<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://www.w3.org/1999/xlink" xmlns:docbook="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <xs:import namespace="http://docbook.org/ns/docbook" schemaLocation="assembly.xsd"/>
  <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="xml.xsd"/>
  <xs:attribute name="href"/>
  <xs:attributeGroup name="type">
    <xs:attribute name="type" use="required" form="qualified">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="simple"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:attributeGroup>
  <xs:attribute name="role"/>
  <xs:attribute name="arcrole"/>
  <xs:attribute name="title"/>
  <xs:attribute name="from" type="xs:NMTOKEN"/>
  <xs:attribute name="label" type="xs:NMTOKEN"/>
  <xs:attribute name="to" type="xs:NMTOKEN"/>
  <xs:attribute name="show" type="docbook:db.xlink.show.enumeration"/>
  <xs:attribute name="actuate" type="docbook:db.xlink.actuate.enumeration"/>
  <xs:attributeGroup name="type1">
    <xs:attribute name="type" use="required" form="qualified">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="extended"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:attributeGroup>
  <xs:attributeGroup name="type2">
    <xs:attribute name="type" use="required" form="qualified">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="locator"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:attributeGroup>
  <xs:attributeGroup name="type3">
    <xs:attribute name="type" use="required" form="qualified">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="arc"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:attributeGroup>
</xs:schema>

