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. |