Hi Gordon

Had a similar problem and it took me ages to sort something out (just
writing a dissertation about DTD vs Schema use..)

This is what worked for me, but I am not an expert so my solution
might not be how it should be done...

Sample Schema 1 (file: untitled8.xsd):

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:in="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
    <xs:import namespace="http://www.w3.org/2001/XMLSchema"
schemaLocation="untitled9.xsd"></xs:import>
    <xs:element name="base">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="in:base"></xs:element> 
            </xs:sequence>
            <xs:attribute name="myNodeABC"></xs:attribute>
            <xs:attribute name="myNodeDEF"></xs:attribute>
        </xs:complexType>
    </xs:element>
</xs:schema>
which is your main Schema, note the <xs:import> tag, which references
the location of your "to be imported" element (here in the same
directory so just referenced "untitled9.xsd").  Also note above the
<xs:import> - tag a new xmlns namespace abbreviation is introduced
ie... xmlns:in - this is because I have given your second Schema a new
namespace prefix (in)...:

Sample Schema 2:  This is the "to be imported" schema (my doc called
untitled9.xsd - referenced in Schema 1 in the <xs:import> tag) with
the new namespace prefix in:

<?xml version="1.0" encoding="UTF-8"?>
<in:schema xmlns:in="http://www.w3.org/2001/XMLSchema"
    targetNamespace="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
    <in:element name="base">
    <in:complexType>
      <in:attribute name="myNodeABC" type="in:string"/>
      <in:attribute name="myNodeXYZ" type="in:string"/>
    </in:complexType>
  </in:element>
</in:schema>

The resulting XML instance document:

<?xml version="1.0" encoding="UTF-8"?>
<base xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="file:untitled8.xsd"
    myNodeABC="" myNodeDEF="">
    <base xmlns="http://www.w3.org/2001/XMLSchema" 
    myNodeABC="" myNodeXYZ="">Content of base element of Schema 2
nested in the base element of Schema 1 </base>
</base>

By the way, I used the oXygen XML editor for this, for some reason
Altova's XMLSpy">XMLSpy does not like my new namespace prefix... but oXygen
validates it all..

Again, this might be complete gibberish but I hope it helps..

Cheers
Ingrid

PS let me know what you think of it anyway, might be helpful for my
dissertation to know if I am thinking on the right lines..And if you
find an easier way to do it, could you please post it??

gdickens@c... (Gordon Dickens) wrote in message news:<8738a092.0408031840.8eaef70@p...>...
> I have target xml to generate from schema.  All of the XML instances
> have the same global element i.e. <base>.  I would like to combine all
> of the schemas into a single schema where I could generate any of the
> specific instances.
> 
> sample schema one:
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> elementFormDefault="qualified">
>   <xs:element name="base">
>     <xs:complexType>
>       <xs:attribute name="myNodeABC" type="xs:string"/>
>       <xs:attribute name="myNodeDEF" type="xs:string"/>
>     </xs:complexType>
>   </xs:element>
> </xs:schema>
> 
> sample schema two:
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> elementFormDefault="qualified">
>   <xs:element name="base">
>     <xs:complexType>
>       <xs:attribute name="myNodeABC" type="xs:string"/>
>       <xs:attribute name="myNodeXYZ" type="xs:string"/>
>     </xs:complexType>
>   </xs:element>
> </xs:schema>
> 
> Can anyone suggest how to join these two into a single schema where
> the instance document does not have namespace prefixed
> elements/attributes?
> 
> I tried attributeGroups, groups, import and include elements, without
> any luck.
> 
> Any help is appreciated.
> 
> Thanks,
> Gordon