Is this xml schema invalid?

[Ramkumar Menon <ram.menon@oracle.com>]

Gurus,

I have a main schema as follows.

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";
            xmlns="http://www.example.org";
            targetNamespace="http://www.example.org";>
  <xsd:import schemaLocation="NoNS.xsd"/>          
  <xsd:element name="root">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="test" type="sampleType"/>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
</xsd:schema>

As you see, it imports a no-namespace schema NoNS.xsd

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";
            xmlns="http://www.example.org";>

  <xsd:complexType name="sampleType">
    <xsd:sequence>
      <xsd:element name="sample" type="xsd:string"/>
    </xsd:sequence>
  </xsd:complexType>

</xsd:schema>



When I open up the Main.xsd in a graphical schema editor, it complains about the "sampleType" reference."sampleType" is referred from the NoNS.xsd, as indicated above. Just so that you dont miss it, both schemas are elementFormDefault="unqualified", as indicated by the absence of the attribute.

Is this error expected? Or is the tool not behaving as expected?

regards,
Ram