<xs:schema
   xmlns:xs="http://www.w3.org/2001/XMLSchema"
   xmlns:mt="http://openuri.org/mytest"
   targetNamespace="http://openuri.org/mytest"
   elementFormDefault="qualified"
   attributeFormDefault="unqualified" >

  <xs:complexType name="person">
    <xs:sequence>
      <xs:element name="firstname" type="xs:string"/>
      <xs:choice maxOccurs="unbounded">
        <xs:element name="number">
           <xs:simpleType>
             <xs:restriction base="xs:integer">
               <xs:minInclusive value="1"/>
               <xs:maxInclusive value="1000"/>
             </xs:restriction>
           </xs:simpleType>
        </xs:element>
        <xs:element name="birthday" type="xs:date"/>
      </xs:choice>
      <xs:element name="hex" type="xs:hexBinary"/>
      <xs:element name="base64" type="xs:base64Binary"/>
    </xs:sequence>
    <xs:attribute name="gender">
      <xs:simpleType>
        <xs:restriction base="xs:NMTOKEN">
          <xs:enumeration value="male"/>
          <xs:enumeration value="female"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="hexAtt">
      <xs:simpleType>
        <xs:restriction base="xs:hexBinary">
          <xs:pattern value="([45][0-9A-F])*"/>
       </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="base64Att">
      <xs:simpleType>
        <xs:restriction base="xs:base64Binary">
          <xs:whiteSpace value="collapse"/>
          <xs:enumeration value="VGhpcyBzdHJpbmcgaXMgYmFzZTY0QmluYXJ5IGVuY29kZWQh"/>
       </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:complexType>

  <xs:element name="customer" type="mt:person"/>

  <xs:element name="employee">
    <xs:complexType>
      <xs:complexContent>
        <xs:extension base="mt:person">
          <xs:sequence>
            <xs:element name="eid" type="xs:int"/>
          </xs:sequence>
        </xs:extension>
      </xs:complexContent>
    </xs:complexType>
  </xs:element>

</xs:schema>