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I need to describe, identify and reference related resources |
The ISO AggregateInformation object provides a powerful mechanism for grouping multiple metadata records into sets based on a number of relationships described by the AssociationType and InitiativeTypeCodes. Note that the sets are identified by MD_Identifiers which suggests that they could have metadata records of their own.
Associating resources: Utilize the MD_Identifier, DS_AssociationTypeCode and DS_InitiativeTypeCode object to reference related resources by association and initiative.
ISO 19115 | //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetIdentifier/gmd:MD_Identifier/gmd:code //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:associationType/gmd:DS_AssociationTypeCode //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:initiativeType/gmd:DS_InitiativeTypeCode |
ISO 19115-1 | //mdb:identificationInfo/mri:MD_DataIdentification/mri:associatedResource/mri:MD_AssociatedResource/mri:name/cit:CI_Citation/cit:identifier/mcc:MD_Identifier //mdb:identificationInfo/mri:MD_DataIdentification/mri:associatedResource/mri:MD_AssociatedResource/mri:associationType/mri:DS_AssociationTypeCode //mdb:identificationInfo/mri:MD_DataIdentification/mri:associatedResource/mri:MD_AssociatedResource/mri:initiativeType/mri:DS_InitiativeTypeCode |
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<aggregationInfo> <MD_AggregateInformation> <aggregateDataSetIdentifier> <MD_Identifier> <code> <gco:CharacterString>urn:de.pangaea:project:IODP</gco:CharacterString> </code> </MD_Identifier> </aggregateDataSetIdentifier> <associationType> <DS_AssociationTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode" codeListValue="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode_largerWorkCitation">largerWorkCitation</DS_AssociationTypeCode> </associationType> <initiativeType> <DS_InitiativeTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode" codeListValue="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode_project">project</DS_InitiativeTypeCode> </initiativeType> </MD_AggregateInformation> </aggregationInfo> <aggregationInfo> <MD_AggregateInformation> <aggregateDataSetIdentifier> <MD_Identifier> <code> <gco:CharacterString>urn:org.iodp:exp:302</gco:CharacterString> </code> </MD_Identifier> </aggregateDataSetIdentifier> <associationType> <DS_AssociationTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode" codeListValue="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode_largerWorkCitation">largerWorkCitation</DS_AssociationTypeCode> </associationType> <initiativeType> <DS_InitiativeTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode" codeListValue="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode_campaign">campaign</DS_InitiativeTypeCode> </initiativeType> </MD_AggregateInformation> </aggregationInfo> <aggregationInfo> <MD_AggregateInformation> <aggregateDataSetIdentifier> <MD_Identifier> <code> <gco:CharacterString>urn:org.iodp:exp:302:site:M0001</gco:CharacterString> </code> </MD_Identifier> </aggregateDataSetIdentifier> <associationType> <DS_AssociationTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode" codeListValue="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode_largerWorkCitation">largerWorkCitation</DS_AssociationTypeCode> </associationType> <initiativeType> <DS_InitiativeTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode" codeListValue="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode_study">study</DS_InitiativeTypeCode> </initiativeType> </MD_AggregateInformation> </aggregationInfo> <aggregationInfo> <MD_AggregateInformation> <aggregateDataSetIdentifier> <MD_Identifier> <code> <gco:CharacterString>urn:org.iodp:exp:302:site:M0001:hole:A</gco:CharacterString> </code> </MD_Identifier> </aggregateDataSetIdentifier> <associationType> <DS_AssociationTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode" codeListValue="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode_largerWorkCitation">largerWorkCitation</DS_AssociationTypeCode> </associationType> <initiativeType> <DS_InitiativeTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode" codeListValue="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode_operation">operation</DS_InitiativeTypeCode> </initiativeType> </MD_AggregateInformation> </aggregationInfo>
Many datasets are collected as part of projects or programs. The aggregateInfo object allows you to identify those. They can be identified as largerWorkCitations or crossReferences. This example from a sea surface temperature dataset includes a CI_Citation to the Group for High Resolution Sea Surface Temperature (GHRSST) home page.
<gmd:aggregationInfo> <gmd:MD_AggregateInformation> <gmd:aggregateDataSetName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>Group for High Resolution Sea Surface Temperature</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="inapplicable"/> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty> <gmd:contactInfo> <gmd:CI_Contact> <gmd:onlineResource> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://www.ghrsst-pp.org</gmd:URL> </gmd:linkage> <gmd:name> <gco:CharacterString>Group for High Resolution Sea Surface Temperature Home Page</gco:CharacterString> </gmd:name> <gmd:description> <gco:CharacterString>Group for High Resolution Sea Surface Temperature Home Page</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information"/> </gmd:function> </gmd:CI_OnlineResource> </gmd:onlineResource> </gmd:CI_Contact> </gmd:contactInfo> <gmd:role/> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> </gmd:CI_Citation> </gmd:aggregateDataSetName> <gmd:aggregateDataSetIdentifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>GHRSST > Group for High Resolution Sea Surface Temperature</gco:CharacterString></gmd:code> </gmd:MD_Identifier> </gmd:aggregateDataSetIdentifier> <gmd:associationType> <gmd:DS_AssociationTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode" codeListValue="largerWorkCitation"/> </gmd:associationType> <gmd:initiativeType> <gmd:DS_InitiativeTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode" codeListValue="project"/> </gmd:initiativeType> </gmd:MD_AggregateInformation> </gmd:aggregationInfo>
Usage | Description and Xpath |
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The MD_AggregateInformation object in MD_DataIdentification and SV_ServiceIdentification is used to describe, identify and reference resources related to the dataset. /gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo |