<xs:schema targetNamespace="http://ltsc.ieee.org/xsd/LOM"
           xmlns="http://ltsc.ieee.org/xsd/LOM"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           elementFormDefault="qualified"
           version="IEEE LTSC LOM XML 1.0">

   <xs:annotation>
      <xs:documentation>
         This work is licensed under the Creative Commons Attribution-ShareAlike
         License.  To view a copy of this license, see the file license.txt,
         visit http://creativecommons.org/licenses/by-sa/2.0 or send a letter to
         Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
      </xs:documentation>

      <xs:documentation>
         This component schema definition provides global type declarations for the standard
         LOMv1.0 vocabulary tokens for those LOM data elements whose values are taken from
         a Vocabulary data type.

         This component schema defintion defines the stanard vocabulary value 
         declarations as defined in the LOMv1.0 base schema.  These vocabulary
         value declarations are used in conjunction with both vocab/custom.xsd and
         vocab/strict.xsd.
      </xs:documentation>
   </xs:annotation>

   <!-- LOMv1.0 base schema vocabulary source and value declarations -->

   <!-- Source -->
   <xs:simpleType name="sourceValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="LOMv1.0"/>
      </xs:restriction>
   </xs:simpleType>
           

   <!-- 1.7 Structure -->
   <xs:simpleType name="structureValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="atomic"/>
         <xs:enumeration value="collection"/>
         <xs:enumeration value="networked"/>
         <xs:enumeration value="hierarchical"/>
         <xs:enumeration value="linear"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 1.8 Aggregation Level -->
   <xs:simpleType name="aggregationLevelValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="1"/>
         <xs:enumeration value="2"/>
         <xs:enumeration value="3"/>
         <xs:enumeration value="4"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 2.2 Status -->
   <xs:simpleType name="statusValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="draft"/>
         <xs:enumeration value="final"/>
         <xs:enumeration value="revised"/>
         <xs:enumeration value="unavailable"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 2.3.1 Role -->
   <xs:simpleType name="roleValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="author"/>
         <xs:enumeration value="publisher"/>
         <xs:enumeration value="unknown"/>
         <xs:enumeration value="initiator"/>
         <xs:enumeration value="terminator"/>
         <xs:enumeration value="validator"/>
         <xs:enumeration value="editor"/>
         <xs:enumeration value="graphical designer"/>
         <xs:enumeration value="technical implementer"/>
         <xs:enumeration value="content provider"/>
         <xs:enumeration value="technical validator"/>
         <xs:enumeration value="educational validator"/>
         <xs:enumeration value="script writer"/>
         <xs:enumeration value="instructional designer"/>
         <xs:enumeration value="subject matter expert"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 3.2.1 Role -->
   <xs:simpleType name="roleMetaValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="creator"/>
         <xs:enumeration value="validator"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 4.4.1.1 Type -->
   <xs:simpleType name="typeValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="operating system"/>
         <xs:enumeration value="browser"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 4.4.1.2 Name -->
   <xs:simpleType name="nameValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="pc-dos"/>
         <xs:enumeration value="ms-windows"/>
         <xs:enumeration value="macos"/>
         <xs:enumeration value="unix"/>
         <xs:enumeration value="multi-os"/>
         <xs:enumeration value="none"/>
         <xs:enumeration value="any"/>
         <xs:enumeration value="netscape communicator"/>
         <xs:enumeration value="ms-internet explorer"/>
         <xs:enumeration value="opera"/>
         <xs:enumeration value="amaya"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 5.1 Interactivity Type -->
   <xs:simpleType name="interactivityTypeValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="active"/>
         <xs:enumeration value="expositive"/>
         <xs:enumeration value="mixed"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 5.2 Learning Resource Type -->
   <xs:simpleType name="learningResourceTypeValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="exercise"/>
         <xs:enumeration value="simulation"/>
         <xs:enumeration value="questionnaire"/>
         <xs:enumeration value="diagram"/>
         <xs:enumeration value="figure"/>
         <xs:enumeration value="graph"/>
         <xs:enumeration value="index"/>
         <xs:enumeration value="slide"/>
         <xs:enumeration value="table"/>
         <xs:enumeration value="narrative text"/>
         <xs:enumeration value="exam"/>
         <xs:enumeration value="experiment"/>
         <xs:enumeration value="problem statement"/>
         <xs:enumeration value="self assessment"/>
         <xs:enumeration value="lecture"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 5.3 Interactivity Level -->
   <xs:simpleType name="interactivityLevelValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="very low"/>
         <xs:enumeration value="low"/>
         <xs:enumeration value="medium"/>
         <xs:enumeration value="high"/>
         <xs:enumeration value="very high"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 5.4 Semantic Density -->
   <xs:simpleType name="semanticDensityValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="very low"/>
         <xs:enumeration value="low"/>
         <xs:enumeration value="medium"/>
         <xs:enumeration value="high"/>
         <xs:enumeration value="very high"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 5.5 Intended End User Role -->
   <xs:simpleType name="intendedEndUserRoleValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="teacher"/>
         <xs:enumeration value="author"/>
         <xs:enumeration value="learner"/>
         <xs:enumeration value="manager"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 5.6 Context -->
   <xs:simpleType name="contextValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="school"/>
         <xs:enumeration value="higher education"/>
         <xs:enumeration value="training"/>
         <xs:enumeration value="other"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 5.8 Difficulty -->
   <xs:simpleType name="difficultyValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="very easy"/>
         <xs:enumeration value="easy"/>
         <xs:enumeration value="medium"/>
         <xs:enumeration value="difficult"/>
         <xs:enumeration value="very difficult"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 6.1 Cost -->
   <xs:simpleType name="costValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="yes"/>
         <xs:enumeration value="no"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 6.2 Copyright and Other Restrictions -->
   <xs:simpleType name="copyrightAndOtherRestrictionsValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="yes"/>
         <xs:enumeration value="no"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 7.1 Kind -->
   <xs:simpleType name="kindValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="ispartof"/>
         <xs:enumeration value="haspart"/>
         <xs:enumeration value="isversionof"/>
         <xs:enumeration value="hasversion"/>
         <xs:enumeration value="isformatof"/>
         <xs:enumeration value="hasformat"/>
         <xs:enumeration value="references"/>
         <xs:enumeration value="isreferencedby"/>
         <xs:enumeration value="isbasedon"/>
         <xs:enumeration value="isbasisfor"/>
         <xs:enumeration value="requires"/>
         <xs:enumeration value="isrequiredby"/>
      </xs:restriction>
   </xs:simpleType>

   <!-- 9.1 Purpose -->
   <xs:simpleType name="purposeValues">
      <xs:restriction base="xs:token">
         <xs:enumeration value="discipline"/>
         <xs:enumeration value="idea"/>
         <xs:enumeration value="prerequisite"/>
         <xs:enumeration value="educational objective"/>
         <xs:enumeration value="accessibility restrictions"/>
         <xs:enumeration value="educational level"/>
         <xs:enumeration value="skill level"/>
         <xs:enumeration value="security level"/>
         <xs:enumeration value="competency"/>
      </xs:restriction>
   </xs:simpleType>

</xs:schema>
