title: Core LinkML metamodel types name: types id: https://w3id.org/linkml/types description: Shared type definitions for the core LinkML mode and metamodel license: https://creativecommons.org/publicdomain/zero/1.0/ prefixes: linkml: https://w3id.org/linkml/ xsd: http://www.w3.org/2001/XMLSchema# shex: http://www.w3.org/ns/shex# schema: http://schema.org/ default_prefix: linkml default_range: string # ================================== # Common type definitions # # Definition consists of: # : type name # uri: RDF datatype # base: python base type # repr: representational form in yaml/python if different than representation in base # (additional metadata) # ================================== types: string: uri: xsd:string base: str description: A character string notes: >- In RDF serializations, a slot with range of string is treated as a literal or type xsd:string. If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "string". exact_mappings: - schema:Text integer: uri: xsd:integer base: int description: An integer notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "integer". exact_mappings: - schema:Integer boolean: uri: xsd:boolean base: Bool repr: bool description: A binary (true or false) value notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "boolean". exact_mappings: - schema:Boolean float: uri: xsd:float base: float description: A real number that conforms to the xsd:float specification notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "float". exact_mappings: - schema:Float double: uri: xsd:double base: float description: A real number that conforms to the xsd:double specification notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "double". close_mappings: - schema:Float decimal: uri: xsd:decimal base: Decimal description: A real number with arbitrary precision that conforms to the xsd:decimal specification notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "decimal". broad_mappings: - schema:Number time: uri: xsd:time base: XSDTime repr: str description: A time object represents a (local) time of day, independent of any particular day notes: - URI is dateTime because OWL reasoners do not work with straight date or time - If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "time". exact_mappings: - schema:Time date: uri: xsd:date base: XSDDate repr: str description: a date (year, month and day) in an idealized calendar notes: - URI is dateTime because OWL reasoners don't work with straight date or time - If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "date". exact_mappings: - schema:Date datetime: uri: xsd:dateTime repr: str base: XSDDateTime description: The combination of a date and time notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "datetime". exact_mappings: - schema:DateTime date_or_datetime: uri: linkml:DateOrDatetime repr: str base: str description: Either a date or a datetime notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "date_or_datetime". uriorcurie: uri: xsd:anyURI base: URIorCURIE repr: str description: a URI or a CURIE notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "uriorcurie". curie: uri: xsd:string base: Curie repr: str description: a compact URI comments: - in RDF serializations this MUST be expanded to a URI - in non-RDF serializations MAY be serialized as the compact representation notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "curie". conforms_to: https://www.w3.org/TR/curie/ uri: uri: xsd:anyURI base: URI repr: str description: a complete URI comments: - >- in RDF serializations a slot with range of uri is treated as a literal or type xsd:anyURI unless it is an identifier or a reference to an identifier, in which case it is translated directly to a node notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "uri". close_mappings: - schema:URL conforms_to: https://www.ietf.org/rfc/rfc3987.txt ncname: uri: xsd:string base: NCName repr: str description: Prefix part of CURIE notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "ncname". objectidentifier: uri: shex:iri base: ElementIdentifier repr: str description: A URI or CURIE that represents an object in the model. comments: - Used for inheritance and type checking notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "objectidentifier". nodeidentifier: uri: shex:nonLiteral base: NodeIdentifier repr: str description: A URI, CURIE or BNODE that represents a node in a model. notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "nodeidentifier". jsonpointer: uri: xsd:string base: str repr: str description: >- A string encoding a JSON Pointer. The value of the string MUST conform to JSON Point syntax and SHOULD dereference to a valid object within the current instance document when encoded in tree form. conforms_to: https://datatracker.ietf.org/doc/html/rfc6901 notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "jsonpointer". jsonpath: uri: xsd:string base: str repr: str description: >- A string encoding a JSON Path. The value of the string MUST conform to JSON Point syntax and SHOULD dereference to zero or more valid objects within the current instance document when encoded in tree form. conforms_to: https://www.ietf.org/archive/id/draft-goessner-dispatch-jsonpath-00.html notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "jsonpath". sparqlpath: uri: xsd:string base: str repr: str description: >- A string encoding a SPARQL Property Path. The value of the string MUST conform to SPARQL syntax and SHOULD dereference to zero or more valid objects within the current instance document when encoded as RDF. conforms_to: https://www.w3.org/TR/sparql11-query/#propertypaths notes: >- If you are authoring schemas in LinkML YAML, the type is referenced with the lower case "sparqlpath".