RE: [xml-dev] (newbie) DTD question

["Dare Obasanjo" <dareo@microsoft.com>]

> -----Original Message-----
> From: J. David Eisenberg [mailto:catcode@catcode.com] 
> Sent: Friday, July 12, 2002 12:22 PM
> To: Glen Mazza
> Cc: xml-dev@lists.xml.org
> Subject: Re: [xml-dev] (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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