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RE: (newbie) DTD question

• To: "J. David Eisenberg" <catcode@c...>,"Glen Mazza" <glenmazza@y...>
• Subject: RE: (newbie) DTD question
• From: "Dare Obasanjo" <dareo@m...>
• Date: Fri, 12 Jul 2002 13:45:14 -0700
• Cc: <xml-dev@l...>
• Thread-index: AcIp2XhBrybebpGER5a5cMfh7kZfLgACv77A
• Thread-topic: (newbie) DTD question

> -----Original Message-----
> From: J. David Eisenberg [mailto:catcode@c...] 
> Sent: Friday, July 12, 2002 12:22 PM
> To: Glen Mazza
> Cc: xml-dev@l...
> Subject: Re:  (newbie) DTD question
> You can't redefine an element in a DTD (i.e., make it context 
> dependent). However, it is easily possible in Relax NG:
> 
> <element name="person">
>    <element name="name">
>        <element name="firstname"><text/></element>
>        <element name="lastname"><text/></element>
>    </element>
> </element>
> 
> <element name="pet">
>    <element name="name"><text/></element>
> </element>
> 
> I suspect it's possible with XML Schema as well.

Yup. 

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

 <xs:element name="family">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="person" type="personType" />    
    <xs:element name="pet" type="petType" />         
   </xs:sequence>
  </xs:complexType>
 </xs:element>

 <xs:complexType name="petType">
  <xs:sequence>
   <xs:element name="name" type="xs:string"/>
  </xs:sequence>
 </xs:complexType>

 <xs:complexType name="personType">
  <xs:sequence>
  <xs:element name="name">
   <xs:complexType>
    <xs:sequence>
     <xs:element name="firstname" type="xs:string" />
     <xs:element name="lastname" type="xs:string" />
    </xs:sequence>
   </xs:complexType>
  </xs:element>
  </xs:sequence>
 </xs:complexType>

</xs:schema>


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