Excerpt |
---|
This page details how to represent the information definition outlined in Complex and simple types using DCAT2. It mostly concerns dataset and dataset series. For example, the queryDatasets operation may return DCAT structured data. |
Info |
---|
DCAT 2 is used in https://www.europeandataportal.eu/en |
Table of Contents |
---|
Info |
---|
Assumptions
|
DCAT Elements
Dataset
Type name | Property name | Definition | Type | DCAT2 | From Renato | Profile Notes |
---|---|---|---|---|---|---|
Dataset | Metadata about a dataset. | dcat:Dataset | ||||
id | Identification of the dataset (eg a URI) | IdentifierType | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_identifier | dct:identifier | Typically a URI but could also be a string | |
title | Title of the dataset | string | dct:title | The name of the dataset | ||
shortDescription | Free text providing a short description of the dataset | string | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_description | dct:description | The description of the dataset | |
type | Indication the main content of the dataset. | CodeDatasetType | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_type with list coming from ICAO Annex 15 | dct:type | The type of data contained in the dataset Example: Obstacle Data Set | |
subject | Scope of the dataset expressed as a list of subjects . | CodeDataSubjectType | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_theme | dcat:theme (assoc) | The values will need to be represented as URIs Use the PANS AIM data catalogue terms (from App1-1) as URLs: http://icao.int/pans/aim/subject/airspace | |
updateType | Indication on how far the dataset has full content or represents an update. | CodeUpdateType | Needed? Agreed that updates not possible. | dct:format | Example: Baseline or Delta (Note: dct:format is an element of the wider Dublin Core metadata set) | |
isAiracUpdate | Indication that the dataset has been updated according to the AIRAC System. | boolean | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_keyword with literal "is AIRAC" | prov:wasGeneratedBy | Uses an instance of prov:Activity with attribute:
| |
limitationsOnUse | Free text clarifying limitations with regard to the use of the dataset. | string | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_access_rights https://www.w3.org/TR/vocab-dcat-2/#Property:resource_license https://www.w3.org/TR/vocab-dcat-2/#Property:resource_rights | odrl:hasPolicy | Uses an instance of odrl:Prohibition with attribute:
| |
encoding | Standard encoding of the data | CodeDataEncodingType | --- https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_format | dct:conformsTo | Example value: AIXM 5.1.1 | |
effectiveDate | Start of the validity period for the dataset | date | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_update_date | dct:temporal | Uses an instance of dct:PeriodOfTime with attributes:
| |
endValidity | End of the validity period for the dataset. When absent, no end is specified. | date | https://www.w3.org/TR/vocab-dcat-2/#Property:dataset_temporal | dct:temporal | Uses an instance of dct:PeriodOfTime with attributes:
| |
publicationDate | Date at which the dataset became available. | date | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_release_date | dct:issued | ISO8601 date fomat | |
datasetSeriesId | id of the corresponding dataseries | IdentifierType | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_qualified_relation | dct:isPartOf | Relates the dataset to the Series | |
geographicalScope | The locations defining the scope of the dataset | Location | https://www.w3.org/TR/vocab-dcat-2/#Property:dataset_spatial | dct:spatial | Uses an instance of dct:Location with Dublin Core, vCard, and AIXM attributes:
| |
datasetFile | The dataset file that the metadata concerns | File | this is the distribution https://www.w3.org/TR/vocab-dcat-2/#Class:Distribution | dcat:distribution | Uses an instance of a dcat:Distribution with attribute:
Example values: file:///donlon-airport-2020-05-05.xml http://example.aero/dataset/2020/05/airport/xml |
DatasetSeries
Type name | Property name | Definition | Type | DCAT2 | From Renato | Profile Notes |
---|---|---|---|---|---|---|
DatasetSeries | Metadata about a dataset series. | https://www.w3.org/TR/vocab-dcat-2/#Class:Catalog | dcat:Catalog | |||
id | Identification of the dataset series (eg a URI) | IdentifierType | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_identifier | dct:identifier | ||
title | Title of the dataset series | string | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_title | dct:title | ||
type | Enumeration indicating the main content of the dataset | CodeDatasetType | dct:type | |||
dataSubject | Data subject as defined in ICAO PANS-AIM | CodeDataSubjectType | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_theme | dcat:theme (assoc) | ||
limitationsOnUse | Free text clarifying limitations with regard to the use of the datasets | string | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_access_rights https://www.w3.org/TR/vocab-dcat-2/#Property:resource_license https://www.w3.org/TR/vocab-dcat-2/#Property:resource_rights | odrl:hasPolicy | ||
encoding | Standard encoding of the data | CodeDataEncodingType | --- https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_format | dct:conformsTo | ||
geographicalScope | The locations defining the scope of the dataset series | Location | https://www.w3.org/TR/vocab-dcat-2/#Property:dataset_spatial | dct:spatial | Links to the related Data Product Specification Document | |
DPSId | id of the corresponding data product specification | IdentifierType | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_qualified_relation | dct:isReferencedBy | ||
dcat:dataset | Links to an instance of a dataset in this series |
DataProductSpecification
Type name | Property name | Definition | Type | DCAT | From Renato | Profile Noted |
---|---|---|---|---|---|---|
DataProductSpecification | Metadata about a Data Product Specification. | https://www.w3.org/TR/vocab-dcat-2/#Class:Resource | dcat:Resource | |||
id | Identification of the data product specification | IdentifierType | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_identifier | dct:identifier | ||
title | Title of the data product specification | string | https://www.w3.org/TR/vocab-dcat-2/#Property:resource_title | dct:title | ||
dpsFile | The file that the metadata concerns | File | this is the distribution https://www.w3.org/TR/vocab-dcat-2/#Class:Distribution | dcat:distribution | Uses an instance of a dcat:Distribution with attribute:
Example values: file:///donlon-airport-DPS-2020-pdf http://example.aero/dataset/2020/airport.pdf | |
dct:type | dct:type used to indicate it is a DPS document type | |||||
dct:references | Used to link to the DatasetSeries |
File
Type name | Property name | Definition | Type | DCAT2 | From Renato | Profile Notes |
---|---|---|---|---|---|---|
File | Metadata about a file. | https://www.w3.org/TR/vocab-dcat-2/#Class:Distribution | ||||
id | Identification of the dataset file The identification is unique within a service instance | IdentifierType | https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_url | |||
name | Name of the file | FileNameType | https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_title | |||
format | Format of the file | CodeFileFormatType | https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_format | |||
size | Size of the file in Bytes. | Number | https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_size |
Examples
Describing the Dataset Series
{
"@id": "http://donlon.aero/dataset/aerodrome.json",
"@type": "dcat:Catalog",
"dct:identifier": "aerodrome-series-2020",
"dct:title": "Donlon Aerodrome Dataset Series 2020",
"dct:type": "Aerodrome Dataset",
"dcat:theme": "http://icao.int/pans/aim/subject/aerodrome",
"dct:conformsTo": "AIXM 5.1.1",
"dct:dataset": ["http://donlon.aero/dataset/aerodrome/2020/Jan.json",
"http://donlon.aero/dataset/aerodrome/2020/Mar.json",
"http://donlon.aero/dataset/aerodrome/2020/May.json"],
"dct:isReferencedBy": "http://donlon.aero/dps/aerodrome.json",
"dct:spatial": "http://donlon.aero/location/donlon.json"
}
Describing the Location
{
"@id": "http://donlon.aero/location/donlon.json",
"@type": "Airport",
"dct:spatial": [
{
"aixm:name": "Donlon International Airport",
"aixm:designator": "DONDON",
"aixm:designatorIATA": "ZZZZ"
}]
}
Describing the May 2020 Dataset
{
"@id": "http://donlon.aero/dataset/aerodrome/2020/May.json",
"@type": "dcat:Dataset",
"dct:identifier": "aerodrome-donlon-2020-may",
"dct:title": "Donlon Aerodrome Dataset - May 2020",
"dct:type": "Aerodrome Dataset",
"dcat:theme": "http://icao.int/pans/aim/subject/aerodrome",
"dct:format": "Baseline",
"prov:wasGeneratedBy": [
{
"@type": "prov:Activity",
"prov:used": "AIRAC"
}],
"odrl:hasPolicy": [
{
"@type": "odrl:Prohibition",
"odrl:action": "operational-use"
}],
"dct:conformsTo": "AIXM 5.1.1",
"dct:temporal": [
{
"@type": "dct:PeriodOfTime",
"dct:startDate": "2020-05-01",
"dct:endDate": "2020-06-30"
}],
"dct:issued": "2020-04-01",
"dct:spatial": "http://donlon.aero/location/donlon.json",
"dct:isPartOf": "http://donlon.aero/dataset/aerodrome.json",
"dcat:distribution": [
{
"@type": "dcat:Distribution",
"dcat:downloadURL": "http://donlon.aero/dataset/aerodrome/2020/May/data.xml"
}]
}
Describing the Data Product Specification
{
"@id": "http://donlon.aero/dps/aerodrome.json",
"@type": "dcat:Resource",
"dct:identifier": "dps-aerodrome-series-2020",
"dct:title": "Data Product Specification: Donlon Aerodrome Dataset Series 2020",
"dct:type": "DPS",
"dca:references": "http://donlon.aero/dataset/aerodrome.json",
"dcat:distribution": [
{
"@type": "dcat:Distribution",
"dcat:downloadURL": "http://donlon.aero/dps/aerodrome-2020-May.pdf"
}]
}