Table of contentsAppendices |
A Schema for Schemas (normative)Schema for Schemas (normative)The XML Schema definition for XML Schema: Structures itself is presented here as normative part of the specification, and as an illustrative example of the XML Schema in defining itself with the very constructs that it defines. The names of XML Schema language types, elements, attributes and groups defined here are evocative of their purpose, but are occasionally verbose. There is some annotation in comments, but a fuller annotation will require the use of embedded documentation facilities or a hyperlinked external annotation for which tools are not yet readily available. Since an XML Schema: Structures is an XML document, it has optional XML and doctype
declarations that are provided here for completeness. The root
<?xml version='1.0' encoding='UTF-8'?>
<!-- XML Schema schema for XML Schemas: Part 1: Structures -->
<!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN" "XMLSchema.dtd" [
<!-- provide ID type information even for parsers which only read the
internal subset -->
<!ATTLIST xs:schema id ID #IMPLIED>
<!ATTLIST xs:complexType id ID #IMPLIED>
<!ATTLIST xs:complexContent id ID #IMPLIED>
<!ATTLIST xs:simpleContent id ID #IMPLIED>
<!ATTLIST xs:extension id ID #IMPLIED>
<!ATTLIST xs:element id ID #IMPLIED>
<!ATTLIST xs:group id ID #IMPLIED>
<!ATTLIST xs:all id ID #IMPLIED>
<!ATTLIST xs:choice id ID #IMPLIED>
<!ATTLIST xs:sequence id ID #IMPLIED>
<!ATTLIST xs:any id ID #IMPLIED>
<!ATTLIST xs:anyAttribute id ID #IMPLIED>
<!ATTLIST xs:attribute id ID #IMPLIED>
<!ATTLIST xs:attributeGroup id ID #IMPLIED>
<!ATTLIST xs:unique id ID #IMPLIED>
<!ATTLIST xs:key id ID #IMPLIED>
<!ATTLIST xs:keyref id ID #IMPLIED>
<!ATTLIST xs:selector id ID #IMPLIED>
<!ATTLIST xs:field id ID #IMPLIED>
<!ATTLIST xs:include id ID #IMPLIED>
<!ATTLIST xs:import id ID #IMPLIED>
<!ATTLIST xs:redefine id ID #IMPLIED>
<!ATTLIST xs:notation id ID #IMPLIED>
]>
<xs:schema targetNamespace="http://www.w3.org/2001/XMLSchema" blockDefault="#all" elementFormDefault="qualified" version="Id: XMLSchema.xsd,v 1.48 2001/04/24 18:56:39 ht Exp " xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="EN">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/structures.html">
The schema corresponding to this document is normative,
with respect to the syntactic constraints it expresses in the
XML Schema language. The documentation (within <documentation> elements)
below, is not normative, but rather highlights important aspects of
the W3C Recommendation of which this is a part</xs:documentation>
</xs:annotation>
<xs:annotation>
<xs:documentation>
The simpleType element and all of its members are defined
in datatypes.xsd</xs:documentation>
</xs:annotation>
<xs:include schemaLocation="datatypes.xsd"/>
<xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="http://www.w3.org/2001/xml.xsd">
<xs:annotation>
<xs:documentation>
Get access to the xml: attribute groups for xml:lang
as declared on 'schema' and 'documentation' below
</xs:documentation>
</xs:annotation>
</xs:import>
<xs:complexType name="openAttrs">
<xs:annotation>
<xs:documentation>
This type is extended by almost all schema types
to allow attributes from other namespaces to be
added to user schemas.
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:restriction base="xs:anyType">
<xs:anyAttribute namespace="##other" processContents="lax"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="annotated">
<xs:annotation>
<xs:documentation>
This type is extended by all types which allow annotation
other than <schema> itself
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="xs:openAttrs">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="id" type="xs:ID"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:group name="schemaTop">
<xs:annotation>
<xs:documentation>
This group is for the
elements which occur freely at the top level of schemas.
All of their types are based on the "annotated" type by extension.</xs:documentation>
</xs:annotation>
<xs:choice>
<xs:group ref="xs:redefinable"/>
<xs:element ref="xs:element"/>
<xs:element ref="xs:attribute"/>
<xs:element ref="xs:notation"/>
</xs:choice>
</xs:group>
<xs:group name="redefinable">
<xs:annotation>
<xs:documentation>
This group is for the
elements which can self-redefine (see <redefine> below).</xs:documentation>
</xs:annotation>
<xs:choice>
<xs:element ref="xs:simpleType"/>
<xs:element ref="xs:complexType"/>
<xs:element ref="xs:group"/>
<xs:element ref="xs:attributeGroup"/>
</xs:choice>
</xs:group>
<xs:simpleType name="formChoice">
<xs:annotation>
<xs:documentation>
A utility type, not for public use</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:NMTOKEN">
<xs:enumeration value="qualified"/>
<xs:enumeration value="unqualified"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="reducedDerivationControl">
<xs:annotation>
<xs:documentation>
A utility type, not for public use</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:derivationControl">
<xs:enumeration value="extension"/>
<xs:enumeration value="restriction"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="derivationSet">
<xs:annotation>
<xs:documentation>
A utility type, not for public use</xs:documentation>
<xs:documentation>
#all or (possibly empty) subset of {extension, restriction}</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="#all"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:list itemType="xs:reducedDerivationControl"/>
</xs:simpleType>
</xs:union>
</xs:simpleType>
<xs:element name="schema" id="schema">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-schema"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:openAttrs">
<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="xs:include"/>
<xs:element ref="xs:import"/>
<xs:element ref="xs:redefine"/>
<xs:element ref="xs:annotation"/>
</xs:choice>
<xs:sequence minOccurs="0" maxOccurs="unbounded">
<xs:group ref="xs:schemaTop"/>
<xs:element ref="xs:annotation" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:sequence>
<xs:attribute name="targetNamespace" type="xs:anyURI"/>
<xs:attribute name="version" type="xs:token"/>
<xs:attribute name="finalDefault" type="xs:derivationSet" use="optional" default=""/>
<xs:attribute name="blockDefault" type="xs:blockSet" use="optional" default=""/>
<xs:attribute name="attributeFormDefault" type="xs:formChoice" use="optional" default="unqualified"/>
<xs:attribute name="elementFormDefault" type="xs:formChoice" use="optional" default="unqualified"/>
<xs:attribute name="id" type="xs:ID"/>
<xs:attribute ref="xml:lang"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:key name="element">
<xs:selector xpath="xs:element"/>
<xs:field xpath="@name"/>
</xs:key>
<xs:key name="attribute">
<xs:selector xpath="xs:attribute"/>
<xs:field xpath="@name"/>
</xs:key>
<xs:key name="type">
<xs:selector xpath="xs:complexType|xs:simpleType"/>
<xs:field xpath="@name"/>
</xs:key>
<xs:key name="group">
<xs:selector xpath="xs:group"/>
<xs:field xpath="@name"/>
</xs:key>
<xs:key name="attributeGroup">
<xs:selector xpath="xs:attributeGroup"/>
<xs:field xpath="@name"/>
</xs:key>
<xs:key name="notation">
<xs:selector xpath="xs:notation"/>
<xs:field xpath="@name"/>
</xs:key>
<xs:key name="identityConstraint">
<xs:selector xpath=".//xs:key|.//xs:unique|.//xs:keyref"/>
<xs:field xpath="@name"/>
</xs:key>
</xs:element>
<xs:simpleType name="allNNI">
<xs:annotation><xs:documentation>
for maxOccurs</xs:documentation></xs:annotation>
<xs:union memberTypes="xs:nonNegativeInteger">
<xs:simpleType>
<xs:restriction base="xs:NMTOKEN">
<xs:enumeration value="unbounded"/>
</xs:restriction>
</xs:simpleType>
</xs:union>
</xs:simpleType>
<xs:attributeGroup name="occurs">
<xs:annotation><xs:documentation>
for all particles</xs:documentation></xs:annotation>
<xs:attribute name="minOccurs" type="xs:nonNegativeInteger" use="optional" default="1"/>
<xs:attribute name="maxOccurs" type="xs:allNNI" use="optional" default="1"/>
</xs:attributeGroup>
<xs:attributeGroup name="defRef">
<xs:annotation><xs:documentation>
for element, group and attributeGroup,
which both define and reference</xs:documentation></xs:annotation>
<xs:attribute name="name" type="xs:NCName"/>
<xs:attribute name="ref" type="xs:QName"/>
</xs:attributeGroup>
<xs:group name="typeDefParticle">
<xs:annotation>
<xs:documentation>
'complexType' uses this</xs:documentation></xs:annotation>
<xs:choice>
<xs:element name="group" type="xs:groupRef"/>
<xs:element ref="xs:all"/>
<xs:element ref="xs:choice"/>
<xs:element ref="xs:sequence"/>
</xs:choice>
</xs:group>
<xs:group name="nestedParticle">
<xs:choice>
<xs:element name="element" type="xs:localElement"/>
<xs:element name="group" type="xs:groupRef"/>
<xs:element ref="xs:choice"/>
<xs:element ref="xs:sequence"/>
<xs:element ref="xs:any"/>
</xs:choice>
</xs:group>
<xs:group name="particle">
<xs:choice>
<xs:element name="element" type="xs:localElement"/>
<xs:element name="group" type="xs:groupRef"/>
<xs:element ref="xs:all"/>
<xs:element ref="xs:choice"/>
<xs:element ref="xs:sequence"/>
<xs:element ref="xs:any"/>
</xs:choice>
</xs:group>
<xs:complexType name="attribute">
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:sequence>
<xs:element name="simpleType" minOccurs="0" type="xs:localSimpleType"/>
</xs:sequence>
<xs:attributeGroup ref="xs:defRef"/>
<xs:attribute name="type" type="xs:QName"/>
<xs:attribute name="use" use="optional" default="optional">
<xs:simpleType>
<xs:restriction base="xs:NMTOKEN">
<xs:enumeration value="prohibited"/>
<xs:enumeration value="optional"/>
<xs:enumeration value="required"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="default" type="xs:string"/>
<xs:attribute name="fixed" type="xs:string"/>
<xs:attribute name="form" type="xs:formChoice"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="topLevelAttribute">
<xs:complexContent>
<xs:restriction base="xs:attribute">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:element name="simpleType" minOccurs="0" type="xs:localSimpleType"/>
</xs:sequence>
<xs:attribute name="ref" use="prohibited"/>
<xs:attribute name="form" use="prohibited"/>
<xs:attribute name="use" use="prohibited"/>
<xs:attribute name="name" use="required" type="xs:NCName"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:group name="attrDecls">
<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="attribute" type="xs:attribute"/>
<xs:element name="attributeGroup" type="xs:attributeGroupRef"/>
</xs:choice>
<xs:element ref="xs:anyAttribute" minOccurs="0"/>
</xs:sequence>
</xs:group>
<xs:element name="anyAttribute" type="xs:wildcard" id="anyAttribute">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-anyAttribute"/>
</xs:annotation>
</xs:element>
<xs:group name="complexTypeModel">
<xs:choice>
<xs:element ref="xs:simpleContent"/>
<xs:element ref="xs:complexContent"/>
<xs:sequence>
<xs:annotation>
<xs:documentation>
This branch is short for
<complexContent>
<restriction base="xs:anyType">
...
</restriction>
</complexContent></xs:documentation>
</xs:annotation>
<xs:group ref="xs:typeDefParticle" minOccurs="0"/>
<xs:group ref="xs:attrDecls"/>
</xs:sequence>
</xs:choice>
</xs:group>
<xs:complexType name="complexType" abstract="true">
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:group ref="xs:complexTypeModel"/>
<xs:attribute name="name" type="xs:NCName">
<xs:annotation>
<xs:documentation>
Will be restricted to required or forbidden</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="mixed" type="xs:boolean" use="optional" default="false">
<xs:annotation>
<xs:documentation>
Not allowed if simpleContent child is chosen.
May be overriden by setting on complexContent child.</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="abstract" type="xs:boolean" use="optional" default="false"/>
<xs:attribute name="final" type="xs:derivationSet"/>
<xs:attribute name="block" type="xs:derivationSet"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="topLevelComplexType">
<xs:complexContent>
<xs:restriction base="xs:complexType">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:group ref="xs:complexTypeModel"/>
</xs:sequence>
<xs:attribute name="name" type="xs:NCName" use="required"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="localComplexType">
<xs:complexContent>
<xs:restriction base="xs:complexType">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:group ref="xs:complexTypeModel"/>
</xs:sequence>
<xs:attribute name="name" use="prohibited"/>
<xs:attribute name="abstract" use="prohibited"/>
<xs:attribute name="final" use="prohibited"/>
<xs:attribute name="block" use="prohibited"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="restrictionType">
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:sequence>
<xs:choice>
<xs:group ref="xs:typeDefParticle" minOccurs="0"/>
<xs:group ref="xs:simpleRestrictionModel" minOccurs="0"/>
</xs:choice>
<xs:group ref="xs:attrDecls"/>
</xs:sequence>
<xs:attribute name="base" type="xs:QName" use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="complexRestrictionType">
<xs:complexContent>
<xs:restriction base="xs:restrictionType">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:group ref="xs:typeDefParticle" minOccurs="0"/>
<xs:group ref="xs:attrDecls"/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="extensionType">
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:sequence>
<xs:group ref="xs:typeDefParticle" minOccurs="0"/>
<xs:group ref="xs:attrDecls"/>
</xs:sequence>
<xs:attribute name="base" type="xs:QName" use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:element name="complexContent" id="complexContent">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-complexContent"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:choice>
<xs:element name="restriction" type="xs:complexRestrictionType"/>
<xs:element name="extension" type="xs:extensionType"/>
</xs:choice>
<xs:attribute name="mixed" type="xs:boolean">
<xs:annotation>
<xs:documentation>
Overrides any setting on complexType parent.</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:complexType name="simpleRestrictionType">
<xs:complexContent>
<xs:restriction base="xs:restrictionType">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:group ref="xs:simpleRestrictionModel" minOccurs="0"/>
<xs:group ref="xs:attrDecls"/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="simpleExtensionType">
<xs:complexContent>
<xs:restriction base="xs:extensionType">
<xs:sequence>
<xs:annotation>
<xs:documentation>
No typeDefParticle group reference</xs:documentation>
</xs:annotation>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:group ref="xs:attrDecls"/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:element name="simpleContent" id="simpleContent">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-simpleContent"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:choice>
<xs:element name="restriction" type="xs:simpleRestrictionType"/>
<xs:element name="extension" type="xs:simpleExtensionType"/>
</xs:choice>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="complexType" type="xs:topLevelComplexType" id="complexType">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-complexType"/>
</xs:annotation>
</xs:element>
<xs:simpleType name="blockSet">
<xs:annotation>
<xs:documentation>
A utility type, not for public use</xs:documentation>
<xs:documentation>
#all or (possibly empty) subset of {substitution, extension,
restriction}</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="#all"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:list>
<xs:simpleType>
<xs:restriction base="xs:derivationControl">
<xs:enumeration value="extension"/>
<xs:enumeration value="restriction"/>
<xs:enumeration value="substitution"/>
</xs:restriction>
</xs:simpleType>
</xs:list>
</xs:simpleType>
</xs:union>
</xs:simpleType>
<xs:complexType name="element" abstract="true">
<xs:annotation>
<xs:documentation>
The element element can be used either
at the top level to define an element-type binding globally,
or within a content model to either reference a globally-defined
element or type or declare an element-type binding locally.
The ref form is not allowed at the top level.</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:sequence>
<xs:choice minOccurs="0">
<xs:element name="simpleType" type="xs:localSimpleType"/>
<xs:element name="complexType" type="xs:localComplexType"/>
</xs:choice>
<xs:group ref="xs:identityConstraint" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attributeGroup ref="xs:defRef"/>
<xs:attribute name="type" type="xs:QName"/>
<xs:attribute name="substitutionGroup" type="xs:QName"/>
<xs:attributeGroup ref="xs:occurs"/>
<xs:attribute name="default" type="xs:string"/>
<xs:attribute name="fixed" type="xs:string"/>
<xs:attribute name="nillable" type="xs:boolean" use="optional" default="false"/>
<xs:attribute name="abstract" type="xs:boolean" use="optional" default="false"/>
<xs:attribute name="final" type="xs:derivationSet"/>
<xs:attribute name="block" type="xs:blockSet"/>
<xs:attribute name="form" type="xs:formChoice"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="topLevelElement">
<xs:complexContent>
<xs:restriction base="xs:element">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:choice minOccurs="0">
<xs:element name="simpleType" type="xs:localSimpleType"/>
<xs:element name="complexType" type="xs:localComplexType"/>
</xs:choice>
<xs:group ref="xs:identityConstraint" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="ref" use="prohibited"/>
<xs:attribute name="form" use="prohibited"/>
<xs:attribute name="minOccurs" use="prohibited"/>
<xs:attribute name="maxOccurs" use="prohibited"/>
<xs:attribute name="name" use="required" type="xs:NCName"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="localElement">
<xs:complexContent>
<xs:restriction base="xs:element">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:choice minOccurs="0">
<xs:element name="simpleType" type="xs:localSimpleType"/>
<xs:element name="complexType" type="xs:localComplexType"/>
</xs:choice>
<xs:group ref="xs:identityConstraint" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="substitutionGroup" use="prohibited"/>
<xs:attribute name="final" use="prohibited"/>
<xs:attribute name="abstract" use="prohibited"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:element name="element" type="xs:topLevelElement" id="element">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-element"/>
</xs:annotation>
</xs:element>
<xs:complexType name="group" abstract="true">
<xs:annotation>
<xs:documentation>
group type for explicit groups, named top-level groups and
group references</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:group ref="xs:particle" minOccurs="0" maxOccurs="unbounded"/>
<xs:attributeGroup ref="xs:defRef"/>
<xs:attributeGroup ref="xs:occurs"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="realGroup">
<xs:complexContent>
<xs:restriction base="xs:group">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:choice minOccurs="0" maxOccurs="1">
<xs:element ref="xs:all"/>
<xs:element ref="xs:choice"/>
<xs:element ref="xs:sequence"/>
</xs:choice>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="namedGroup">
<xs:annotation>
<xs:documentation>Should derive this from realGroup, but too complicated
for now</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:choice minOccurs="1" maxOccurs="1">
<xs:element name="all">
<xs:complexType>
<xs:complexContent>
<xs:restriction base="xs:all">
<xs:group ref="xs:allModel"/>
<xs:attribute name="minOccurs" use="prohibited"/>
<xs:attribute name="maxOccurs" use="prohibited"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="choice" type="xs:simpleExplicitGroup"/>
<xs:element name="sequence" type="xs:simpleExplicitGroup"/>
</xs:choice>
</xs:sequence>
<xs:attribute name="name" use="required" type="xs:NCName"/>
<xs:attribute name="ref" use="prohibited"/>
<xs:attribute name="minOccurs" use="prohibited"/>
<xs:attribute name="maxOccurs" use="prohibited"/>
</xs:complexType>
<xs:complexType name="groupRef">
<xs:complexContent>
<xs:restriction base="xs:realGroup">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="ref" use="required" type="xs:QName"/>
<xs:attribute name="name" use="prohibited"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="explicitGroup">
<xs:annotation>
<xs:documentation>
group type for the three kinds of group</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:restriction base="xs:group">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:group ref="xs:nestedParticle" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="name" type="xs:NCName" use="prohibited"/>
<xs:attribute name="ref" type="xs:QName" use="prohibited"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="simpleExplicitGroup">
<xs:complexContent>
<xs:restriction base="xs:explicitGroup">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:group ref="xs:nestedParticle" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="minOccurs" use="prohibited"/>
<xs:attribute name="maxOccurs" use="prohibited"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:group name="allModel">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:element name="element" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:annotation>
<xs:documentation>restricted max/min</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:restriction base="xs:localElement">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:choice minOccurs="0">
<xs:element name="simpleType" type="xs:localSimpleType"/>
<xs:element name="complexType" type="xs:localComplexType"/>
</xs:choice>
<xs:group ref="xs:identityConstraint" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="minOccurs" use="optional" default="1">
<xs:simpleType>
<xs:restriction base="xs:nonNegativeInteger">
<xs:enumeration value="0"/>
<xs:enumeration value="1"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="maxOccurs" use="optional" default="1">
<xs:simpleType>
<xs:restriction base="xs:allNNI">
<xs:enumeration value="0"/>
<xs:enumeration value="1"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:group>
<xs:complexType name="all">
<xs:annotation>
<xs:documentation>
Only elements allowed inside</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:restriction base="xs:explicitGroup">
<xs:group ref="xs:allModel"/>
<xs:attribute name="minOccurs" use="optional" default="1">
<xs:simpleType>
<xs:restriction base="xs:nonNegativeInteger">
<xs:enumeration value="0"/>
<xs:enumeration value="1"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="maxOccurs" use="optional" default="1">
<xs:simpleType>
<xs:restriction base="xs:allNNI">
<xs:enumeration value="1"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:element name="all" id="all" type="xs:all">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-all"/>
</xs:annotation>
</xs:element>
<xs:element name="choice" type="xs:explicitGroup" id="choice">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-choice"/>
</xs:annotation>
</xs:element>
<xs:element name="sequence" type="xs:explicitGroup" id="sequence">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-sequence"/>
</xs:annotation>
</xs:element>
<xs:element name="group" type="xs:namedGroup" id="group">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-group"/>
</xs:annotation>
</xs:element>
<xs:complexType name="wildcard">
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:attribute name="namespace" type="xs:namespaceList" use="optional" default="##any"/>
<xs:attribute name="processContents" use="optional" default="strict">
<xs:simpleType>
<xs:restriction base="xs:NMTOKEN">
<xs:enumeration value="skip"/>
<xs:enumeration value="lax"/>
<xs:enumeration value="strict"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:element name="any" id="any">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-any"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:wildcard">
<xs:attributeGroup ref="xs:occurs"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:annotation>
<xs:documentation>
simple type for the value of the 'namespace' attr of
'any' and 'anyAttribute'</xs:documentation>
</xs:annotation>
<xs:annotation>
<xs:documentation>
Value is
##any - - any non-conflicting WFXML/attribute at all
##other - - any non-conflicting WFXML/attribute from
namespace other than targetNS
##local - - any unqualified non-conflicting WFXML/attribute
one or - - any non-conflicting WFXML/attribute from
more URI the listed namespaces
references
(space separated)
##targetNamespace or ##local may appear in the above list, to
refer to the targetNamespace of the enclosing
schema or an absent targetNamespace respectively</xs:documentation>
</xs:annotation>
<xs:simpleType name="namespaceList">
<xs:annotation>
<xs:documentation>
A utility type, not for public use</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="##any"/>
<xs:enumeration value="##other"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:list>
<xs:simpleType>
<xs:union memberTypes="xs:anyURI">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="##targetNamespace"/>
<xs:enumeration value="##local"/>
</xs:restriction>
</xs:simpleType>
</xs:union>
</xs:simpleType>
</xs:list>
</xs:simpleType>
</xs:union>
</xs:simpleType>
<xs:element name="attribute" type="xs:topLevelAttribute" id="attribute">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-attribute"/>
</xs:annotation>
</xs:element>
<xs:complexType name="attributeGroup" abstract="true">
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:group ref="xs:attrDecls"/>
<xs:attributeGroup ref="xs:defRef"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="namedAttributeGroup">
<xs:complexContent>
<xs:restriction base="xs:attributeGroup">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
<xs:group ref="xs:attrDecls"/>
</xs:sequence>
<xs:attribute name="name" use="required" type="xs:NCName"/>
<xs:attribute name="ref" use="prohibited"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="attributeGroupRef">
<xs:complexContent>
<xs:restriction base="xs:attributeGroup">
<xs:sequence>
<xs:element ref="xs:annotation" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="ref" use="required" type="xs:QName"/>
<xs:attribute name="name" use="prohibited"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:element name="attributeGroup" type="xs:namedAttributeGroup" id="attributeGroup">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-attributeGroup"/>
</xs:annotation>
</xs:element>
<xs:element name="include" id="include">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-include"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:attribute name="schemaLocation" type="xs:anyURI" use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="redefine" id="redefine">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-redefine"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:openAttrs">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="xs:annotation"/>
<xs:group ref="xs:redefinable"/>
</xs:choice>
<xs:attribute name="schemaLocation" type="xs:anyURI" use="required"/>
<xs:attribute name="id" type="xs:ID"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="import" id="import">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-import"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:attribute name="namespace" type="xs:anyURI"/>
<xs:attribute name="schemaLocation" type="xs:anyURI"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="selector" id="selector">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-selector"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:attribute name="xpath" use="required">
<xs:simpleType>
<xs:annotation>
<xs:documentation>A subset of XPath expressions for use
in selectors</xs:documentation>
<xs:documentation>A utility type, not for public
use</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:token">
<xs:annotation>
<xs:documentation>The following pattern is intended to allow XPath
expressions per the following EBNF:
Selector ::= Path ( '|' Path )*
Path ::= ('.//')? Step ( '/' Step )*
Step ::= '.' | NameTest
NameTest ::= QName | '*' | NCName ':' '*'
child:: is also allowed
</xs:documentation>
</xs:annotation>
<xs:pattern value="(\.//)?(((child::)?((\i\c*:)?(\i\c*|\*)))|\.)(/(((child::)?((\i\c*:)?(\i\c*|\*)))|\.))*(\|(\.//)?(((child::)?((\i\c*:)?(\i\c*|\*)))|\.)(/(((child::)?((\i\c*:)?(\i\c*|\*)))|\.))*)*">
</xs:pattern>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="field" id="field">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-field"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:attribute name="xpath" use="required">
<xs:simpleType>
<xs:annotation>
<xs:documentation>A subset of XPath expressions for use
in fields</xs:documentation>
<xs:documentation>A utility type, not for public
use</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:token">
<xs:annotation>
<xs:documentation>The following pattern is intended to allow XPath
expressions per the same EBNF as for selector,
with the following change:
Path ::= ('.//')? ( Step '/' )* ( Step | '@' NameTest )
</xs:documentation>
</xs:annotation>
<xs:pattern value="(\.//)?((((child::)?((\i\c*:)?(\i\c*|\*)))|\.)/)*((((child::)?((\i\c*:)?(\i\c*|\*)))|\.)|((attribute::|@)((\i\c*:)?(\i\c*|\*))))(\|(\.//)?((((child::)?((\i\c*:)?(\i\c*|\*)))|\.)/)*((((child::)?((\i\c*:)?(\i\c*|\*)))|\.)|((attribute::|@)((\i\c*:)?(\i\c*|\*)))))*">
</xs:pattern>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:complexType name="keybase">
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:sequence>
<xs:element ref="xs:selector"/>
<xs:element ref="xs:field" minOccurs="1" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="name" type="xs:NCName" use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:group name="identityConstraint">
<xs:annotation>
<xs:documentation>The three kinds of identity constraints, all with
type of or derived from 'keybase'.
</xs:documentation>
</xs:annotation>
<xs:choice>
<xs:element ref="xs:unique"/>
<xs:element ref="xs:key"/>
<xs:element ref="xs:keyref"/>
</xs:choice>
</xs:group>
<xs:element name="unique" type="xs:keybase" id="unique">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-unique"/>
</xs:annotation>
</xs:element>
<xs:element name="key" type="xs:keybase" id="key">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-key"/>
</xs:annotation>
</xs:element>
<xs:element name="keyref" id="keyref">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-keyref"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:keybase">
<xs:attribute name="refer" type="xs:QName" use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="notation" id="notation">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-notation"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:annotated">
<xs:attribute name="name" type="xs:NCName" use="required"/>
<xs:attribute name="public" type="xs:public" use="required"/>
<xs:attribute name="system" type="xs:anyURI"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:simpleType name="public">
<xs:annotation>
<xs:documentation>
A utility type, not for public use</xs:documentation>
<xs:documentation>
A public identifier, per ISO 8879</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:token"/>
</xs:simpleType>
<xs:element name="appinfo" id="appinfo">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-appinfo"/>
</xs:annotation>
<xs:complexType mixed="true">
<xs:sequence minOccurs="0" maxOccurs="unbounded">
<xs:any processContents="lax"/>
</xs:sequence>
<xs:attribute name="source" type="xs:anyURI"/>
</xs:complexType>
</xs:element>
<xs:element name="documentation" id="documentation">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-documentation"/>
</xs:annotation>
<xs:complexType mixed="true">
<xs:sequence minOccurs="0" maxOccurs="unbounded">
<xs:any processContents="lax"/>
</xs:sequence>
<xs:attribute name="source" type="xs:anyURI"/>
<xs:attribute ref="xml:lang"/>
</xs:complexType>
</xs:element>
<xs:element name="annotation" id="annotation">
<xs:annotation>
<xs:documentation source="http://www.w3.org/TR/xmlschema-1/#element-annotation"/>
</xs:annotation>
<xs:complexType>
<xs:complexContent>
<xs:extension base="xs:openAttrs">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="xs:appinfo"/>
<xs:element ref="xs:documentation"/>
</xs:choice>
<xs:attribute name="id" type="xs:ID"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:annotation>
<xs:documentation>
notations for use within XML Schema schemas</xs:documentation>
</xs:annotation>
<xs:notation name="XMLSchemaStructures" public="structures" system="http://www.w3.org/2000/08/XMLSchema.xsd"/>
<xs:notation name="XML" public="REC-xml-19980210" system="http://www.w3.org/TR/1998/REC-xml-19980210"/>
<xs:complexType name="anyType" mixed="true">
<xs:annotation>
<xs:documentation>
Not the real urType, but as close an approximation as we can
get in the XML representation</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:any minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:anyAttribute/>
</xs:complexType>
</xs:schema>
NOTE: |