Version 2.0 of the Requirements for Datasets is on the horizon. It tightens rules that are warnings today into full requirements, aligns the Dataset Register with DCAT-AP-NL 3.0, and raises the baseline quality of dataset descriptions across the Dutch cultural heritage network. Publishers and collection management system vendors have until Monday 3 May 2027 to prepare.
Schema.org is the web’s most widely adopted vocabulary for structured data, supported by Google, Bing, and countless data platforms.
It defines types like CreativeWork, Person, and Organization, giving machines a common language to understand content.
This is exactly why the NDE application profile is built on Schema.org.
Getting it right is what makes cultural heritage data findable and reusable across institutions.
But if you’ve worked with Schema.org in RDF, you’ve run into this: there’s http://schema.org and then there’s https://schema.org.
That one-letter difference can cause real problems:
SPARQL queries that silently return nothing, SHACL validation that rejects good data or ignores bad data, or datasets that should link up but don’t – especially when combining data from multiple sources, as in NDE.
This post originally recommended http://schema.org/ (HTTP) based on reasons outlined below. It sparked exactly the discussion we hoped for: a structured conversation with stakeholders from NDE, CLARIAH, ODISSEI, and heritage institutions. On 2 April 2026, participants reached consensus on https://schema.org/ (HTTPS). This post has been updated to reflect that decision – see the recommendation.
The Network of Terms now offers the ability to filter by subject within a terminology source.
We launched a public status page to provide real-time insight into the availability of NDE services.
The Network of Terms now monitors each terminology source and exposes its availability via the website and the GraphQL API.
New thesaurus for movable agricultural heritage available via the Network of Terms
Yes, although hyphens have no meaning in the Assigned Name of an ARK, you can use UUIDs as Assigned Names in ARK, the local resolver does need to be made aware.
The Network of Terms has been expanded with four new thesauri. These sources provide access to knowledge about heritage, history, regional topics and social themes, and supply concepts for describing and linking heritage information.
We are improving the Dataset Register website to make dataset discovery faster and more intuitive.
The Network of Terms now includes GeoNames places from all over the world.