IVOA-v1.0.vodsl

model ivoa (1.0) "This is the main reference data model containing primitive types used in other data models."
     
    primitive Unit  "Must conform to definition of unit in VOUnit spec."
    primitive anyURI  "Represents a URI in the same way as the datatype of the same nam in XML Schema is used."
    primitive boolean  "The standard boolean, having values true or false."
    primitive complex  "Represents a complex number, consisting of a real and imaginary component, both of which are reals. Note that in many contexts there is no native mapping for this type and it must be treated with a custom mapping."
    primitive datetime  "Represents a moment in time using a date+timestamp. "
    primitive integer  "An integer number (from Z)."
    primitive nonnegativeInteger  "An integer number from N, therefore greater than or equal to 0."
    primitive rational  "A rational number from Q, represented by two integers, a numerator and a denominator. A native mapping to a serialisation context does in general not exists."
    primitive real  "A real number (from R)."
    primitive string  "A string, represented as an array of characters treated as a single, primitive value. Ala Java, a string can not be updated, that is any update leads to a different string. However in contrast to Java we assume that two strings that are identical in all their constitutent characters are the same.
I.e. string has value type semantics."
dtype IntegerQuantity  -> Quantity "An integer number with a unit. Examples of such units that can be used for attributes are bit/byte/kiloByte etc."
  {   
        value: integer   "The integer value of this IntegerQuantity.";
  }

abstract dtype Quantity  "Meant to represent the value of a numerical physical quantity.  
Can be mapped in VOTables to FIELDrefs and PARAM(ref)s, in which case the @unit attribute of those VOTable elements is assumed to be mapped to the attribute on the Quantity.
Ths is only allowed for these predefined ivoa types."
  {   
        unit: Unit  @?   "The unit of this  quantity.";
  }

dtype RealQuantity  -> Quantity "A real value with a unit."
  {   
        value: real   "The real value of this quantity";
  }