-- XSD schema extracted from ITU-T H.761 (06/2011)

<!--
XML Schema for the NCL modules

This is NCL
Copyright: 2000-2005 LABORATORIO TELEMIDIA, All Rights Reserved.
See http://www.telemidia.puc-rio.br

Public URI: http://www.ncl.org.br/NCL3.0/modules/NCL30DescriptorControl.xsd
Author: TeleMidia Laboratory
Revision: 19/06/2006

Schema for the NCL DescriptorControl module namespace.
-->
<schema xmlns="http://www.w3.org/2001/XMLSchema"
  xmlns:descriptorControl="http://www.ncl.org.br/NCL3.0/DescriptorControl"
  targetNamespace="http://www.ncl.org.br/NCL3.0/DescriptorControl"
  elementFormDefault="qualified" attributeFormDefault="unqualified" >


  <complexType name="defaultDescriptorPrototype">
    <attribute name="descriptor" type="IDREF" use="required" />
  </complexType>

  <!-- define the descriptor switch element prototype -->
  <complexType name="descriptorSwitchPrototype">
    <choice>
    <element ref="descriptorControl:defaultDescriptor" minOccurs="0" maxOccurs="1"/>
    </choice>
    <attribute name="id" type="ID" use="required"/> 
  </complexType>


  <!-- declare global elements in this module -->
  <element name="defaultDescriptor" type="descriptorControl:defaultDescriptorPrototype"/>
  <element name="descriptorSwitch" type="descriptorControl:descriptorSwitchPrototype"/>    

</schema>