Difference between revisions of "Data Discovery (DCAT)"

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The spiral below is for the Common Core metadata specification based on the Data Catalog Vocabulary (DCAT). Where compatible the spiral provides like xpath references for DIF, ECHO, ECS, SERF, ISO and ISO-1.
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==DCAT for Data Discovery - Mandatory==
 
==DCAT for Data Discovery - Mandatory==
These attributes are mandatory for the common core metadata specification based on the Data Catalog Vocabulary (DCAT). Where compatible the spirals below provide like xpath references for DIF, ECHO, ECS, UMM and ISO.
 
  
 
<table xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:cw="http://www.ngdc.noaa.gov/metadata/published/xsd/crosswalk.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema" width="95%" border="1" cellpadding="3" cellspacing="3" style="border-collapse: collapse;">
 
<table xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:cw="http://www.ngdc.noaa.gov/metadata/published/xsd/crosswalk.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema" width="95%" border="1" cellpadding="3" cellspacing="3" style="border-collapse: collapse;">

Revision as of 17:46, September 22, 2014

The spiral below is for the Common Core metadata specification based on the Data Catalog Vocabulary (DCAT). Where compatible the spiral provides like xpath references for DIF, ECHO, ECS, SERF, ISO and ISO-1.

DCAT for Data Discovery - Mandatory

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
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
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
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
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
Resource Contact The organization or person responsible for answering questions about the resource. ISO /*/gmd:identificationInfo/*/gmd:pointOfContact
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:pointOfContact/cit:CI_Responsibility
ECHO /*/echo:ArchiveCenter
ECHO /*/echo:Contacts/echo:Contact
ECS /CollectionMetaDataFile/CollectionMetaDataSets/Collections/CollectionMetaData/Contact[Role='UserServices']
DIF /dif:DIF/dif:Personnel[dif:Role='INVESTIGATOR']
SERF /serf:SERF/serf:Personnel
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
Resource Contact The organization or person responsible for answering questions about the resource. ISO /*/gmd:identificationInfo/*/gmd:pointOfContact
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:pointOfContact/cit:CI_Responsibility
ECHO /*/echo:ArchiveCenter
ECHO /*/echo:Contacts/echo:Contact
ECS /CollectionMetaDataFile/CollectionMetaDataSets/Collections/CollectionMetaData/Contact[Role='UserServices']
DIF /dif:DIF/dif:Personnel[dif:Role='INVESTIGATOR']
SERF /serf:SERF/serf:Personnel
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. ISO /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:legalConstraints/gmd:MD_RestrictionCode
ISO /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:otherConstraints/gco:CharacterString
ISO /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:restrictions/gmd:MD_LegalConstraints/gmd:legalConstraints/gco:CharacterString
ISO /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:restrictions/gmd:MD_LegalConstraints/gmd:otherConstraints/gco:CharacterString
ECHO /*/echo:RestrictionFlag
ECHO /*/echo:RestrictionComment
ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:AccessConstraints
DIF /dif:DIF/dif:Access_Constraints
SERF /serf:DIF/serf:Access_Constraints

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.