Opendata maturity : rapport 2025
Maël REBOUX
Bonjour,
C'est toujours sympa de se dire que l'on ne travaille pas dans le vide : https://data.europa.eu/en/open-data-maturity/2025
Avec une dataviz assez sympa.
France (100 %) maintains its position as the most mature country in the quality dimension (Figure 15).
Latvia (95 %) and Ukraine (94 %) hold second and third place.
Highlight from France – technical integration for DCAT-AP
One of the key challenges highlighted in this year’s report for DCAT-AP compliance is technical
integration from diverse systems.
France has taken extensive measures to guarantee that its national catalogue exposes correct DCAT-
AP descriptions of datasets, particularly in the context of HVD reporting. The first approach involved
leveraging the Semantic Interoperability Community (SEMIC) ISO 19139 to DCAT-AP Extensible
Stylesheet Language Transformations (XSLT) as the main interoperability solution for harvesting
metadata from decentralised or thematic geographical platforms. This required in-depth studies of
common issues, such as licences, data services, contact points and other responsible parties, which
were addressed either at the metadata level or during harvesting.
To ensure proper interpretation by the European Data Portal (data.europa.eu), France validated its
DCAT-AP exposition using SPARQL (SPARQL Protocol and RDF Query Language), reporting endpoints
to list required metadata fields. This process revealed inconsistencies in the national catalogue’s
exposition, which have since been corrected, strengthening compliance and interoperability.
This proactive approach demonstrates how systematic validation and iterative improvements can
significantly enhance the accuracy and reliability of DCAT-AP metadata across national catalogues.
Read more about this trend in Section 6.4.
| Maël REBOUX Chef de projet données et diffusion Service Données Territoriales et Information Géographique Rennes Métropole -- T. 02 99 86 63 71 / 02 23 62 22 70 / --
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