MicroXSD for MicroXML - version 2010

[Stephen Green <stephengreenubl@gmail.com>]

A final '2010' version of my suggested 'MicroXSD' schema: attached and below.

This MicroXSD just supports local elements and attributes to support a MicroXML
profile with a single 'xmlns' namespace attribute (no namespace prefixes) in the
XML instances.

---------
With best regards and best wishes for 2011

Stephen D Green


<schema targetNamespace="http://www.w3.org/2001/XMLSchema";
elementFormDefault="qualified" attributeFormDefault="unqualified"
version="MicroXSD-2010" xmlns="http://www.w3.org/2001/XMLSchema";>
  <!-- -->
  <!-- This schema designates a suggested subset of W3C XML Schema -->
  <!-- for use with the lightweight profile of XML called MicroXML [ref 1] -->
  <!-- as discussed on XML-DEV mailing list December 2010 [ref 2]. -->
  <!-- -->
  <!-- Reference ref 1: http://blog.jclark.com/2010/12/more-on-microxml.html -->
  <!-- Reference ref 2:
http://lists.xml.org/archives/xml-dev/201012/maillist.html -->
  <!-- -->
  <!-- Author: Stephen D Green (JLT Group Ltd), December 2010 -->
  <!-- Website: www.stephengreenxml.org.uk -->
  <!-- (c) Portions Copyright JLT Group Ltd 2010 -->
  <!-- No restrictions are placed on use and adaptation of this schema
but no -->
  <!-- guarantee is given of its quality or suitability for any purpose. -->
  <!-- Those who use or adapt this schema do so at their own risk. -->
  <!-- -->
 <element name="schema">
   <complexType>
     <sequence>
       <element name="element" form="qualified">
         <complexType>
           <choice>
             <element name="complexType">
               <complexType>
                 <sequence>
                   <element name="sequence" minOccurs="0">
                     <complexType>
                       <group ref="sequence_group" minOccurs="0"
                       maxOccurs="unbounded"></group>
                     </complexType>
                   </element>
                   <sequence>
                     <element name="attribute" minOccurs="0"
                     maxOccurs="unbounded">
                       <complexType>
                         <sequence>
                           <element name="simpleType">
                             <complexType>
                               <sequence>
                                 <element name="restriction">
                                   <complexType>
                                     <sequence>
                                       <element name="enumeration"
                                       minOccurs="0"
                                       maxOccurs="unbounded">
                                         <complexType>
                                           <attribute name="value"
                                           type="string"
                                           use="required">
                                           </attribute>
                                         </complexType>
                                       </element>
                                     </sequence>
                                     <attribute ref="base"
                                     use="optional"
                                     default="string"></attribute>
                                   </complexType>
                                 </element>
                               </sequence>
                             </complexType>
                           </element>
                         </sequence>
                         <attribute name="use" use="optional">
                           <simpleType>
                             <restriction base="string">
                               <enumeration value="optional">
                               </enumeration>
                               <enumeration value="required">
                               </enumeration>
                             </restriction>
                           </simpleType>
                         </attribute>
                         <attribute name="name" type="NCName"
                         use="required"></attribute>
                       </complexType>
                     </element>
                   </sequence>
                 </sequence>
                 <attribute name="mixed" use="optional">
                   <simpleType>
                     <restriction base="string">
                       <enumeration value="true"></enumeration>
                       <enumeration value="false"></enumeration>
                     </restriction>
                   </simpleType>
                 </attribute>
               </complexType>
             </element>
             <element name="simpleType">
               <complexType>
                 <sequence>
                   <element name="restriction">
                     <complexType>
                       <sequence>
                         <element name="enumeration" minOccurs="0"
                         maxOccurs="unbounded">
                           <complexType>
                             <attribute name="value" type="string"
                             use="required"></attribute>
                           </complexType>
                         </element>
                       </sequence>
                       <attribute ref="base" use="optional"
                       default="string"></attribute>
                     </complexType>
                   </element>
                 </sequence>
               </complexType>
             </element>
           </choice>
           <attribute name="name" type="NCName" use="required">
           </attribute>
         </complexType>
       </element>
     </sequence>
     <attribute name="version" type="string" use="optional">
     </attribute>
     <attribute name="attributeFormDefault" use="required"
     fixed="unqualified"></attribute>
     <attribute name="elementFormDefault" use="required"
     fixed="qualified"></attribute>
     <attribute name="targetNamespace" type="string"
     use="optional"></attribute>
   </complexType>
 </element>
 <group name="sequence_group">
   <choice>
     <element name="element" form="qualified">
       <complexType>
         <choice>
           <element name="complexType">
             <complexType>
               <sequence>
                 <element name="sequence" minOccurs="0">
                   <complexType>
                     <group ref="sequence_group" minOccurs="0"
                     maxOccurs="unbounded"></group>
                   </complexType>
                 </element>
                 <sequence>
                   <element name="attribute" minOccurs="0"
                   maxOccurs="unbounded">
                     <complexType>
                       <sequence>
                         <element name="simpleType">
                           <complexType>
                             <sequence>
                               <element name="restriction">
                                 <complexType>
                                   <sequence>
                                     <element name="enumeration"
                                     minOccurs="0"
                                     maxOccurs="unbounded">
                                       <complexType>
                                         <attribute name="value"
                                         type="string"
                                         use="required">
                                         </attribute>
                                       </complexType>
                                     </element>
                                   </sequence>
                                   <attribute ref="base"
                                   use="optional"
                                   default="string"></attribute>
                                 </complexType>
                               </element>
                             </sequence>
                           </complexType>
                         </element>
                       </sequence>
                       <attribute name="use" use="optional">
                         <simpleType>
                           <restriction base="string">
                             <enumeration value="optional">
                             </enumeration>
                             <enumeration value="required">
                             </enumeration>
                           </restriction>
                         </simpleType>
                       </attribute>
                       <attribute name="name" type="NCName"
                       use="required"></attribute>
                     </complexType>
                   </element>
                 </sequence>
               </sequence>
               <attribute name="mixed" use="optional">
                 <simpleType>
                   <restriction base="string">
                     <enumeration value="true"></enumeration>
                     <enumeration value="false"></enumeration>
                   </restriction>
                 </simpleType>
               </attribute>
             </complexType>
           </element>
           <element name="simpleType">
             <complexType>
               <sequence>
                 <element name="restriction">
                   <complexType>
                     <sequence>
                       <element name="enumeration" minOccurs="0"
                       maxOccurs="unbounded">
                         <complexType>
                           <attribute name="value" type="string"
                           use="required"></attribute>
                         </complexType>
                       </element>
                     </sequence>
                     <attribute ref="base" use="optional"
                     default="string"></attribute>
                   </complexType>
                 </element>
               </sequence>
             </complexType>
           </element>
         </choice>
         <attribute name="name" type="NCName" use="required">
         </attribute>
         <attribute name="minOccurs" use="optional">
           <simpleType>
             <restriction base="string">
               <enumeration value="0"></enumeration>
               <enumeration value="1"></enumeration>
             </restriction>
           </simpleType>
         </attribute>
         <attribute name="maxOccurs" use="optional">
           <simpleType>
             <restriction base="string">
               <enumeration value="1"></enumeration>
               <enumeration value="unbounded"></enumeration>
             </restriction>
           </simpleType>
         </attribute>
       </complexType>
     </element>
   </choice>
 </group>
 <attribute name="base">
   <simpleType>
     <restriction base="string">
       <!-- Suggested, default datatype enumerations are listed as
comments below -->
       <!-- and may be uncommented as required. Alternative datatype
enumerations -->
       <!-- can be determined for individual contexts and, if
preferred, defined -->
       <!-- externally to this schema e.g. with OASIS-open.org Genericode -->
       <!--

<enumeration value="string"></enumeration>

<enumeration value="decimal"></enumeration>

<enumeration value="integer"></enumeration>

<enumeration value="date"></enumeration>

<enumeration value="dateTime"></enumeration>

<enumeration value="boolean"></enumeration>

<enumeration value="base64Binary"></enumeration>

<enumeration value="ID"></enumeration>

<enumeration value="IDREF"></enumeration>

-->
     </restriction>
   </simpleType>
 </attribute>
</schema>

MicroXSD-2010.xsd