ivoa version 1.0 2018-05-05 Introduction This is the main reference data model containing primitive types used in other data models. Authors Overview diagram The whole model is represented in a model diagram below GVmapivoa data modelivoa:Unit <<primitive type>> Unit ivoa:string <<primitive type>> string ivoa:Unit->ivoa:stringivoa:anyURI <<primitive type>> anyURI ivoa:anyURI->ivoa:stringivoa:boolean <<primitive type>> boolean ivoa:complex <<primitive type>> complex ivoa:datetime <<primitive type>> datetime ivoa:integer <<primitive type>> integer ivoa:nonnegativeInteger <<primitive type>> nonnegativeInteger ivoa:rational <<primitive type>> rational ivoa:real <<primitive type>> real ivoa:IntegerQuantity <<datatype>> IntegerQuantity +value : ivoa:integer ivoa:Quantity <<datatype>> Quantity +unit : ivoa:Unit ivoa:IntegerQuantity->ivoa:Quantityivoa:RealQuantity <<datatype>> RealQuantity +value : ivoa:real ivoa:RealQuantity->ivoa:Quantity Primitives Unit anyURI boolean complex datetime integer nonnegativeInteger rational real string DataTypes IntegerQuantity Quantity RealQuantity