xmlschema.dtd

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            name               %NCName;               #IMPLIED
            id                 ID                     #IMPLIED
            ref                %QName;                #IMPLIED
            type               %QName;                #IMPLIED
            minOccurs          %nonNegativeInteger;   #IMPLIED
            maxOccurs          CDATA                  #IMPLIED
            nillable           %boolean;              #IMPLIED
            substitutionGroup  %QName;                #IMPLIED
            abstract           %boolean;              #IMPLIED
            final              %complexDerivationSet; #IMPLIED
            block              %blockSet;             #IMPLIED
            default            CDATA                  #IMPLIED
            fixed              CDATA                  #IMPLIED
            form               %formValues;           #IMPLIED
            %elementAttrs;>
<!-- type and ref are mutually exclusive.
     name and ref are mutually exclusive, one is required -->
<!-- In the absence of type AND ref, type defaults to type of
     substitutionGroup, if any, else the ur-type, i.e. unconstrained -->
<!-- default and fixed are mutually exclusive -->

<!ELEMENT %group; ((%annotation;)?,(%mgs;)?)>
<!ATTLIST %group; 
          name        %NCName;               #IMPLIED
          ref         %QName;                #IMPLIED
          minOccurs   %nonNegativeInteger;   #IMPLIED
          maxOccurs   CDATA                  #IMPLIED
          id          ID                     #IMPLIED
          %groupAttrs;>

<!ELEMENT %all; ((%annotation;)?, (%element;)*)>
<!ATTLIST %all;
          minOccurs   (1)                    #IMPLIED
          maxOccurs   (1)                    #IMPLIED
          id          ID                     #IMPLIED
          %allAttrs;>

<!ELEMENT %choice; ((%annotation;)?, (%element;| %group;| %cs; | %any;)*)>
<!ATTLIST %choice;
          minOccurs   %nonNegativeInteger;   #IMPLIED
          maxOccurs   CDATA                  #IMPLIED
          id          ID                     #IMPLIED
          %choiceAttrs;>

<!ELEMENT %sequence; ((%annotation;)?, (%element;| %group;| %cs; | %any;)*)>
<!ATTLIST %sequence;
          minOccurs   %nonNegativeInteger;   #IMPLIED
          maxOccurs   CDATA                  #IMPLIED
          id          ID                     #IMPLIED
          %sequenceAttrs;>

<!-- an anonymous grouping in a model, or
     a top-level named group definition, or a reference to same -->

<!-- Note that if order is 'all', group is not allowed inside.
     If order is 'all' THIS group must be alone (or referenced alone) at
     the top level of a content model -->
<!-- If order is 'all', minOccurs==maxOccurs==1 on element/any inside -->
<!-- Should allow minOccurs=0 inside order='all' . . . -->

<!ELEMENT %any; (%annotation;)?>
<!ATTLIST %any;
            namespace       CDATA                  '##any'
            processContents (skip|lax|strict)      'strict'
            minOccurs       %nonNegativeInteger;   '1'
            maxOccurs       CDATA                  '1'
            id              ID                     #IMPLIED
            %anyAttrs;>

<!-- namespace is interpreted as follows:
                  ##any      - - any non-conflicting WFXML at all

                  ##other    - - any non-conflicting WFXML from namespace other
                                  than targetNamespace

                  ##local    - - any unqualified non-conflicting WFXML/attribute
                  one or     - - any non-conflicting WFXML from
                  more URI        the listed namespaces
                  references

                  ##targetNamespace ##local may appear in the above list,
                    with the obvious meaning -->

<!ELEMENT %anyAttribute; (%annotation;)?>
<!ATTLIST %anyAttribute;
            namespace       CDATA              '##any'
            processContents (skip|lax|strict)  'strict'
            id              ID                 #IMPLIED
            %anyAttributeAttrs;>
<!-- namespace is interpreted as for 'any' above -->

<!-- simpleType only if no type|ref attribute -->
<!-- ref not allowed at top level, name iff at top level -->
<!ELEMENT %attribute; ((%annotation;)?, (%simpleType;)?)>
<!ATTLIST %attribute;
          name      %NCName;      #IMPLIED
          id        ID            #IMPLIED
          ref       %QName;       #IMPLIED
          type      %QName;       #IMPLIED
          use       (prohibited|optional|required) #IMPLIED
          default   CDATA         #IMPLIED
          fixed     CDATA         #IMPLIED
          form      %formValues;  #IMPLIED
          %attributeAttrs;>
<!-- type and ref are mutually exclusive.
     name and ref are mutually exclusive, one is required -->
<!-- default for use is optional when nested, none otherwise -->
<!-- default and fixed are mutually exclusive -->
<!-- type attr and simpleType content are mutually exclusive -->

<!-- an attributeGroup is a named collection of attribute decls, or a
     reference thereto -->
<!ELEMENT %attributeGroup; ((%annotation;)?,
                       (%attribute; | %attributeGroup;)*,
                       (%anyAttribute;)?) >
<!ATTLIST %attributeGroup;
                 name       %NCName;       #IMPLIED
                 id         ID             #IMPLIED
                 ref        %QName;        #IMPLIED
                 %attributeGroupAttrs;>

<!-- ref iff no content, no name.  ref iff not top level -->

<!-- better reference mechanisms -->
<!ELEMENT %unique; ((%annotation;)?, %selector;, (%field;)+)>
<!ATTLIST %unique;
          name     %NCName;       #REQUIRED
	  id       ID             #IMPLIED
	  %uniqueAttrs;>

<!ELEMENT %key;    ((%annotation;)?, %selector;, (%field;)+)>
<!ATTLIST %key;
          name     %NCName;       #REQUIRED
	  id       ID             #IMPLIED
	  %keyAttrs;>

<!ELEMENT %keyref; ((%annotation;)?, %selector;, (%field;)+)>
<!ATTLIST %keyref;
          name     %NCName;       #REQUIRED
	  refer    %QName;        #REQUIRED
	  id       ID             #IMPLIED
	  %keyrefAttrs;>

<!ELEMENT %selector; ((%annotation;)?)>
<!ATTLIST %selector;
          xpath %XPathExpr; #REQUIRED
          id    ID          #IMPLIED
          %selectorAttrs;>
<!ELEMENT %field; ((%annotation;)?)>
<!ATTLIST %field;
          xpath %XPathExpr; #REQUIRED
          id    ID          #IMPLIED
          %fieldAttrs;>

<!-- Schema combination mechanisms -->
<!ELEMENT %include; (%annotation;)?>
<!ATTLIST %include;
          schemaLocation %URIref; #REQUIRED
          id             ID       #IMPLIED
          %includeAttrs;>

<!ELEMENT %import; (%annotation;)?>
<!ATTLIST %import;
          namespace      %URIref; #IMPLIED
          schemaLocation %URIref; #IMPLIED
          id             ID       #IMPLIED
          %importAttrs;>

<!ELEMENT %redefine; (%annotation; | %simpleType; | %complexType; |
                      %attributeGroup; | %group;)*>
<!ATTLIST %redefine;
          schemaLocation %URIref; #REQUIRED
          id             ID       #IMPLIED
          %redefineAttrs;>

<!ELEMENT %notation; (%annotation;)?>
<!ATTLIST %notation;
	  name        %NCName;    #REQUIRED
	  id          ID          #IMPLIED
	  public      CDATA       #REQUIRED
	  system      %URIref;    #IMPLIED
	  %notationAttrs;>

<!-- Annotation is either application information or documentation -->
<!-- By having these here they are available for datatypes as well
     as all the structures elements -->

<!ELEMENT %annotation; (%appinfo; | %documentation;)*>
<!ATTLIST %annotation; %annotationAttrs;>

<!-- User must define annotation elements in internal subset for this
     to work -->
<!ELEMENT %appinfo; ANY>   <!-- too restrictive -->
<!ATTLIST %appinfo;
          source     %URIref;      #IMPLIED
          id         ID         #IMPLIED
          %appinfoAttrs;>
<!ELEMENT %documentation; ANY>   <!-- too restrictive -->
<!ATTLIST %documentation;
          source     %URIref;   #IMPLIED
          id         ID         #IMPLIED
          xml:lang   CDATA      #IMPLIED
          %documentationAttrs;>

<!NOTATION XMLSchemaStructures PUBLIC
           'structures' 'http://www.w3.org/2001/XMLSchema.xsd' >
<!NOTATION XML PUBLIC
           'REC-xml-1998-0210' 'http://www.w3.org/TR/1998/REC-xml-19980210' >