<?xml version="1.0" encoding="UTF-8"?>
   <xs:schema targetNamespace="urn:ietf:params:xml:ns:pidf:data-model"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns="urn:ietf:params:xml:ns:pidf:data-model"
    elementFormDefault="qualified" attributeFormDefault="unqualified">
    <xs:include schemaLocation="common-schema.xsd"/>
    <xs:element name="deviceID" type="deviceID_t">
     <xs:annotation>
      <xs:documentation>Device ID, a URN</xs:documentation>
     </xs:annotation>
    </xs:element>
    <xs:element name="device">
     <xs:annotation>
      <xs:documentation>Contains information about the
       device</xs:documentation>
     </xs:annotation>
     <xs:complexType>
      <xs:sequence>
       <xs:any namespace="##other" processContents="lax"
        minOccurs="0" maxOccurs="unbounded"/>
       <xs:element ref="deviceID"/>
       <xs:element name="note" type="Note_t" minOccurs="0"
        maxOccurs="unbounded"/>
       <xs:element name="timestamp" type="Timestamp_t" minOccurs="0"/>
      </xs:sequence>
      <xs:attribute name="id" type="xs:ID" use="required"/>
     </xs:complexType>
    </xs:element>
    <xs:element name="person">
     <xs:annotation>
      <xs:documentation>Contains information about the human
       user</xs:documentation>
     </xs:annotation>
     <xs:complexType>
      <xs:sequence>
       <xs:any namespace="##other" processContents="lax"
        minOccurs="0" maxOccurs="unbounded">
        <xs:annotation>
         <xs:documentation>Characteristic and status
          information</xs:documentation>
        </xs:annotation>
       </xs:any>
       <xs:element name="note" type="Note_t" minOccurs="0"
        maxOccurs="unbounded"/>
       <xs:element name="timestamp" type="Timestamp_t" minOccurs="0"/>
      </xs:sequence>
      <xs:attribute name="id" type="xs:ID" use="required"/>
     </xs:complexType>
    </xs:element>
   </xs:schema>

