refactor of prov.xsd into separate schemas which are all included in prov.xsd
authorStephan Zednik <zednis@rpi.edu>
Wed, 23 Jan 2013 13:04:02 -0700
changeset 5433 ddc3e7cd2e94
parent 5432 94e2d6d571a5
child 5434 e127aac25454
refactor of prov.xsd into separate schemas which are all included in prov.xsd
examples/eg-40-xml-examples-by-term/xml/Alternate_43.xml
xml/schema/extensions/prov-dictionary.xsd
xml/schema/extensions/prov-links.xsd
xml/schema/prov-core.xsd
xml/schema/prov.alt.xsd
xml/schema/prov.xsd
--- a/examples/eg-40-xml-examples-by-term/xml/Alternate_43.xml	Sun Jan 20 11:38:03 2013 -0500
+++ b/examples/eg-40-xml-examples-by-term/xml/Alternate_43.xml	Wed Jan 23 13:04:02 2013 -0700
@@ -12,7 +12,6 @@
   <prov:entity prov:id="bbc:science-environment-17526723">
     <prov:type xsi:type="xsd:string">a news item for desktop</prov:type>
   </prov:entity>
-
   <prov:entity prov:id="bbcmobile:science-environment-17526723">
     <prov:type xsi:type="xsd:string">a news item for mobile devices</prov:type>
   </prov:entity>
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xml/schema/extensions/prov-dictionary.xsd	Wed Jan 23 13:04:02 2013 -0700
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
+	targetNamespace="http://www.w3.org/ns/prov#" xmlns:prov="http://www.w3.org/ns/prov#"
+	elementFormDefault="qualified">
+	
+	<xs:include schemaLocation="../prov-core.xsd" />
+	
+	<xs:complexType name="Dictionary">
+	    <xs:complexContent>
+		  <xs:extension base="prov:Collection">
+		  </xs:extension>
+		</xs:complexContent>
+	</xs:complexType>
+
+	<xs:complexType name="DictionaryMembership">
+		<xs:sequence>
+			<xs:element name="dictionary" type="prov:IDRef" />
+			<xs:element name="member" type="prov:IDRef" />
+			<xs:element name="key" type="xs:string" />
+		</xs:sequence>
+	</xs:complexType>
+	
+	<xs:element name="dictionary" type="prov:Dictionary" substitutionGroup="prov:abstractElement" />
+	
+</xs:schema>
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xml/schema/extensions/prov-links.xsd	Wed Jan 23 13:04:02 2013 -0700
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
+	targetNamespace="http://www.w3.org/ns/prov#" xmlns:prov="http://www.w3.org/ns/prov#"
+	elementFormDefault="qualified">
+	
+	<xs:include schemaLocation="../prov-core.xsd" />
+	
+	<xs:complexType name="Mention">
+		<xs:sequence>
+			<xs:element name="specificEntity" type="prov:IDRef" />
+			<xs:element name="generalEntity" type="prov:IDRef" />
+			<xs:element name="bundle" type="prov:IDRef" />
+		</xs:sequence>
+	</xs:complexType>
+	
+	<xs:element name="mentionOf" type="prov:Mention" substitutionGroup="prov:abstractElement" />
+	
+</xs:schema>
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xml/schema/prov-core.xsd	Wed Jan 23 13:04:02 2013 -0700
@@ -0,0 +1,464 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- 
+     In PROV-DM, all ids are qualified names, specified as prov:QualifiedName in PROV-N.
+     In this schema, all ids are instead defined as xsd:QNames. 
+  -->
+
+
+<xs:schema targetNamespace="http://www.w3.org/ns/prov#"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           xmlns:prov="http://www.w3.org/ns/prov#"
+           xmlns:cu="http://www.w3.org/1999/xhtml/datatypes/"
+           xmlns:xml="http://www.w3.org/XML/1998/namespace"
+           elementFormDefault="qualified"
+           attributeFormDefault="unqualified">
+
+
+
+  <xs:import namespace="http://www.w3.org/1999/xhtml/datatypes/" />
+  <xs:import namespace="http://www.w3.org/XML/1998/namespace" 
+             schemaLocation="http://www.w3.org/2001/xml.xsd"/>
+
+  <!-- Component 1 -->
+  
+  <xs:complexType name="Entity">
+    <xs:sequence>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:location"/>
+        <xs:element ref="prov:value"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>  
+
+  <xs:complexType name="Activity">
+    <xs:sequence>
+      <xs:element name="startTime" type="xs:dateTime" minOccurs="0"/> 
+      <xs:element name="endTime" type="xs:dateTime" minOccurs="0"/> 
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:location"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Generation">
+    <xs:sequence>
+      <xs:element name="entity" type="prov:IDRef"/>
+      <xs:element name="activity" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:location"/>
+        <xs:element ref="prov:role"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Usage">
+    <xs:sequence>
+      <xs:element name="activity" type="prov:IDRef"/>
+      <xs:element name="entity" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:location"/>
+        <xs:element ref="prov:role"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Communication">
+    <xs:sequence>
+      <xs:element name="informed" type="prov:IDRef"/>
+      <xs:element name="informant" type="prov:IDRef"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Start">
+    <xs:sequence>
+      <xs:element name="activity" type="prov:IDRef"/>
+      <xs:element name="trigger" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="starter" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:location"/>
+        <xs:element ref="prov:role"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="End">
+    <xs:sequence>
+      <xs:element name="activity" type="prov:IDRef"/>
+      <xs:element name="trigger" type="prov:IDRef"  minOccurs="0"/>
+      <xs:element name="ender" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:location"/>
+        <xs:element ref="prov:role"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Invalidation">
+    <xs:sequence>
+      <xs:element name="entity" type="prov:IDRef"/>
+      <xs:element name="activity" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:location"/>
+        <xs:element ref="prov:role"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <!-- Component 2 -->
+  
+  <xs:complexType name="Derivation">
+    <xs:sequence>
+      <xs:element name="generatedEntity" type="prov:IDRef"/>
+      <xs:element name="usedEntity" type="prov:IDRef"/>
+      <xs:element name="activity" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="generation" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="usage" type="prov:IDRef" minOccurs="0"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Revision">
+	<xs:complexContent>
+      <xs:extension base="prov:Derivation">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <xs:complexType name="Quotation">
+    <xs:complexContent>
+	  <xs:extension base="prov:Derivation">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <xs:complexType name="PrimarySource">
+    <xs:complexContent>
+	  <xs:extension base="prov:Derivation">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <!-- Component 3 -->
+  
+  <xs:complexType name="Agent">
+    <xs:sequence>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:location"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Person">
+    <xs:complexContent>
+	  <xs:extension base="prov:Agent">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <xs:complexType name="Organization">
+    <xs:complexContent>
+	  <xs:extension base="prov:Agent">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <xs:complexType name="SoftwareAgent">
+    <xs:complexContent>
+	  <xs:extension base="prov:Agent">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <xs:complexType name="Attribution">
+    <xs:sequence>
+      <xs:element name="entity" type="prov:IDRef"/>
+      <xs:element name="agent" type="prov:IDRef"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Association">
+    <xs:sequence>
+      <xs:element name="activity" type="prov:IDRef"/>
+      <xs:element name="agent" type="prov:IDRef" minOccurs="0"/>
+      <xs:element name="plan" type="prov:IDRef" minOccurs="0"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:role"/>
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Delegation">
+    <xs:sequence>
+      <xs:element name="delegate" type="prov:IDRef"/>
+      <xs:element name="responsible" type="prov:IDRef"/>
+      <xs:element name="activity" type="prov:IDRef" minOccurs="0"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <xs:complexType name="Influence">
+    <xs:sequence>
+      <xs:element name="influencee" type="prov:IDRef"/>
+      <xs:element name="influencer" type="prov:IDRef"/>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:label"/>
+        <xs:element ref="prov:type"/>
+        <xs:any namespace="##other"/>
+      </xs:choice>
+    </xs:sequence>
+    <xs:attribute ref="prov:id"/>
+  </xs:complexType>
+
+  <!-- Component 4 -->
+
+  <xs:complexType name="Bundle">
+	<xs:complexContent>
+	  <xs:extension base="prov:Entity">
+		<xs:sequence>
+	      <xs:group ref="prov:documentElements"/>
+	    </xs:sequence>
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <!-- Component 5 -->
+
+  <xs:complexType name="Specialization">
+    <xs:sequence>
+      <xs:element name="specificEntity" type="prov:IDRef"/>
+      <xs:element name="generalEntity" type="prov:IDRef"/>
+    </xs:sequence>
+  </xs:complexType>
+
+  <xs:complexType name="Alternate">
+    <xs:sequence>
+      <xs:element name="alternate1" type="prov:IDRef"/>
+      <xs:element name="alternate2" type="prov:IDRef"/>
+    </xs:sequence>
+  </xs:complexType>
+  
+  <!-- Component 6 -->
+
+  <xs:complexType name="Collection">
+    <xs:complexContent>
+	  <xs:extension base="prov:Entity">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <xs:complexType name="EmptyCollection">
+    <xs:complexContent>
+	  <xs:extension base="prov:Collection">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <xs:complexType name="Membership">
+    <xs:sequence>
+      <xs:element name="collection" type="prov:IDRef"/>
+      <xs:element name="entity" type="prov:IDRef" maxOccurs="unbounded"/>
+    </xs:sequence>
+  </xs:complexType>
+
+  <xs:complexType name="Plan">
+    <xs:complexContent>
+	  <xs:extension base="prov:Entity">
+	  </xs:extension>
+	</xs:complexContent>
+  </xs:complexType>
+
+  <xs:complexType name="InternationalizedString">
+    <xs:simpleContent>
+      <xs:extension base="xs:string">
+        <xs:attribute ref="xml:lang" use="optional"/>
+      </xs:extension>
+    </xs:simpleContent>
+  </xs:complexType>    
+
+
+   <!--
+       Typed literals are encoded by means
+       of xsi:type that represent the prov:datatype.
+
+       -->
+  
+  <xs:element name="label" type="prov:InternationalizedString"/>
+  <xs:element name="role" type="xs:anySimpleType"/>
+  <xs:element name="type" type="xs:anySimpleType"/>
+  <xs:element name="location" type="xs:anySimpleType"/>
+  <xs:element name="value" type="xs:anySimpleType"/>
+
+  <xs:attribute name="id" type="xs:anyURI"/>
+  <xs:attribute name="ref" type="xs:anyURI"/>
+
+  <xs:complexType name="IDRef">
+    <xs:attribute ref="prov:ref" use="required" />
+  </xs:complexType>
+
+  <!--
+     top-level definition of elements following the salami slice XSD design pattern
+     to encourage integration within existing non-prov XML documents.
+  -->
+
+  <!-- Component 1 elements -->
+
+  <xs:element name="entity"               type="prov:Entity"/>
+  <xs:element name="activity"             type="prov:Activity"/>
+  <xs:element name="wasGeneratedBy"       type="prov:Generation"/>
+  <xs:element name="used"                 type="prov:Usage"/>
+  <xs:element name="wasInformedBy"        type="prov:Communication"/>
+  <xs:element name="wasStartedBy"         type="prov:Start"/>
+  <xs:element name="wasEndedBy"           type="prov:End"/>
+  <xs:element name="wasInvalidatedBy"     type="prov:Invalidation"/>
+
+  <!-- Component 2 elements -->
+
+  <xs:element name="wasDerivedFrom"       type="prov:Derivation"/>
+  <xs:element name="wasRevisionOf"        type="prov:Revision"/>
+  <xs:element name="wasQuotedFrom"        type="prov:Quotation"/>
+  <xs:element name="hadPrimarySource"     type="prov:PrimarySource"/>
+
+  <!-- Component 3 elements -->
+
+  <xs:element name="agent"                type="prov:Agent"/>
+  <xs:element name="person"               type="prov:Person"/>
+  <xs:element name="organization"         type="prov:Organization"/>
+  <xs:element name="softwareAgent"        type="prov:SoftwareAgent"/>
+  <xs:element name="wasAttributedTo"      type="prov:Attribution"/>
+  <xs:element name="wasAssociatedWith"    type="prov:Association"/>
+  <xs:element name="actedOnBehalfOf"      type="prov:Delegation"/>
+  <xs:element name="wasInfluencedBy"      type="prov:Influence"/>
+  
+  <!-- Component 5 elements -->
+
+  <xs:element name="bundle"               type="prov:Bundle"/>
+  <xs:element name="specializationOf"     type="prov:Specialization"/>
+  <xs:element name="alternateOf"          type="prov:Alternate"/>
+
+  <!-- Component 6 elements -->
+
+  <xs:element name="hadMember"            type="prov:Membership"/>
+  <xs:element name="collection"           type="prov:Collection"/>
+  <xs:element name="emptyCollection"      type="prov:EmptyCollection"/>
+
+  <!-- Component 7 elements -->
+
+  <xs:element name="plan"                 type="prov:Plan"/>
+
+  <!-- document elements -->
+
+  <xs:group name="documentElements">
+    <xs:sequence>
+      <xs:choice minOccurs="0" maxOccurs="unbounded">
+        <xs:element ref="prov:entity"/>
+        <xs:element ref="prov:activity"/>
+        <xs:element ref="prov:wasGeneratedBy"/>
+        <xs:element ref="prov:used"/>
+        <xs:element ref="prov:wasInformedBy"/>
+        <xs:element ref="prov:wasStartedBy"/>
+        <xs:element ref="prov:wasEndedBy"/>
+        <xs:element ref="prov:wasInvalidatedBy"/>
+        <xs:element ref="prov:wasDerivedFrom"/>
+        <xs:element ref="prov:wasRevisionOf"/>
+        <xs:element ref="prov:wasQuotedFrom"/>
+        <xs:element ref="prov:hadPrimarySource"/>
+        <xs:element ref="prov:agent"/>
+        <xs:element ref="prov:person"/>
+        <xs:element ref="prov:organization"/>
+        <xs:element ref="prov:softwareAgent"/>
+        <xs:element ref="prov:wasAttributedTo"/>
+        <xs:element ref="prov:wasAssociatedWith"/>
+        <xs:element ref="prov:actedOnBehalfOf"/>
+        <xs:element ref="prov:wasInfluencedBy"/>
+        <xs:element ref="prov:bundle"/>
+        <xs:element ref="prov:specializationOf"/>
+        <xs:element ref="prov:alternateOf"/>
+	    <xs:element ref="prov:collection"/>
+	    <xs:element ref="prov:emptyCollection"/>
+        <xs:element ref="prov:hadMember"/>
+        <xs:element ref="prov:plan"/>
+		<xs:any namespace="##other"/>
+      </xs:choice>
+      <xs:element ref="prov:abstractElement" minOccurs="0" maxOccurs="unbounded" />
+    </xs:sequence>
+  </xs:group>
+
+  <xs:element name="document" type="prov:Document" />
+  <xs:complexType name="Document">
+    <xs:sequence>
+      <xs:choice maxOccurs="unbounded">
+        <xs:group ref="prov:documentElements"/>
+        <xs:element ref="prov:bundle"/>
+      </xs:choice>
+    </xs:sequence>
+  </xs:complexType>
+
+  <!-- abstract element used by extensions -->
+
+  <xs:element name="abstractElement" abstract="true" />
+
+</xs:schema>
--- a/xml/schema/prov.alt.xsd	Sun Jan 20 11:38:03 2013 -0500
+++ b/xml/schema/prov.alt.xsd	Wed Jan 23 13:04:02 2013 -0700
@@ -1,19 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!-- 
-     *warning*
-     transformation of the opm opmx schema into prov compatible.
-     purely tentative at this stage. 
-
      In PROV-DM, all ids are qualified names, specified as prov:QualifiedName in PROV-N.
      In this schema, all ids are instead defined as xsd:QNames. 
-
-
-     ISSUES to tackle:
-     - How do we support internationalization? 
-       There is explicit support for internationalization for label.
-       How can we support xml:lang for any string, as per prov-dm?
-
   -->
 
 
@@ -48,8 +37,8 @@
 
   <xs:complexType name="Activity">
     <xs:sequence>
-      <xs:element name="startTime"    type="xs:dateTime" minOccurs="0"/> 
-      <xs:element name="endTime"      type="xs:dateTime" minOccurs="0"/> 
+      <xs:element name="startTime" type="xs:dateTime" minOccurs="0"/> 
+      <xs:element name="endTime" type="xs:dateTime" minOccurs="0"/> 
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:location"/>
         <xs:element ref="prov:label"/>
@@ -62,9 +51,9 @@
 
   <xs:complexType name="Generation">
     <xs:sequence>
-      <xs:element name="entity"   type="prov:EntityRef"/>
+      <xs:element name="entity" type="prov:EntityRef"/>
       <xs:element name="activity" type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="time"     type="xs:dateTime" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:location"/>
         <xs:element ref="prov:role"/>
@@ -79,8 +68,8 @@
   <xs:complexType name="Usage">
     <xs:sequence>
       <xs:element name="activity" type="prov:ActivityRef"/>
-      <xs:element name="entity"   type="prov:EntityRef" minOccurs="0"/>
-      <xs:element name="time"     type="xs:dateTime" minOccurs="0"/>
+      <xs:element name="entity" type="prov:EntityRef" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:location"/>
         <xs:element ref="prov:role"/>
@@ -94,7 +83,7 @@
 
   <xs:complexType name="Communication">
     <xs:sequence>
-      <xs:element name="informed"  type="prov:ActivityRef"/>
+      <xs:element name="informed" type="prov:ActivityRef"/>
       <xs:element name="informant" type="prov:ActivityRef"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:label"/>
@@ -108,9 +97,9 @@
   <xs:complexType name="Start">
     <xs:sequence>
       <xs:element name="activity" type="prov:ActivityRef"/>
-      <xs:element name="trigger"  type="prov:EntityRef" minOccurs="0"/>
-      <xs:element name="starter"  type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="time"     type="xs:dateTime" minOccurs="0"/>
+      <xs:element name="trigger" type="prov:EntityRef" minOccurs="0"/>
+      <xs:element name="starter" type="prov:ActivityRef" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:location"/>
         <xs:element ref="prov:role"/>
@@ -125,9 +114,9 @@
   <xs:complexType name="End">
     <xs:sequence>
       <xs:element name="activity" type="prov:ActivityRef"/>
-      <xs:element name="trigger"  type="prov:EntityRef"  minOccurs="0"/>
-      <xs:element name="ender"    type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="time"     type="xs:dateTime" minOccurs="0"/>
+      <xs:element name="trigger" type="prov:EntityRef"  minOccurs="0"/>
+      <xs:element name="ender" type="prov:ActivityRef" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:location"/>
         <xs:element ref="prov:role"/>
@@ -141,9 +130,9 @@
 
   <xs:complexType name="Invalidation">
     <xs:sequence>
-      <xs:element name="entity"   type="prov:EntityRef"/>
+      <xs:element name="entity" type="prov:EntityRef"/>
       <xs:element name="activity" type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="time"     type="xs:dateTime" minOccurs="0"/>
+      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:location"/>
         <xs:element ref="prov:role"/>
@@ -159,11 +148,11 @@
   
   <xs:complexType name="Derivation">
     <xs:sequence>
-      <xs:element name="generatedEntity"  type="prov:EntityRef"/>
-      <xs:element name="usedEntity"       type="prov:EntityRef"/>
-      <xs:element name="activity"         type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="generation"       type="prov:GenerationRef" minOccurs="0"/>
-      <xs:element name="usage"            type="prov:UsageRef" minOccurs="0"/>
+      <xs:element name="generatedEntity" type="prov:EntityRef"/>
+      <xs:element name="usedEntity" type="prov:EntityRef"/>
+      <xs:element name="activity" type="prov:ActivityRef" minOccurs="0"/>
+      <xs:element name="generation" type="prov:GenerationRef" minOccurs="0"/>
+      <xs:element name="usage" type="prov:UsageRef" minOccurs="0"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:label"/>
         <xs:element ref="prov:type"/>
@@ -176,7 +165,6 @@
   <xs:complexType name="Revision">
 	<xs:complexContent>
       <xs:extension base="prov:Derivation">
-	    <!-- add any additional properties here -->
 	  </xs:extension>
 	</xs:complexContent>
   </xs:complexType>
@@ -184,7 +172,6 @@
   <xs:complexType name="Quotation">
     <xs:complexContent>
 	  <xs:extension base="prov:Derivation">
-		<!-- add any additional properties here -->
 	  </xs:extension>
 	</xs:complexContent>
   </xs:complexType>
@@ -192,7 +179,6 @@
   <xs:complexType name="PrimarySource">
     <xs:complexContent>
 	  <xs:extension base="prov:Derivation">
-		<!-- add any additional properties here -->
 	  </xs:extension>
 	</xs:complexContent>
   </xs:complexType>
@@ -235,7 +221,7 @@
   <xs:complexType name="Attribution">
     <xs:sequence>
       <xs:element name="entity" type="prov:EntityRef"/>
-      <xs:element name="agent"    type="prov:AgentRef"/>
+      <xs:element name="agent" type="prov:AgentRef"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:label"/>
         <xs:element ref="prov:type"/>
@@ -248,8 +234,8 @@
   <xs:complexType name="Association">
     <xs:sequence>
       <xs:element name="activity" type="prov:ActivityRef"/>
-      <xs:element name="agent"    type="prov:AgentRef" minOccurs="0"/>
-      <xs:element name="plan"     type="prov:EntityRef" minOccurs="0"/>
+      <xs:element name="agent" type="prov:AgentRef" minOccurs="0"/>
+      <xs:element name="plan" type="prov:PlanRef" minOccurs="0"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:role"/>
         <xs:element ref="prov:label"/>
@@ -264,7 +250,7 @@
     <xs:sequence>
       <xs:element name="delegate" type="prov:AgentRef"/>
       <xs:element name="responsible" type="prov:AgentRef"/>
-      <xs:element name="activity"    type="prov:ActivityRef" minOccurs="0"/>
+      <xs:element name="activity" type="prov:ActivityRef" minOccurs="0"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:label"/>
         <xs:element ref="prov:type"/>
@@ -276,8 +262,8 @@
 
   <xs:complexType name="Influence">
     <xs:sequence>
-      <xs:element name="influencee"     type="prov:AnyRef"/>
-      <xs:element name="influencer"     type="prov:AnyRef"/>
+      <xs:element name="influencee" type="prov:AnyRef"/>
+      <xs:element name="influencer" type="prov:AnyRef"/>
       <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element ref="prov:label"/>
         <xs:element ref="prov:type"/>
@@ -300,15 +286,15 @@
 
   <xs:complexType name="Specialization">
     <xs:sequence>
-      <xs:element name="specificEntity"   type="prov:EntityRef"/>
-      <xs:element name="generalEntity"   type="prov:EntityRef"/>
+      <xs:element name="specificEntity" type="prov:EntityRef"/>
+      <xs:element name="generalEntity" type="prov:EntityRef"/>
     </xs:sequence>
   </xs:complexType>
 
   <xs:complexType name="Alternate">
     <xs:sequence>
-      <xs:element name="alternate1"   type="prov:EntityRef"/>
-      <xs:element name="alternate2"   type="prov:EntityRef"/>
+      <xs:element name="alternate1" type="prov:EntityRef"/>
+      <xs:element name="alternate2" type="prov:EntityRef"/>
     </xs:sequence>
   </xs:complexType>
   
@@ -330,8 +316,8 @@
 
   <xs:complexType name="Membership">
     <xs:sequence>
-      <xs:element name="collection"          type="prov:EntityRef"/>
-      <xs:element name="entity"          type="prov:EntityRef" maxOccurs="unbounded"/>
+      <xs:element name="collection" type="prov:CollectionRef"/>
+      <xs:element name="entity" type="prov:EntityRef" maxOccurs="unbounded"/>
     </xs:sequence>
   </xs:complexType>
 
@@ -357,11 +343,11 @@
 
        -->
   
-  <xs:element name="label"    type="prov:InternationalizedString"/>
-  <xs:element name="role"     type="xs:anySimpleType"/>
-  <xs:element name="type"     type="xs:anySimpleType"/>
+  <xs:element name="label" type="prov:InternationalizedString"/>
+  <xs:element name="role" type="xs:anySimpleType"/>
+  <xs:element name="type" type="xs:anySimpleType"/>
   <xs:element name="location" type="xs:anySimpleType"/>
-  <xs:element name="value"    type="xs:anySimpleType"/>
+  <xs:element name="value" type="xs:anySimpleType"/>
 
   <!-- See comment in preamble.
        These should be prov:QualifiedName
@@ -373,7 +359,7 @@
   <xs:attribute name="ref" type="xs:anyURI"/>
   -->
 
-  <xs:attribute name="id"  type="xs:QName"/>
+  <xs:attribute name="id" type="xs:QName"/>
   <xs:attribute name="ref" type="xs:QName"/>
 
   <xs:complexType name="ActivityRef">
@@ -385,8 +371,8 @@
   <xs:complexType name="CollectionRef">
     <xs:attribute ref="prov:ref" use="required"/>
   </xs:complexType>
-  <xs:complexType name="EmptyCollectionRef">
-    <xs:attribute ref="prov:ref" use="required"/>
+  <xs:complexType name="PlanRef">
+	<xs:attribute ref="prov:ref" use="required"/>
   </xs:complexType>
   <xs:complexType name="AgentRef">
     <xs:attribute ref="prov:ref" use="required"/>
--- a/xml/schema/prov.xsd	Sun Jan 20 11:38:03 2013 -0500
+++ b/xml/schema/prov.xsd	Wed Jan 23 13:04:02 2013 -0700
@@ -1,490 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
-
-<!-- 
-     In PROV-DM, all ids are qualified names, specified as prov:QualifiedName in PROV-N.
-     In this schema, all ids are instead defined as xsd:QNames. 
-  -->
-
-
 <xs:schema targetNamespace="http://www.w3.org/ns/prov#"
            xmlns:xs="http://www.w3.org/2001/XMLSchema"
            xmlns:prov="http://www.w3.org/ns/prov#"
-           xmlns:cu="http://www.w3.org/1999/xhtml/datatypes/"
-           xmlns:xml="http://www.w3.org/XML/1998/namespace"
            elementFormDefault="qualified"
            attributeFormDefault="unqualified">
 
-
-
-  <xs:import namespace="http://www.w3.org/1999/xhtml/datatypes/" />
-  <xs:import namespace="http://www.w3.org/XML/1998/namespace" 
-             schemaLocation="http://www.w3.org/2001/xml.xsd"/>
-
-  <!-- Component 1 -->
-  
-  <xs:complexType name="Entity">
-    <xs:sequence>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:location"/>
-        <xs:element ref="prov:value"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>  
-
-  <xs:complexType name="Activity">
-    <xs:sequence>
-      <xs:element name="startTime" type="xs:dateTime" minOccurs="0"/> 
-      <xs:element name="endTime" type="xs:dateTime" minOccurs="0"/> 
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:location"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Generation">
-    <xs:sequence>
-      <xs:element name="entity" type="prov:EntityRef"/>
-      <xs:element name="activity" type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:location"/>
-        <xs:element ref="prov:role"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Usage">
-    <xs:sequence>
-      <xs:element name="activity" type="prov:ActivityRef"/>
-      <xs:element name="entity" type="prov:EntityRef" minOccurs="0"/>
-      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:location"/>
-        <xs:element ref="prov:role"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Communication">
-    <xs:sequence>
-      <xs:element name="informed" type="prov:ActivityRef"/>
-      <xs:element name="informant" type="prov:ActivityRef"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Start">
-    <xs:sequence>
-      <xs:element name="activity" type="prov:ActivityRef"/>
-      <xs:element name="trigger" type="prov:EntityRef" minOccurs="0"/>
-      <xs:element name="starter" type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:location"/>
-        <xs:element ref="prov:role"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="End">
-    <xs:sequence>
-      <xs:element name="activity" type="prov:ActivityRef"/>
-      <xs:element name="trigger" type="prov:EntityRef"  minOccurs="0"/>
-      <xs:element name="ender" type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:location"/>
-        <xs:element ref="prov:role"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Invalidation">
-    <xs:sequence>
-      <xs:element name="entity" type="prov:EntityRef"/>
-      <xs:element name="activity" type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="time" type="xs:dateTime" minOccurs="0"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:location"/>
-        <xs:element ref="prov:role"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <!-- Component 2 -->
-  
-  <xs:complexType name="Derivation">
-    <xs:sequence>
-      <xs:element name="generatedEntity" type="prov:EntityRef"/>
-      <xs:element name="usedEntity" type="prov:EntityRef"/>
-      <xs:element name="activity" type="prov:ActivityRef" minOccurs="0"/>
-      <xs:element name="generation" type="prov:GenerationRef" minOccurs="0"/>
-      <xs:element name="usage" type="prov:UsageRef" minOccurs="0"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Revision">
-	<xs:complexContent>
-      <xs:extension base="prov:Derivation">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <xs:complexType name="Quotation">
-    <xs:complexContent>
-	  <xs:extension base="prov:Derivation">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <xs:complexType name="PrimarySource">
-    <xs:complexContent>
-	  <xs:extension base="prov:Derivation">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <!-- Component 3 -->
-  
-  <xs:complexType name="Agent">
-    <xs:sequence>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:location"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Person">
-    <xs:complexContent>
-	  <xs:extension base="prov:Agent">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <xs:complexType name="Organization">
-    <xs:complexContent>
-	  <xs:extension base="prov:Agent">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <xs:complexType name="SoftwareAgent">
-    <xs:complexContent>
-	  <xs:extension base="prov:Agent">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <xs:complexType name="Attribution">
-    <xs:sequence>
-      <xs:element name="entity" type="prov:EntityRef"/>
-      <xs:element name="agent" type="prov:AgentRef"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Association">
-    <xs:sequence>
-      <xs:element name="activity" type="prov:ActivityRef"/>
-      <xs:element name="agent" type="prov:AgentRef" minOccurs="0"/>
-      <xs:element name="plan" type="prov:PlanRef" minOccurs="0"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:role"/>
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Delegation">
-    <xs:sequence>
-      <xs:element name="delegate" type="prov:AgentRef"/>
-      <xs:element name="responsible" type="prov:AgentRef"/>
-      <xs:element name="activity" type="prov:ActivityRef" minOccurs="0"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <xs:complexType name="Influence">
-    <xs:sequence>
-      <xs:element name="influencee" type="prov:AnyRef"/>
-      <xs:element name="influencer" type="prov:AnyRef"/>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:label"/>
-        <xs:element ref="prov:type"/>
-        <xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-    <xs:attribute ref="prov:id"/>
-  </xs:complexType>
-
-  <!-- Component 4 -->
-
-  <xs:complexType name="Bundle">
-	<xs:complexContent>
-	  <xs:extension base="prov:Entity">
-		<xs:sequence>
-	      <xs:group ref="prov:documentElements"/>
-	    </xs:sequence>
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <!-- Component 5 -->
-
-  <xs:complexType name="Specialization">
-    <xs:sequence>
-      <xs:element name="specificEntity" type="prov:EntityRef"/>
-      <xs:element name="generalEntity" type="prov:EntityRef"/>
-    </xs:sequence>
-  </xs:complexType>
-
-  <xs:complexType name="Alternate">
-    <xs:sequence>
-      <xs:element name="alternate1" type="prov:EntityRef"/>
-      <xs:element name="alternate2" type="prov:EntityRef"/>
-    </xs:sequence>
-  </xs:complexType>
-  
-  <!-- Component 6 -->
-
-  <xs:complexType name="Collection">
-    <xs:complexContent>
-	  <xs:extension base="prov:Entity">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <xs:complexType name="EmptyCollection">
-    <xs:complexContent>
-	  <xs:extension base="prov:Collection">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <xs:complexType name="Membership">
-    <xs:sequence>
-      <xs:element name="collection" type="prov:CollectionRef"/>
-      <xs:element name="entity" type="prov:EntityRef" maxOccurs="unbounded"/>
-    </xs:sequence>
-  </xs:complexType>
-
-  <xs:complexType name="Plan">
-    <xs:complexContent>
-	  <xs:extension base="prov:Entity">
-	  </xs:extension>
-	</xs:complexContent>
-  </xs:complexType>
-
-  <xs:complexType name="InternationalizedString">
-    <xs:simpleContent>
-      <xs:extension base="xs:string">
-        <xs:attribute ref="xml:lang" use="optional"/>
-      </xs:extension>
-    </xs:simpleContent>
-  </xs:complexType>    
-
-
-   <!--
-       Typed literals are encoded by means
-       of xsi:type that represent the prov:datatype.
-
-       -->
-  
-  <xs:element name="label" type="prov:InternationalizedString"/>
-  <xs:element name="role" type="xs:anySimpleType"/>
-  <xs:element name="type" type="xs:anySimpleType"/>
-  <xs:element name="location" type="xs:anySimpleType"/>
-  <xs:element name="value" type="xs:anySimpleType"/>
-
-  <!-- See comment in preamble.
-       These should be prov:QualifiedName
-       but instead are xsd:QName for tools to process them -->
-
-  <!--  Possible alternative, but may cause us 
-        to lose benefit of existing XML tooling
-  <xs:attribute name="id"  type="xs:anyURI"/>
-  <xs:attribute name="ref" type="xs:anyURI"/>
-  -->
-
-  <xs:attribute name="id" type="xs:QName"/>
-  <xs:attribute name="ref" type="xs:QName"/>
-
-  <xs:complexType name="ActivityRef">
-    <xs:attribute ref="prov:ref" use="required" />
-  </xs:complexType>
-  <xs:complexType name="EntityRef">
-    <xs:attribute ref="prov:ref" use="required"/>
-  </xs:complexType>
-  <xs:complexType name="CollectionRef">
-    <xs:attribute ref="prov:ref" use="required"/>
-  </xs:complexType>
-  <xs:complexType name="PlanRef">
-	<xs:attribute ref="prov:ref" use="required"/>
-  </xs:complexType>
-  <xs:complexType name="AgentRef">
-    <xs:attribute ref="prov:ref" use="required"/>
-  </xs:complexType>
-  <xs:complexType name="UsageRef">
-    <xs:attribute ref="prov:ref" use="required"/>
-  </xs:complexType>
-  <xs:complexType name="GenerationRef">
-    <xs:attribute ref="prov:ref" use="required"/>
-  </xs:complexType>
-  <xs:complexType name="AnyRef">
-    <xs:attribute ref="prov:ref" use="required"/>
-  </xs:complexType>
-
-  <!--
-     top-level definition of elements following the salami slice XSD design pattern
-     to encourage integration within existing non-prov XML documents.
-  -->
-
-  <!-- Component 1 elements -->
-
-  <xs:element name="entity"               type="prov:Entity"/>
-  <xs:element name="activity"             type="prov:Activity"/>
-  <xs:element name="wasGeneratedBy"       type="prov:Generation"/>
-  <xs:element name="used"                 type="prov:Usage"/>
-  <xs:element name="wasInformedBy"        type="prov:Communication"/>
-  <xs:element name="wasStartedBy"         type="prov:Start"/>
-  <xs:element name="wasEndedBy"           type="prov:End"/>
-  <xs:element name="wasInvalidatedBy"     type="prov:Invalidation"/>
-
-  <!-- Component 2 elements -->
-
-  <xs:element name="wasDerivedFrom"       type="prov:Derivation"/>
-  <xs:element name="wasRevisionOf"        type="prov:Revision"/>
-  <xs:element name="wasQuotedFrom"        type="prov:Quotation"/>
-  <xs:element name="hadPrimarySource"     type="prov:PrimarySource"/>
-
-  <!-- Component 3 elements -->
-
-  <xs:element name="agent"                type="prov:Agent"/>
-  <xs:element name="person"               type="prov:Person"/>
-  <xs:element name="organization"         type="prov:Organization"/>
-  <xs:element name="softwareAgent"        type="prov:SoftwareAgent"/>
-  <xs:element name="wasAttributedTo"      type="prov:Attribution"/>
-  <xs:element name="wasAssociatedWith"    type="prov:Association"/>
-  <xs:element name="actedOnBehalfOf"      type="prov:Delegation"/>
-  <xs:element name="wasInfluencedBy"      type="prov:Influence"/>
-  
-  <!-- Component 5 elements -->
-
-  <xs:element name="bundle"               type="prov:Bundle"/>
-  <xs:element name="specializationOf"     type="prov:Specialization"/>
-  <xs:element name="alternateOf"          type="prov:Alternate"/>
-
-  <!-- Component 6 elements -->
-
-  <xs:element name="hadMember"            type="prov:Membership"/>
-  <xs:element name="collection"           type="prov:Collection"/>
-  <xs:element name="emptyCollection"      type="prov:EmptyCollection"/>
-
-  <!-- Component 7 elements -->
-
-  <xs:element name="plan"                 type="prov:Plan"/>
-
-  <!-- document elements -->
-
-  <xs:group name="documentElements">
-    <xs:sequence>
-      <xs:choice minOccurs="0" maxOccurs="unbounded">
-        <xs:element ref="prov:entity"/>
-        <xs:element ref="prov:activity"/>
-        <xs:element ref="prov:wasGeneratedBy"/>
-        <xs:element ref="prov:used"/>
-        <xs:element ref="prov:wasInformedBy"/>
-        <xs:element ref="prov:wasStartedBy"/>
-        <xs:element ref="prov:wasEndedBy"/>
-        <xs:element ref="prov:wasInvalidatedBy"/>
-        <xs:element ref="prov:wasDerivedFrom"/>
-        <xs:element ref="prov:wasRevisionOf"/>
-        <xs:element ref="prov:wasQuotedFrom"/>
-        <xs:element ref="prov:hadPrimarySource"/>
-        <xs:element ref="prov:agent"/>
-        <xs:element ref="prov:person"/>
-        <xs:element ref="prov:organization"/>
-        <xs:element ref="prov:softwareAgent"/>
-        <xs:element ref="prov:wasAttributedTo"/>
-        <xs:element ref="prov:wasAssociatedWith"/>
-        <xs:element ref="prov:actedOnBehalfOf"/>
-        <xs:element ref="prov:wasInfluencedBy"/>
-        <xs:element ref="prov:bundle"/>
-        <xs:element ref="prov:specializationOf"/>
-        <xs:element ref="prov:alternateOf"/>
-	    <xs:element ref="prov:collection"/>
-	    <xs:element ref="prov:emptyCollection"/>
-        <xs:element ref="prov:hadMember"/>
-        <xs:element ref="prov:plan"/>
-		<xs:any namespace="##other"/>
-      </xs:choice>
-    </xs:sequence>
-  </xs:group>
-
-  <xs:element name="document" type="prov:Document" />
-  <xs:complexType name="Document">
-    <xs:sequence>
-      <xs:choice maxOccurs="unbounded">
-        <xs:group ref="prov:documentElements"/>
-        <xs:element ref="prov:bundle"/>
-      </xs:choice>
-    </xs:sequence>
-  </xs:complexType>
-
+	<xs:include schemaLocation="prov-core.xsd"/>
+	<xs:include schemaLocation="extensions/prov-dictionary.xsd"/>
+	<xs:include schemaLocation="extensions/prov-links.xsd"/>
+	
 </xs:schema>