Metadata Resources and Field Mappings under the Project Open Data Metadata Schema (DCAT-US Schema v1.1)
Overview
Provides further background and resources to assist agencies in implementing the Project Open Data Metadata Schema v1.1. Maps fields from the current version of DCAT-US v1.1 to the previous version of the schema (v1.0), as well as other schemas (CKAN API, DCAT, and Schema.org).
Source
Category
Keywords
Details
This section provides further background and resources to assist agencies in implementing the Project Open Data Metadata Schema v1.1.
In addition to template and sample files we also produce Project Open Data Metadata schema in JSON schema format. JSON schema describes a JSON data format. It can be used to automatically validate Data.json files and to generate forms for creating JSON.
Terms and Abbreviations
- POD - Project Open Data
- JSON - JavaScript Object Notation
- DCAT - Data Catalog Vocabulary
- CKAN - CKAN software
- Schema.org - schema.org
- JSON Schema - JSON Schema docs and specification
- JSON-LD - JSON-LD docs and specification
JSON Schema Files
- 1.1 Schema (Draft). The Catalog schema includes by reference the Dataset, Distribution, Organization, and vCard schemas.
JSON-LD Context
- 1.1 Schema (Draft)
Sample Data Files
- JSON - Minimum Requirements
- JSON - With Extended Fields
- CSV - Minimum Requirements (limited to one distribution per dataset)
- CSV - With Extended Fields (limited to one distribution per dataset)
Use Cases
Starting from a spreadsheet
Some agencies may initially build or maintain data catalogs through large spreadsheets. In order to then generate a data.json file from this, simply import the spreadsheet (in the form of a CSV file) into the CSV Converter, translate the metadata as needed, and then generate an appropriately formatted JSON file.
Utilizing CKAN
CKAN is a popular, open-source data catalog that can be installed independently or run as a service. Even if an agency hasn’t begun a data catalog, adopting CKAN can provide a robust and feature-rich solution with which to begin maintaining an internal or external catalog. In addition to providing an effective means of organizing the agency’s data catalog, CKAN provides several opportunities for generating the needed data.json file. See the ckanext-datajson and USMetadata extensions.
Using Socrata
Socrata is a popular, open data catalog that is run as a service. Agencies that have not adapted a data catalog yet, can use Socrata without having to install or setup any servers or software. In addition to providing rich visualizations and data management features, Socrata natively supports data.json so any datasets managed through Socrata will be automatically exposed correctly. Socrata also supports all the extended metadata fields through it’s extensible metadata features.
Manual translating a data file from another system
Agencies may also manage their data catalogs through various database solutions such as Access, an asset management system, document management system, geoportal, or assorted proprietary systems. Regardless of which system an agency employs, it should include a fundamental export option which allows the catalog to be exported as a CSV file, which can then be imported into the CSV Converter for conversation to an appropriately formatted JSON file. Depending on the solutions’ varied further functionality, some of them may also provide APIs which can then be configured to maintain the data.json file. If not, they may instead support XML and JSON exports, which can then be converted to the proper format.
Convert from CSV to JSON
In order to generate appropriately formatted JSON, simply import an appropriately formatted CSV into the CSV Converter, ensure that the metadata fields line up, and re-export the file.
Schema Object Model Diagram
Field Mappings
Catalog Fields
| Label | POD v1.1 | POD v1.0 | CKAN API | DCAT | Schema.org |
|---|---|---|---|---|---|
| Metadata Context | @context | n/a | n/a | n/a | n/a |
| Metadata Catalog ID | @id | n/a | n/a | n/a | n/a |
| Metadata Type | @type | n/a | n/a | n/a | itemtype attribute |
| Schema Version | conformsTo | n/a | n/a | n/a | n/a |
| Schema URL | describedBy | n/a | n/a | n/a | n/a |
| Dataset | dataset | n/a | results | dct:dataset | dataset |
Dataset Fields
Note the mapping for license and rights from Project Open Data to DCAT applies the fields from the Dataset object in Project Open Data to each of the Distribution objects in DCAT.
| Label | POD v1.1 | POD v1.0 | CKAN API | DCAT | Schema.org |
|---|---|---|---|---|---|
| Metadata Type | @type | n/a | n/a | n/a | itemtype attribute |
| Title | title | title | title | dct:title | name |
| Description | description | description | notes | dct:description | description |
| Tags | keyword | keyword | tags | dcat:keyword | keywords |
| Last Update | modified | modified | n/a | dct:modified | dateModified |
| Publisher | publisher → name | publisher | organization → title | dct:publisher → foaf:name | publisher → Organization:name |
| Publisher Parent Organization | publisher → subOrganizationOf | n/a | n/a | dct:publisher → org:subOrganizationOf | publisher → Organization:memberOf |
| Contact Name | contactPoint → fn | contactPoint | maintainer | dcat:contactPoint → vcard:fn | provider → Person:name |
| Contact Email | contactPoint → hasEmail | mbox | maintainer_email | dcat:contactPoint → vcard:hasEmail | provider → Person:email |
| Unique Identifier | identifier | identifier | id | dct:identifier | n/a |
| Public Access Level | accessLevel | accessLevel | n/a | n/a | n/a |
| Bureau Code | bureauCode | bureauCode | n/a | n/a | n/a |
| Program Code | programCode | programCode | n/a | n/a | n/a |
| Distribution | distribution | distribution | resources | dcat:distribution | distribution |
| License | license | license | license_title | dct:license | license |
| Rights | rights | accessLevelComment | n/a | dct:rights | n/a |
| Endpoint | Removed | webService | resources → url | dcat:accessURL | n/a |
| Spatial | spatial | spatial | n/a | dct:spatial | spatial |
| Temporal | temporal | temporal | n/a | dct:temporal | temporal |
| Release Date | issued | issued | n/a | dct:issued | datePublished |
| Frequency | accrualPeriodicity | accrualPeriodicity | n/a | dct:accrualPeriodicity | n/a |
| Language | language | language | n/a | dct:language | inLanguage |
| Data Quality | dataQuality | dataQuality | n/a | n/a | n/a |
| Category | theme | theme | groups | dcat:theme | about |
| Related Documents | references | references | n/a | dct:references | n/a |
| Homepage URL | landingPage | landingPage | n/a | dcat:landingPage | url |
| Collection | isPartOf | n/a | n/a | isPartOf | |
| System of Records | systemOfRecords | systemOfRecords | n/a | n/a | n/a |
| Primary IT Investment | primaryITInvestmentUII | primaryITInvestmentUII | n/a | n/a | |
| Data Dictionary | describedBy | dataDictionary | n/a | n/a | n/a |
| Data Dictionary Type | describedByType | n/a | n/a | n/a | |
| Data Standard | conformsTo | n/a | n/a | n/a |
Dataset Distribution Fields
| Label | POD v1.1 | POD v1.0 | CKAN API | DCAT | Schema.org |
|---|---|---|---|---|---|
| Metadata Type | @type | n/a | n/a | n/a | itemtype attribute |
| Download URL | downloadURL | accessURL | resources → url | dcat:downloadURL | contentUrl |
| Access URL | accessURL | n/a | resources → url | dcat:accessURL | contentUrl |
| Media Type | mediaType | format | resources → mimetype | dcat:mediaType | n/a |
| Format | format | n/a | resources → format | dct:format | encodingFormat |
| Title | title | n/a | resources → name | dct:title | name |
| Description | description | n/a | resources → description | dct:description | description |
| Data Dictionary | describedBy | n/a | n/a | n/a | |
| Data Dictionary Type | describedByType | n/a | n/a | n/a | |
| Data Standard | conformsTo | n/a | n/a | n/a |
Crosswalks for Geospatial Metadata
FGDC member agencies developed these crosswalks as a standardized resource for use by agencies in creating their Project Open Data metadata schema v1.1 (data.json) records. The crosswalks are intended as a reference model for the development of strategies and applications that support the conversion of existing geospatial metadata to the Project Open Data metadata schema v1.1.
The crosswalks will be periodically updated to address user comments and revisions to the source metadata standards. Users are asked to add their own information about strategies, applications, and other products generated using these crosswalks. Problems or suggestions can be submitted by creating a new issue or improvements can be proposed directly following the guidelines for contributing.
Since the Project Open Data Metadata Schema v1.1 is also a JSON and JSON-LD serialization of DCAT. Others working with transforms between ISO 19115 and DCAT may also be interested in this crosswalk.
CSDGM to Project Open Data Metadata Schema v1.1 (POD v1.1) Crosswalk
| POD v1.1 | Label | Condition | Repeats | CSDGM Field | CSDGM xpath | Guidance |
|---|---|---|---|---|---|---|
| Catalog Fields | ||||||
| conformsTo | Schema Version | required | No | – | – | Populated by Agency Enterprise Inventory Application |
| dataset | Dataset | required | Yes | – | – | Populated by Agency Enterprise Inventory Application |
| Dataset Fields | ||||||
| title | Title | required | No | title | metadata>idinfo>citation>citeinfo>title |
|
| description | Description | required | No | abstract | metadata>idinfo>descript>abstract |
|
| keyword | Tags | required | Yes | keywords (theme, place, stratum, temporal) add to:Keyword (any type) = geospatial |
metadata>idinfo>keywords>theme>themekey & metadata>idinfo>keywords>place>placekeymetadata>idinfo>keywords>stratum>stratkeymetadata>idinfo>keywords>temporal>tempkey |
Compile values from Theme, Place, Stratum, and Temporal Keywords, e.g. vegetation, Gulf Coast, Hurricane Katrina |
| modified | Last Update | required | No | publication date | metadata>idinfo>citation>citeinfo>pubdate if non-date value, e.g. ‘unknown’ ‘unpublished’ then metadata>metainfo>metd |
If date lacks day (DD) values, eg. YYYYMM (201501), add a dash between the year and month (2015-01) |
| publisher>name | Publisher Name | required | No | publisher if null distributor name if null originator |
metadata>idinfo>citation>citeinfo>pubinfo>publish if null then metadata>distinfo>distrib>cntinfo>cntorgp>cntorg & metadata>distinfo>distrib>cntinfo>cntorgp>cntper if null then metadata>distinfo>distrib>cntinfo>cntperp>cntorg & metadata>distinfo>distrib>cntinfo>cntperp>cntper if null then metadata>idinfo>citation>citeinfo>origin |
If Distributor Contact used compile Organization Name and Person Name if both in CSDGM record, e.g. USGS, Mark Markson |
| contactPoint>fn | Contact Name | required | No | point of contact person name & organization name. if null, metadata contact person name and organization name | metadata>idinfo>ptcontac>cntinfo>cntorgp>cntorg & metadata>idinfo>ptcontac>cntinfo>cntorgp>cntper if null then metadata>idinfo>ptcontac>cntinfo>cntperp>cntorg & metadata>idinfo>ptcontac>cntinfo>cntperp>cntper if null then metadata>metainfo>metc>cntinfo>cntorgp>cntorg & metadata>metainfo>metc>cntinfo>cntorgp>cntper if null then metadata>metainfo>metc>cntinfo>cntperp>cntorgr & metadata>metainfo>metc>cntinfo>cntperp>cntpper |
Compile Organization Name and Person Name if both in CSDGM record, e.g. USGS, Mark Markson |
| contactPoint>hasEmail | Contact Email | required | No | point of contact person & organization if null, metadata contact email | metadata>idinfo>ptcontac>cntinfo>cntemail if metadata>idinfo>ptcontac>cntinfo>cntorgp>cntorg and metadata>idinfo>ptcontac>cntinfo>cntorgp>cntper null then metadata>metainfo>metc>cntinfo>cntemail |
Use the contact email associated with the POC designated above |
| identifier | Unique Identifier | required | No | title | metadata>idinfo>citation>citeinfo>title |
|
| accessLevel | Public Access Level | required | No | insert POD default public |
– | If data is not public, manually change value to restricted public or non-public. If most data is not public change your default value to restricted public or non-public |
| bureauCode | Bureau Code | required | Yes | hardcode into POD record | – | Insert value (hardcode) in bureau’s Enterprise Data Inventory |
| programCode | Program Code | required | Yes | hardcode into POD record, if not feasible, add to: Theme Keyword = <program code>, Theme Keyword Thesaurus = Federal Program Inventory |
metadata>idinfo>keywords>theme>themekey & metadata>idinfo>keywords>theme>themekt |
Insert value (hardcode) into POD record. If not feasible, add to Theme Keyword: 1) Locate program code in the Federal Program Inventory doc 2) Add Program Code, e.g. “015:001” as a Theme Keyword 3) List ‘Federal Program Inventory’ as associated Theme Keyword Thesaurus, include URL if wanted |
| spatial | Spatial | if applicable | No | bounding coordinates | metadata>idinfo>spdom>bounding>westbc, southbc, eastbc, northbc |
Compile West, South, East, North values into single string, e.g. west coordinate, east coordinate, north coordinate, south coordinate |
| temporal | Temporal | if applicable | No | time period of content | metadata>idinfo>timeperd>timeinfo>title>rngdates>begdates/enddate if null then metadata>idinfo>timeperd>timeinfo>title>mdattim (lowest as start date/ highest as end date) if null then metadata>idinfo>timeperd>timeinfo>title>sngdate>caldate (repeat as start/end date) |
Concatonate values, e.g. 20150101/20150202 |
| theme | Theme | optional | Yes | insert POD default geospatial |
– | Insert default value geospatial directly into POD record (POD requests this value to identify geospatial resources) |
| Distribution Fields | ||||||
| distribution>downloadURL | Download URL | if applicable | No | metadata>distinfo>storder>digform>digtoption>onlinopt>networka>networkr if null then metadata>idinfo>citation>citeinfo>onlink |
Include if CSDGM value occurs, first instance | |
| distribution>mediaType | Media Type | required for download URL | No | insert POD default application/http |
Insert default value application/http directly into POD record |
ISO 19115 to Project Open Data Metadata Schema v1.1 (POD v1.1) Crosswalk
| POD v1.1 | Label | Condition | Repeats | Guidance | ISO Description | ISO XPath |
|---|---|---|---|---|---|---|
| Catalog Fields | ||||||
| conformsTo | Schema Version | required | populated by Agency Enterprise Inventory Application | – | – | |
| dataset | Dataset | required | populated by Agency Enterprise Inventory Application | – | – | |
| Dataset Fields | ||||||
| title | Title | required | no | title | //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString |
|
| description | Description | required | no | abstract | //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:abstract/gco:CharacterString |
|
| keyword | Tags | required | yes | POD JSON validator expects unique keywords. | keywords (theme, place, temporal) | //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword (gco:CharacterString or gmx:Anchor) |
| modified | Last Update | required | no | 1. resource maintenance frequency 2. data citation revision date 3. first data citation date available |
1. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceMaintenance/gmd:MD_MaintenanceInformation/gmd:maintenanceAndUpdateFrequency/gmd:userDefinedMaintenanceFrequency/gts:TM_PeriodDuration2. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:dateType/gmd:CI_DateTypeCode == "revision" + gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:date/gco:Date 3. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:date/gco:Date |
|
| publisher > name | Publisher | required | no | 1. data citedResponsibleParty with publisher roleCode 2. point of contact with publisher roleCode 3. distributor |
1. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:organisationName/gmd:organisationName[../../gmd:role/gmd:CI_RoleCode/@codeListValue=’publisher’] 2. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:pointOfContact/gmd:CI_ResponsibleParty/gmd:organisationName[../../gmd:role/gmd:CI_RoleCode/@codeListValue=’publisher’] 3. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorContact/gmd:CI_ResponsibleParty/gmd:organisationName |
|
| publisher > subOrganizationOf | optional | no | – | – | ||
| contactPoint > fn | Contact Name | required | no | if person’s name is null, then use organization or position name | 1. point of contact 1a. person name 1b. organization 1c. position 2. data citedResponsibleParty with ‘pointOfContact’ roleCode 2a. person name 2b. organization 2c. position |
1a. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:pointOfContact/gmd:CI_ResponsibleParty/gmd:individualName (gco:CharacterString or gmx:Anchor) 1b. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:pointOfContact/gmd:CI_ResponsibleParty/gmd:organisationName (gco:CharacterString or gmx:Anchor) 1c. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:pointOfContact/gmd:CI_ResponsibleParty/gmd:positionName (gco:CharacterString or gmx:Anchor) 2a. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:individualName[../../gmd:role/gmd:CI_RoleCode/@codeListValue=’pointofContact’] 2b. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:organisationName[../../gmd:role/gmd:CI_RoleCode/@codeListValue=’pointofContact’]2c.//gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:positionName[../../gmd:role/gmd:CI_RoleCode/@codeListValue=’pointofContact’] |
| contactPoint > hasEmail | Contact Email | required | no | point of contact email | for point of contact above: //gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:CI_Contact/gmd:address/gmd:CI_Address/gmd:electronicMailAddress/gco:CharacterString |
|
| identifier | Unique Identifier | required | no | 1. Digital Object Identifier (DOI) URL 2. data identifier 3. metadata identifier 4. title |
1. if contains ‘doi’ or ‘DOI’ string //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gmx:Anchor/@xlink:href 2. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code 3. //gmd:fileIdentifier 4. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:title |
|
| accessLevel | Public Access Level | required | no | default value is “public” | 1. resource constraints with codes of restricted, confidential, secret, or topSecret 2. resource constraints with codes of copyright, patent, patentPending, trademark, license, or intellectualPropertyRights 3. ISO codes do not specify ‘public’ as a constraint code |
1. “non-public” when a. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:accessConstraints/gmd:MD_RestrictionCode == restricted b. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_SecurityConstraints/gmd:classification/gmd:MD_ClassificationCode == restricted, confidential, secret, or topSecret 2. “restricted public” when //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:accessConstraints/gmd:MD_RestrictionCode == copyright, patent, patentPending, trademark, license, or intellectualPropertyRights 3. set value of POD json field to public if these values do not exist in metadata |
| bureauCode | Bureau Code | required | yes | insert value when uploaded to Agency Enterprise Inventory | – | – |
| programCode | Program Code | required | yes | Recommend hardcoding program information into the POD, if not feasible then add to keywords - locate program code in the Federal Program Inventory doc - add Program Code, e.g. "015:001" as a Theme Keyword - list ‘Federal Program Inventory’ as associated Theme Keyword Thesaurus |
Keyword = <program code> + Thesaurus = Federal Program Inventory |
//gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword (gco:CharacterString or gmx:Anchor) + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:thesaurusName/gmd:CI_Citation/gmd:title = 'Federal Program Inventory' |
| license | License | if applicable | no | default value for government data is ‘Public Domain’ | – | – |
| rights | Rights | if applicable | no | 1. legal access restriction code 2. security constraints classification code |
1. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:accessConstraints/gmd:MD_RestrictionCode 2. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_SecurityConstraints/gmd:classification/gmd:MD_ClassificationCode |
|
| spatial | Spatial | if applicable | no | minimum longitude, minimum latitude, maximum longitude, maximum latitude | Geographic Bounding Coordinates | //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:westBoundLongitude + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:southBoundLatitude + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:eastBoundLongitude + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:northBoundLatitude |
| temporal | Temporal | if applicable | concatonate values, e.g. 2015-01-01/2015-02-02 |
1. time period begin and end dates 2. time instant 3. min and max value of multiple date ranges |
1. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent/gmd:extent/gml:TimePeriod/gml:beginPosition + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent/gmd:extent/gml:TimePeriod/gml:endPosition 2. if single date use this field to populate as both start/end date //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent/gmd:extent/gml:TimeInstant/timePosition 3. if more than two instances of this field exist choose the earliest date value and latest date value to populate the range of dates //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent/gmd:extent/gml:TimeInstant/timePosition |
|
| accrualPeriodicity | Frequency | optional | no | resource maintenance and update frequency | //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceMaintenance/gmd:MD_MaintenanceInformation/gmd:maintenanceAndUpdateFrequency/gmd:MD_MaintenanceFrequencyCode Convert values of this field based on the following mapping: continual - R/PT1S daily - R/P1D weekly - R/P1W fortnightly - R/P0.5M monthly - R/P1M quarterly - R/P3M biannually - R/P0.5Y asNeeded - irregular irregular - irregular notPlanned - irregular unknown - irregular |
|
| conformsTo | Data Standard | optional | no | – | – | |
| dataQuality | Data Quality | optional | no | – | – | |
| describedBy | Data Dictionary | optional | no | 1. feature catalog url 2. data dictionary URL |
1. //gmd:contentInfo/gmd:MD_FeatureCatalogueDescription/featureCatalogueCitation/CI_Citation/citedResponsibleParty/CI_ResponsibleParty/contactInfo/CI_Contact/onlineResource/CI_OnlineResource/linkage/URL 2. //gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/gmd:CI_OnlineResource/gmd:linkage/gmd:URL WHERE: //gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:initiativeType/gmd:DS_InitiativeTypeCode == dataDictionary |
|
| describedByType | Data Dictionary Type | optional | no | infer mime type from suffix of the url for describedBy tag | – | – |
| isPartOf | Collection | optional | no | 1. larger work identifier 2. larger work title 3. parent identifier |
1. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetIdentifier/gmd:MD_Identifier/gmd:code (gco:CharacterString or gmx:Anchor) + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:associationType/gmd:DS_AssociationTypeCode == largerWorkCitation 2. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/gmd:CI_Citation/gmd:title + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:associationType/gmd:DS_AssociationTypeCode == largerWorkCitation 3. //gmd:parentIdentifier (gco:CharacterString or gmx:Anchor) |
|
| issued | Release Date | optional | no | should be ISO 8601 extended date format | 1. data citation publication date 2. any data citation date |
1. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:dateType/gmd:CI_DateTypeCode == publication + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:date (gco:Date or gco:DateTime) 2. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:date (gco:Date or gco:DateTime) |
| language | Language | optional | yes | language of data | //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:languageConvert the value of this field based on the following mapping: eng; USA - en-US spa; USA - es-US eng; CAN - en-CA fre; CAN - fr-CA spa; MEX - es-MX |
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| landingPage | Homepage URL | optional | no | 1. doi url 2. distribution transfer options url with ‘information’ function code 3. distributor transfer options url with ‘information’ function code 4. data citation url with ‘information’ function code |
1. When contains ‘doi’ or ‘DOI’ //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gmx:Anchor/@xlink:href 2. //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == information + //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/linkage/URL 3. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == information + //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:linkage/gmd:URL 4. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == information + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/gmd:linkage/gmd:URL |
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| primaryITInvestmentUII | Primary IT Investment UII | optional | no | – | – | – |
| references | Related Documents | optional | yes | 1. crossreference url 2. source citation url 3. source citation url |
1. //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:associationType/gmd:DS_AssociationTypeCode == crossreference + //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/gmd:linkage/gmd:URL 2. //gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:lineage/gmd:LI_Lineage/gmd:source/gmd:LI_Source/gmd:sourceCitation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/linkage/URL 3. //gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:lineage/gmd:LI_Lineage/gmd:source/gmi:LE_Source/gmd:sourceCitation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/linkage/URL |
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| systemOfRecords | System of Records | optional | no | – | – | – |
| theme | Theme | optional | POD requested value to identify geospatial resources | ISO topic category | //gmd:identificationInfo/gmd:MD_DataIdentification/gmd:topicCategory/gmd:MD_TopicCategoryCode |
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| Dataset Distribution Fields | Distribution | optional | yes | |||
| accessURL | Access URL | if applicable | no | 1. distribution url with function code of information, search, order or offlineAccess 2. distributor url with function code of information, search, order or offlineAccess |
1. //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == information, search, order or offlineAccess + //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/linkage/URL 2. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == information, search, order or Offline Access + //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:linkage/gmd:URL |
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| conformsTo | Data Standard | optional | no | provide URL to specification of format | 1. distribution format specification 2. distributor format specification |
1. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributionFormat/gmd:MD_Format/gmd:specification IF content of gmd:specification begins with “http” 2. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorFormat/gmd:MD_Format/gmd:specification IF content of gmd:specification begins with “http” |
| describedBy | Data Dictionary | optional | no | feature catalog url | //gmd:contentInfo/gmd:MD_FeatureCatalogueDescription/featureCatalogueCitation/CI_Citation/citedResponsibleParty/CI_ResponsibleParty/contactInfo/CI_Contact/onlineResource/CI_OnlineResource/linkage/URL |
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| describedByType | Data Dictionary Type | optional | no | infer mime type from ‘describedBy’ url | – | – |
| description | Description | optional | no | 1. distribution url description with ‘download’ function 2. distributor url description with ‘download’ function |
1. //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:functiongmd:CI_OnLineFunctionCode == download + //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:description 2. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:functiongmd:CI_OnLineFunctionCode == download + //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:description |
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| downloadURL | Download URL | if applicable | no | 1. distribution url with ‘download’ function 2. distributor url with ‘download’ function |
1. //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == download + //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/linkage/URL 2. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == download + //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:linkage/gmd:URL |
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| format | Format | optional | no | 1. Distribution format name 2. Distributor format name | 1. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributionFormat/gmd:MD_Format/name/gco:CharacterString 2. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorFormat/gmd:MD_Format/gmd:name/gco:CharacterString |
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| mediaType | Media Type | if applicable | no | infer mime type from ‘downloadURL’ url | – | – |
| title | Title | optional | no | 1. distribution url name with ‘download’ function 2. distributor url name with ‘download’ function |
1. //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == download + //gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:name/gco:CharacterString 2. //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:function/gmd:CI_OnLineFunctionCode == download + //gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource/gmd:name/gco:CharacterString |