Registry vocabulary

The terms that the RDF exports use for facts that SKOS, Dublin Core and RDFS have no term for: regular expressions, check digits, the PII flag, status and tools.

Namespace https://registry.apicrafter.io/vocab#, prefix mcr:. The OWL declaration is /vocab.ttl. The terms are used in the concept scheme /registry.ttl and in the Turtle file of each record, /datatype/<id>.ttl. Terms are added, never removed or renamed.

Term	Kind	Domain → range	Meaning
mcr:Tool	owl:Class		Software that detects, masks or catalogs values of registry datatypes. Each tool is described at /tool/<id>.
mcr:supportedType	owl:ObjectProperty	mcr:Tool → skos:Concept	A registry datatype or pattern that the tool supports.
mcr:status	owl:DatatypeProperty	skos:Concept → xsd:string	Review status of the record: draft (not reviewed yet), stable (reviewed) or deprecated.
mcr:isPII	owl:DatatypeProperty	skos:Concept → xsd:boolean	True when values of this type are personal data (PII).
mcr:classification	owl:DatatypeProperty	skos:Concept → xsd:string	identifier when a value identifies an entity, categorical when values come from a closed list of codes or categories.
mcr:regexp	owl:DatatypeProperty	skos:Concept → xsd:string	Regular expression in Python re syntax that a whole value matches, usually anchored with ^ and $. It is not an XML Schema or XPath pattern.
mcr:checksum	owl:DatatypeProperty	skos:Concept → xsd:string	Name of the check-digit algorithm that validates a value, for example luhn or iban_mod97.

Standard terms

Other facts use standard terms:

skos:example: a value that matches the datatype (negative examples are not exported)
skos:exactMatch: the same concept in Wikidata, Schema.org, FIBO, Bioregistry, FHIR or D3M
skos:broadMatch: the DPV personal-data category
dcterms:spatial: a country page of this registry
dcterms:language: an ISO 639-1 language
rdfs:seeAlso: Wikipedia articles, standards and other documentation
owl:deprecated and dcterms:isReplacedBy: deprecated records