/Revision_Date">Resource Creation/Revision Date</td><td>The date the resource was created</td><td style="word-break:break-all;"><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='creation']/gmd:date/gco:Date<br><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='creation']/gmd:date/gco:DateTime<br><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='revision']/gmd:date/gco:Date<br><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='revision']/gmd:date/gco:DateTime<br><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='publication']/gmd:date/gco:Date<br><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='publication']/gmd:date/gco:DateTime<br><b>ISO-1</b> //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='creation']/cit:date/gco:DateTime<br><b>ISO-1</b> //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='revision']/cit:date/gco:DateTime<br><b>ISO-1</b> //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='publication']/cit:date/gco:DateTime<br><b>ECHO</b> /*/echo:InsertTime<br><b>ECHO</b> /*/echo:LastUpdate<br><b>DIF</b> /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Release_Date<br></td></tr><tr><td id="Publication_Date">Publication Date</td><td>Date of publication of the cited resource</td><td style="word-break:break-all;"><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='publication']/gmd:date/gco:Date<br><b>ISO</b> //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='publication']/gmd:date/gco:DateTime<br><b>ISO-1</b> //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='publication']/cit:date/gco:DateTime<br><b>ECHO</b> /*/echo:InsertTime<br><b>DIF</b> /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Release_Date<br><b>DIF</b> /dif:DIF/dif:Reference/dif:Publication_Date<br></td></tr><tr><td id="Organization_Name">Organization Name</td><td>Name of the organization</td><td style="word-break:break-all;"><b>ISO</b> (1)  //gmd:CI_ResponsibleParty/gmd:organisationName/gco:CharacterString<br><b>ISO-1</b> (1)  //cit:CI_Responsibility/cit:party/cit:CI_Organisation/cit:name/gco:CharacterString<br><b>ECHO</b> (1)  /*/echo:Contacts/echo:Contact/echo:OrganizationName<br><b>DIF</b> (1)  /dif:DIF/dif:Data_Center/dif:Data_Center_Name/dif:Short_Name<br><b>DIF</b> (1)  /dif:DIF/dif:Data_Center/dif:Data_Center_Name/dif:Long_Name<br></td></tr><tr><td id="Security_Constraints">Security Constraints</td><td>Handling restrictions imposed on the resource or metadata for national security or similar security concerns.</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo//*/gmd:resourceConstraints/gmd:MD_SecurityConstraints<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_SecurityConstraints<br><b>DIF</b> /dif:DIF/dif:Access_Constraints<br><b>DIF</b> /dif:DIF/dif:Use_Constraints<br></td></tr><tr><td id="Metadata_Language">Metadata Language</td><td>Language of the metadata</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:language/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:defaultLocale/lan:PT_Locale/lan:language/lan:LanguageCode<br></td></tr><tr><td id="Resource_Identifier">Resource Identifier</td><td>Identifier for the resource described by the metadata</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:identifier/mcc:MD_Identifier/mcc:code/gco:CharacterString<br><b>ECHO</b> /*/echo:DataSetId<br><b>ECHO</b> (1)  /*/echo:ShortName | /*/echo:LongName<br><b>DIF</b> /dif:DIF/dif:Data_Set_Citation/dif:Dataset_DOI<br></td></tr><tr><td id="Parent_Identifier">Parent Identifier</td><td>A unique identifier for a parent dataset or collection</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:associatedResource/mri:MD_AssociatedResource/mri:name/cit:CI_Citation/cit:identifier/mcc:MD_Identifier/mcc:code/gco:CharacterString<br><b>DIF</b> /dif:DIF/dif:Parent_DIF<br></td></tr><tr><td id="Keyword_Type">Keyword Type</td><td>Methods used to group similar keywords</td><td style="word-break:break-all;"><b>ISO</b> /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:type/gmd:MD_KeywordTypeCode<br><b>ISO-1</b> /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords/mri:type/mri:MD_KeywordTypeCode<br></td></tr></table>
''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.


[[Metadata Implementation]]