The ovf-envelope.xsd Schema

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
  targetNamespace="/var/opt/SUNWldom/envelope"
  xmlns:ovf="/var/opt/SUNWldom/envelope"
  xmlns:xs="http://www.w3.org/2001/XMLSchema">
 
  <!-- Include virtual hardware schema -->
  <xs:include schemaLocation="./ovf-section.xsd"/>
  <xs:include schemaLocation="./cim-virtualhardware.xsd"/>
  <xs:include schemaLocation="./ovf-core.xsd"/>
 
  <!-- Root element of a OVF package-->
  <xs:element name="Envelope" type="ovf:Envelope_Type"/>
 
  <xs:complexType name="Envelope_Type">
    <xs:sequence>
      <!--- References to all external files -->
      <xs:element name="References" type="ovf:References_Type"/>
 
      <!-- Package level meta-data -->
      <xs:element name="Section" type="ovf:Section_Type" minOccurs="0" maxOccurs="unbounded"/>
 
      <!-- Content. A virtual machine or a vService -->
      <xs:element name="Content" type="ovf:Entity_Type" minOccurs="0" maxOccurs="unbounded"/>
 
      <xs:any namespace="##targetNamespace" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
      <xs:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
    </xs:sequence>
    <xs:attribute name="signed" type="xs:boolean" use="optional"/>
    <xs:attribute name="manifest" type="xs:boolean" use="optional"/>
    <xs:anyAttribute namespace="##any"/>
  </xs:complexType>
 
  <xs:complexType name="References_Type">
    <xs:sequence>
      <xs:element name="File" type="ovf:File_Type" minOccurs="0" maxOccurs="unbounded"/>
      <xs:any namespace="##targetNamespace" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
      <xs:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
    </xs:sequence>
<xs:anyAttribute namespace="##any"/>
  </xs:complexType>
 
  <!--Type for an external reference to a resource -->
  <xs:complexType name="File_Type">
    <xs:sequence>
      <xs:any namespace="##targetNamespace" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
      <xs:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
    </xs:sequence>
 
    <!-- Reference key used in other parts of the package -->
    <xs:attribute name="id" type="xs:string" use="required"/>
    <!-- Same as using a single part element -->
    <xs:attribute name="href" type="xs:string" use="required"/>
    <!-- Size in bytes of the files (if known) -->
    <xs:attribute name="size" type="xs:integer" use="optional"/>
    <!-- Estimated size in bytes of the files (if a good guess is known) -->
    <xs:attribute name="estSize" type="xs:integer" use="optional"/>
    <!-- Compression type (gzip or bzip2) -->
    <xs:attribute name="compression" type="xs:string" use="optional"/>
    <!-- Chunk size (except of last chunk) -->
    <xs:attribute name="chunkSize" type="xs:long" use="optional"/>
 
    <xs:anyAttribute namespace="##any"/>
  </xs:complexType>
 
  <!-- Base class for an entity -->
  <xs:complexType name="Entity_Type" abstract="true">
    <xs:sequence>
      <xs:element name="Info" type="ovf:Info_Type" minOccurs="0" maxOccurs="unbounded"/>
      <xs:element name="Section" type="ovf:Section_Type" minOccurs="0" maxOccurs="unbounded"/>
    </xs:sequence>
    <xs:attribute name="id" type="xs:string" use="required"/>
  </xs:complexType>
 
  <!-- A Virtual Machine Entity -->
  <xs:complexType name="VirtualSystem_Type">
<xs:complexContent>
      <xs:extension base="ovf:Entity_Type"> </xs:extension>
    </xs:complexContent>
  </xs:complexType>
 
  <!-- A Composite Service -->
  <xs:complexType name="VirtualSystemCollection_Type">
    <xs:complexContent>
      <xs:extension base="ovf:Entity_Type">
       <xs:sequence>
        <xs:element name="Content" type="ovf:Entity_Type" minOccurs="0" maxOccurs="unbounded"/>
        <xs:any namespace="##targetNamespace" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
        <xs:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
</xs:schema>