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dtddiff of XSDL 5/99 and 9/99

• From: "DuCharme, Robert" <DuCharmR@m...>
• To: "'xml-dev'" <xml-dev@i...>
• Date: Tue, 28 Sep 1999 11:23:38 -0400

I ran Earl Hood's dtddiff on the DTD provided in Appendix B of the September
24th W3C Schema WD to compare it to the May version, and thought others
might be interested in the output. (See
http://www.oac.uci.edu/indiv/ehood/perlSGML.html for Earl's excellent
collection of DTD manipulation tools which, although written for SGML DTDs,
work fine with XML DTDs.) It's a nice, concise summary of differences. If
your mail reader displays it in a proportional font, set it to a monospaced
font to make the columns line up properly.

Bob DuCharme       www.snee.com/bob       <bob@  
snee.com>  see www.snee.com/bob/xmlann for "XML:
The Annotated Specification" from Prentice Hall.


    ----------------------------------------------------------------------
                 New Elements/Attributes (xmlschema9-99.dtd)
    ----------------------------------------------------------------------
   <archetype content>              <archetype default>
   <archetype fixed>                <archetype order>
   <archetype schemaabbrev>         <archetype schemaname>
   <archetype type>                 <attribute>
   <attribute default>              <attribute fixed>
   <attribute maxoccurs>            <attribute minoccurs>
   <attribute name>                 <attribute schemaabbrev>
   <attribute schemaname>           <attribute type>
   <component>                      <component name>
   <component type>                 <datatypequal>
   <element>                        <element archref>
   <element default>                <element export>
   <element fixed>                  <element maxoccurs>
   <element minoccurs>              <element name>
   <element ref>                    <element schemaabbrev>
   <element schemaname>             <element type>
   <encoding>                       <export elements>
   <group>                          <group collection>
   <group maxoccurs>                <group minoccurs>
   <group name>                     <group order>
   <import elements>                <include elements>
   <maxabsolutevalue>               <minabsolutevalue>
   <modelgroup order>               <modelgroupref maxoccurs>
   <modelgroupref minoccurs>        <refines name>
   <refines schemaabbrev>           <refines schemaname>
   <schema targetns>
    ----------------------------------------------------------------------
             Old/removed Elements/Attributes (xmlschema5-99.dtd)
    ----------------------------------------------------------------------
   <all>                            <all maxoccur>
   <all minoccur>                   <any>
   <archetype export>               <archetyperef>
   <archetyperef name>              <archetyperef schemaabbrev>
   <archetyperef schemaname>        <attrdecl>
   <attrdecl name>                  <attrdecl required>
   <choice>                         <choice maxoccur>
   <choice minoccur>                <datatyperef>
   <datatyperef name>               <datatyperef schemaabbrev>
   <datatyperef schemaname>         <default>
   <elementtype>                    <elementtype export>
   <elementtype model>              <elementtype name>
   <elementtyperef>                 <elementtyperef maxoccur>
   <elementtyperef minoccur>        <elementtyperef name>
   <elementtyperef schemaabbrev>    <elementtyperef schemaname>
   <empty>                          <entityref>
   <entityref name>                 <entityref schemaabbrev>
   <entityref schemaname>           <export elementtypes>
   <fixed>                          <import elementtypes>
   <include elementtypes>           <mixed>
   <modelgroupref maxoccur>         <modelgroupref minoccur>
   <notationref>                    <notationref name>
   <notationref schemaabbrev>       <notationref schemaname>
   <schema name>                    <sequence>
   <sequence maxoccur>              <sequence minoccur>
    ----------------------------------------------------------------------
                           Content Rule Differences
    ----------------------------------------------------------------------
         ------------------------------------------------------------
                            <ARCHETYPE>

  << old content rule <<
  (refines?,
   (DATATYPEREF|
    (ANY|EMPTY|ALL|CHOICE|ELEMENTTYPEREF|ELEMENTTYPE|SEQUENCE|MIXED|
     modelgroupref))?,
   (ATTRDECL|attrgroupref)*)

  >> new content rule >>
  (refines*,
   ((element|group|modelgroupref)*|datatypequal?),
   (attribute|attrgroupref)*)

         ------------------------------------------------------------
                            <ATTRGROUP>

  << old content rule <<
  (ATTRDECL|attrgroupref)+

  >> new content rule >>
  (attribute|attrgroupref)+

         ------------------------------------------------------------
                             <DATATYPE>

  << old content rule <<
  (basetype,
   (((mininclusive|minexclusive)?,
     (maxinclusive|maxexclusive)?)|precision|scale|lexicalrepresentation|
    enumeration|length|maxlength)*)

  >> new content rule >>
  (basetype,
   ((mininclusive|minexclusive)|
    (maxinclusive|maxexclusive)|
    (maxabsolutevalue,minabsolutevalue)?|precision|scale|
    lexicalrepresentation|enumeration|length|maxlength|encoding)*)

         ------------------------------------------------------------
                              <IMPORT>

  << old content rule <<
  ((ELEMENTTYPEREF|ARCHETYPEREF|DATATYPEREF|modelgroupref|attrgroupref|
    ENTITYREF|NOTATIONREF)*)

  >> new content rule >>
  (component*)

         ------------------------------------------------------------
                             <INCLUDE>

  << old content rule <<
  ((ELEMENTTYPEREF|ARCHETYPEREF|DATATYPEREF|modelgroupref|attrgroupref|
    ENTITYREF|NOTATIONREF)*)

  >> new content rule >>
  (component*)

         ------------------------------------------------------------
                            <MODELGROUP>

  << old content rule <<
  (ALL|CHOICE|ELEMENTTYPEREF|ELEMENTTYPE|SEQUENCE)

  >> new content rule >>
  (element|group|modelgroupref)+

         ------------------------------------------------------------
                             <REFINES>

  << old content rule <<
  (ARCHETYPEREF)*

  >> new content rule >>
  EMPTY

         ------------------------------------------------------------
                              <SCHEMA>

  << old content rule <<
  ((import*,include*,export?,
    (comment|datatype|archetype|ELEMENTTYPE|attrgroup|modelgroup|notation|
     textentity|externalentity|unparsedentity)*))

  >> new content rule >>
  ((import*,include*,export?,
    (comment|datatype|archetype|element|attrgroup|modelgroup|notation|
     textentity|externalentity|unparsedentity)*))

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