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Purpose

Final draft of DCAT application profile for data portals in Europe (v 0.06) of was put forward and we need to asses it:

  1. DCAT AP itself
  2. it's relation to metadate about datasets we proposed for Vynos 2013/165 in Slovakia

Report

DCAT AP

DCAT AP relates to:

  • several models:
    • Asset Description Metadata Schema (ADMS)
    • CERIF for Datasets (C4D)
    • CKAN Dataset Schema
    • INSPIRE Metadata Specification
    • Schema.org
    • Statistical Data and Metadata eXchange (SDMX)
    • Vocabulary of Interlinked Datasets (VoID)
  • several application profiles:
    • Austrian Open Government Data Cooperation
    • Norma Técnica de Interoperabilidad de Reutilización de recursos de la información (Spain)
    • Project Open Data Common Core Metadata Schema (US)
    • WMO Core Metadata Profile (World Meteorological Organization)

The basic use case of the specification is a cross-data portal search for data sets, including cross-lingual search. Additionaly, it also covers metadata update propagation from Data Portals to Metadata Brokes (see "User Scenario 7 – Creations, updates, and deletes of catalog entries") and other use cases.

It defines mandatory and optional classes, mandatory and optional relations between them and also controlerd vocabularies.

DCAT

DCAT AP builds on DCAT specification (Data Catalog Vocabulary (DCAT), version 12 March 2013, published by the Government Linked Data Working Group of W3C as a Last Call Working Draft with a deadline for comments of 08 April 2013).

Basic DCAT classes are:

  • Catalog
  • Catalog record
  • Dataset
  • Distribution
  • Category and category scheme
  • Organization/Person

DCAT AP vs. Vynos 2013/165 (draft)

Draft of Vynos 2013/165 proposes following metadata items (see "§ Otvorené údaje", odsek c) - in table compared/linked to items as specified in DCAP AP:

Vynos 2013/165 (draft)DCAT APnotes
názov datasetuDataset dct:description
Dataset dct:title
Distribution dct:description
Distribution dct:title		multiple choices, Vynos should later specify the precise mapping of "nazov": either dct:description or dct:title
dátum prvého zverejnenia datasetuDataset dct:issued
Distribution dct:issued		multiple choices, Vynos should later specify the precise mapping
DCAT defines the range of entry as rdfs:Literal typed as xsd:date, Vynos does not specify
dátum zverejnenia aktuálnej verzie datasetuDataset dct:modified
Distribution dct:modified		DCAT defines the range of entry as rdfs:Literal typed as xsd:date, Vynos does not specify
jednoznačný identifikátor poskytovateľa datasetuDataset dct:publisherDCAT defines the range of entry as foaf:Agent, Vynos does not specify
identifikátor datasetu v tvare referencovateľného identifikátora

Dataset dct:identifier

 
informácia o licencii pre použitie datasetu alebo spôsob vysporiadania právnych aspektov prístupu k údajom v datasete a ich používaniu

Distribution dct:license

 
začiatok platnosti datasetuno direct mappingoptional in Vynos
can be defined as dct:modified
ukončenie platnosti datasetuno direct mapping

optional in Vynos
can be defined as combination of dct:modified and dct:acctualPeriodicity

začiatok účinnosti datasetuno direct mappingoptional in Vynos
ukončenie účinnosti datasetuno direct mappingoptional in Vynos
schému údajov datasetuno direct mappingoptional in Vynos
Dataset dcat:landingPage can be used to point to web page which will then point to dataset schema defiition
popis typov položiek a podobneno direct mappingoptional in Vynos
Dataset dcat:landingPage can be used to point to web page which will then point to description of dataset records
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