# Type: Double _A real number that conforms to the xsd:double specification_ URI: [xsd:double](http://www.w3.org/2001/XMLSchema#double) * [base](https://w3id.org/linkml/base): float * [uri](https://w3id.org/linkml/uri): xsd:double ## Identifier and Mapping Information ### Schema Source * from schema: https://w3id.org/oak/mapping-rules-datamodel ## Mappings | Mapping Type | Mapped Value | | --- | --- | | self | xsd:double | | native | mappingrules:double | | close | schema:Float |