-- XML schema extracted from ITU-T X.1144 (10/2013)
<?xml version="1.0" encoding="UTF-8"?>
<PolicySet 
  xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  PolicySetId="urn:oasis:names:tc:xacml:3.0:example:policysetid:1"
  Version="1.0"
  PolicyCombiningAlgId=
  "urn:oasis:names:tc:xacml:1.0:policy-combining-algorithm:deny-overrides">
  <Description>
    Example policy set.
  </Description>
  <Target>
    <AnyOf>
      <AllOf>
        <Match
          MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
          <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string"
            >urn:example:med:schema:records</AttributeValue>
          <AttributeDesignator
            MustBePresent="false"
            Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource"
            AttributeId="urn:oasis:names:tc:xacml:2.0:resource:target-namespace"
            DataType="http://www.w3.org/2001/XMLSchema#string"/>
        </Match>
      </AllOf>
    </AnyOf>
  </Target>
  <PolicyIdReference>
    urn:oasis:names:tc:xacml:3.0:example:policyid:3
  </PolicyIdReference>
  <Policy 
    PolicyId="urn:oasis:names:tc:xacml:3.0:example:policyid:2"
    RuleCombiningAlgId=
      "urn:oasis:names:tc:xacml:1.0:rule-combining-algorithm:deny-overrides"
    Version="1.0">
    <Target/>
    <Rule RuleId="urn:oasis:names:tc:xacml:3.0:example:ruleid:1"
      Effect="Permit">
    </Rule>
    <Rule RuleId="urn:oasis:names:tc:xacml:3.0:example:ruleid:2" 
      Effect="Permit">
    </Rule>
    <Rule RuleId="urn:oasis:names:tc:xacml:3.0:example:ruleid:4"
      Effect="Deny">
    </Rule>
  </Policy>
</PolicySet>