DCAT
The catalogue vocabulary that lets one open-data portal harvest another. It is the difference between a portal that is listed nationally and one that is an island.
How this list is decided. Membership is not a field an editor set: it is every published entry whose own text names DCAT, matched at build time, with the sentence printed under each row so you can judge the match yourself. 3 entries in 3 cities.
✔ Every published entry is checked against the public sources it cites before publication.
Where it appears in the atlas
In the portal's machine-readable DCAT feed, the form an aggregator reads, 70 of the 201 datasets present expose a licence a machine can resolve, 69 of them the Open Government Licence v3 URL and one an NHS terms page, while 39 expose an empty licence field.
Portal's own policy page: "Nice Côte d'Azur propose d'utiliser la Licence Ouverte d'Etalab", open-source stack (Drupal, CKAN, Piwik), DCAT compliance for harvesting, membership of OpenDataFrance, and partnership agreements with member communes defining each party's role.
The portal, opendata.dc.gov, runs on Esri's ArcGIS Hub and serves a DCAT-US feed.
Others in this group
The whole layer
Every standard, protocol and licence the atlas names, with the open-data licence ladder in one table: Standards & licences.