DCAT Profile

Adapted from DCAT 2 (Version 20200204).

Namespaces

The table below indicates the full list of namespaces and prefixes of the vocabularies and specifications used in this profile.

Prefix	Namespace URI	Schema & documentation
cnt	http://www.w3.org/2011/content#	[CONTENT-IN-RDF]
dc	http://purl.org/dc/elements/1.1/	[DC11]
dcat	http://www.w3.org/ns/dcat#	[VOCAB-DCAT]
dct	http://purl.org/dc/terms/	[DCTERMS]
foaf	http://xmlns.com/foaf/0.1/	[FOAF]
locn	http://www.w3.org/ns/locn#	[LOCN]
org	http://www.w3.org/ns/org#	[VOCAB-ORG]
rdf	http://www.w3.org/1999/02/22-rdf-syntax-ns#	[RDF-CONCEPTS]
rdfs	http://www.w3.org/2000/01/rdf-schema#	[RDF-SCHEMA]
schema	http://schema.org/	[SCHEMA-ORG]
skos	http://www.w3.org/2004/02/skos/core#	[SKOS-REFERENCE]
vcard	http://www.w3.org/2006/vcard/ns#	[vCARD-RDF]
wd	http://www.wikidata.org/entity/	[WB-RDF-DUMP]
xsd	http://www.w3.org/2001/XMLSchema#	[XMLSCHEMA11-2]

Mappings

This section describes the alignments of the metadata of depositar and RDF vocabularies defined in this profile.

Fields:

• Field: The name of the field.

• Mappings: The mapped RDF vocabularies in prefixed name [1].

• Range: The instance used to state that the values of a property (mapped RDF vocabulary) are instances of one or more classes. See rdfs:range.

• Specification: The specification and its document of the mapping.

Dataset Level

Field	Mappings	Range	Specification	Comments
Title	dct:title	rdfs:Literal	DCAT 2
URL	dct:identifier	rdfs:Literal	DCAT 2
Description	dct:description	rdfs:Literal	DCAT 2	Markdown syntax removed
Data Type	dct:type	rdfs:Class	DCAT 2	See Field Transforms
Wikidata Keywords	dcat:theme	skos:Concept	DCAT 2	See Field Transforms
Tags	dcat:keyword	rdfs:Literal	DCAT 2
Language	dct:language	dct:LinguisticSystem	DCAT 2	See Field Transforms
Remarks	(No Mapping)	(N/A)	(N/A)	(N/A)
Temporal Resolution	dcat:temporalResolution	xsd:duration	DCAT 2	See Field Transforms
(Field Type: Temporal Information)	dct:temporal	dct:PeriodOfTime	DCAT 2	See Mappings for Child Elements Includes the following fields: Start Time End Time
(Field Type: Spatial Coverage)	dct:spatial	dct:Location	DCAT 2	See Mappings for Child Elements See Field Transforms Includes the following fields: Spatial Coverage X.min X.max Y.min Y.max
Spatial Resolution	dcat:spatialResolutionInMeters	xsd:decimal	DCAT 2
License	dct:license	dct:LicenseDocument	DCAT 2	See Field Transforms
Creator	dc:creator	rdfs:Literal	DCAT-AP-JRC
Created Time	dct:issued	rdfs:Literal	DCAT 2
Process Step	dct:provenance	dct:ProvenanceStatement	DCAT-AP-JRC	Markdown syntax removed
(Field Type: Project)	dct:publisher	foaf:Agent	DCAT 2	See Mappings for Child Elements Includes the following fields: Name Description
(Field Type: Contact Information)	dcat:contactPoint	vcard:Kind	DCAT 2	See Mappings for Child Elements Includes the following fields: Contact Person Contact Person Ema
Topic	dcat:theme	skos:Concept	DCAT 2	You should complete the upload process of the dataset before adding a dataset to a topic. See Extended feature — Add a dataset to an existing topic.

Resource Level

Field	Mappings	Range	Specification	Comments
URL	dcat:downloadURL	rdfs:Resource	DCAT 2
Name	dct:title	rdfs:Literal	DCAT 2
Description	dct:description	rdfs:Literal	DCAT 2	Markdown syntax removed
Character Encoding	cnt:characterEncoding	rdfs:Literal	GeoDCAT-AP
Coordinate Systems	dct:conformsTo	dct:Standard	GeoDCAT-AP	See Field Transforms
Format	dcat:mediaType	dct:MediaTypeOrExtent	DCAT 2	See Field Transforms

Mappings for Child Elements

This section describes the alignments of the metadata of depositar and RDF vocabularies used by fields with child elements defined in this profile.

Fields:

• Type: The type of the field.

• Field: The name of the field.

• Domain: The instance used to state that any child element that has a given property (mapped RDF vocabulary) is an instance of one or more classes. See rdfs:domain.

• Mappings: The mapped RDF vocabularies in prefixed name [1].

• Range: The instance used to state that the values of a property (mapped RDF vocabulary) are instances of one or more classes. See rdfs:range.

Type	Field	Domain	Mappings	Range	Comments
Temporal Information	Start Time	dct:PeriodOfTime	schema:startDate	ISO8601 date format
Temporal Information	End Time	dct:PeriodOfTime	schema:endDate	ISO8601 date format
Spatial Coverage	Spatial Coverage	dct:Location	locn:geometry	locn:Geometry
Spatial Coverage	X.min X.max Y.min Y.max	dct:Location	locn:geometry	locn:Geometry	Use RDF (schema.org) format recommended by locn:Geometry.
Project	Name	foaf:Agent	foaf:name	rdfs:Literal
Project	Description	foaf:Agent	org:purpose	rdfs:Literal
Contact Information	Contact Person	vcard:Kind	vcard:fn	xsd:string
Contact Information	Contact Person Email	vcard:Kind	vcard:hasEmail	vcard:Email

Field Transforms

This section describes transforms of values of some fields to fit the range of mapped RDF vocabularies.

Fields:

• Field: The name of the field.

• Identifier Type / Scheme: The specification and its document of the transformed value.

• URI Prefix: URI prefix used in transformed value.

• Example (Original): The original value of the field.

• Example (Transformed): The transformed value to expose.

Dataset Level

Field	Identifier Type / Scheme	URI Prefix	Example (Original)	Example (Transformed)	Comments
Data Type	PARSE.Insight Content-types	http://registry.it.csiro.au/def/re3data/contentType/_	Standard office documents (internal value: doc)	http://registry.it.csiro.au/def/re3data/contentType/_doc	For internal values, please refer to the notation field in PARSE.Insight Content-types.
Wikidata Keywords	Wikidata items	http://www.wikidata.org/entity/	unmanned aerial vehicle (internal value: Q484000)	http://www.wikidata.org/entity/Q484000	Internal value is the Wikidata QID.
Language	ISO 639-3	http://www.lexvo.org/page/iso639-3/	Chinese (zho)	http://www.lexvo.org/page/iso639-3/zho	See the related discussion.
Temporal Resolution	(N/A)	(N/A)	Yearly Monthly Daily	P1Y P1M P1D	According to DCAT 2.
X.min X.max Y.min Y.max	(N/A)	(N/A)	(X.min, X.max, Y.min, Y.max) = (116.658, 122.134, 20.653, 26.407)	20.653 116.658 26.407 122.134	According to the discussion thread from public-vocabs@w3.org.
License	(N/A)	(N/A)	CC-BY 4.0	https://creativecommons.org/licenses/by/4.0/	For licenses and their urls, please refer to the url field in this JSON file.

Resource Level

Field	Identifier Type / Scheme	URI Prefix	Example (Original)	Example (Transformed)	Comments
Coordinate Systems	EPSG code	http://www.opengis.net/def/crs/EPSG/0/	3826	http://www.opengis.net/def/crs/EPSG/0/3826	According to GeoDCAT-AP.
Format	Media type	https://www.iana.org/assignments/media-types/	text/csv	https://www.iana.org/assignments/media-types/text/csv	The original value is generated automatically against each resource as it is uploaded. External resources are not supported at the moment.

[1] (1,2)

prefix label:local part format。For prefix labels and their corresponding IRIs, please refer to the Prefix and Namespace URI, respectively, in the Namespaces.