A union datatype can embed one or more elements : union « XML Schema « XML






  1. XML
  2. XML Schema
  3. union

A union datatype can embed one or more elements


<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://www.java2s.com" xmlns="http://www.java2s.com"
  elementFormDefault="qualified">

  <xs:simpleType name="myIntegerUnion">
    <xs:union>
      <xs:simpleType>
        <xs:restriction base="xs:integer" />
      </xs:simpleType>
      <xs:simpleType>
        <xs:restriction base="xs:NMTOKEN">
          <xs:enumeration value="undefined" />
        </xs:restriction>
      </xs:simpleType>
    </xs:union>
  </xs:simpleType>
</xs:schema>








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1.A union datatype by reference to existing types
2.The order between derivation by list and derivation by union depends on the result to achieve
3.union types with restriction
4.Union anonymous simple types
5.union with memberTypes