Data and datasets: standards that apply
The 3 standards listed for data and datasets in the registry, each with its status, UNI (Unique Nexus Identifier) and the rules stated in its text.
- Nexus Standards: NS-1, NS-3, NS-3b, NS-11.
- Open standards: Data Catalog Vocabulary (DCAT) Version 3; PROV-O: The PROV Ontology; SpatioTemporal Asset Catalog (STAC); FAIR Guiding Principles; CARE Principles for Indigenous Data Governance; Schema.org Dataset; Statistical Data and Metadata eXchange (SDMX); Croissant metadata format for ML-ready datasets.
- Data and feeds: re3data registry of research data repositories API; World Bank Data Catalog and Indicators API; DataCite REST API (DOIs).
- Couples with: Provenance and evidence; Naming, marks and intellectual property; Indicators and statistics; Geospatial and Earth observation.
- Nexus Standards
- 4
- NS-1, NS-3, NS-3b
- Open standards
- 8
- named, never copied
- Data and feeds
- 3
- listed for reference
- Couplings
- 4
- with other areas
Risk record UNIs (grammar, legacy crosswalk, allocation authority)
Status proposed · trust, authorisation and assurance; canonical risk data, records and provenance · NXS-STD-ST-000003.
NS-3 states its requirements in sections rather than in a table of rules.
Dataset and product metadata profile (STAC, DCAT, PROV-O)
Status proposed · trust, authorisation and assurance; canonical risk data, records and provenance · NXS-STD-SW-000005.
NS-3b states its requirements in sections rather than in a table of rules.
Verification and monitoring (evidence, attestations, zero-trust conformance observation)
Status proposed · trust, authorisation and assurance · NXS-STD-ST-000007.
| Rule | Text |
|---|---|
NS11-R1 | A conformance statement shall rest on an attestation, and an attestation shall name an evaluator, a mandate, evidence references and a digest. |
NS11-R2 | Under zero trust, subject and evaluator shall be distinct, and production evaluations shall run outside the subject’s trust boundary. |
NS11-R3 | Missing or unresolvable evidence shall yield INDETERMINATE or REFUSED, never PASS (NS0-P12). |
NS11-R4 | Attestations shall be append-only and superseded rather than changed; monitoring records shall be observations with record UNIs. |
NS11-R5 | Every displayed conformance value shall carry its evaluation instant and its evaluator; projections shall not store verdicts. |
NS11-R6 | Exports to Verifiable Credentials, in-toto or PROV-O are crosswalks; the Nexus attestation shall remain the record of truth. |
Questions and answers.
Are these all the rules for data and datasets?
What does a rule identifier such as NS1-R5 denote?
Around data and datasets.
Shape the standards for data and datasets.
Governments, regulators, standards bodies, industry, academia and communities are invited to shape the catalogue ahead of its first official release, targeted for 2030: comment on a draft, propose a change, join a working group or host a field exercise.
Status and use. The Nexus Standards are proposed standards developed through an open process under NS-13 and published for voluntary use; they do not constitute certification, accreditation or regulatory approval, and adoption remains a decision of the Global Standards Council and, in each country, of its National Standards Council. A UNI (Unique Nexus Identifier) identifies an artefact; it does not certify it. Names of standards bodies and their standards belong to their stewards and are used only to identify the documents; no text of an external standard is reproduced here. Nexus Standards is not affiliated with, endorsed by or certified by any standards body named here.
Licences: CC BY 4.0 for standards text, registries, schemas and data; Apache-2.0 for reference code. External standards are cited by name, number and link under their own licences. Third-party data, libraries and fonts keep their own licences: see Third-party notices.