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The shape of your schema is fine. The details were not quite right --
here's a cleaned-up version:
<xs:schema targetNamespace="urn:xmlns:25hoursaday-com:customer" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:cust="urn:xmlns:25hoursaday-com:customer" elementFormDefault="qualified">
<xs:complexType name="Person" abstract="true">
<xs:sequence>
<xs:element name="Name"/>
<xs:element name="Job"/>
<xs:element name="Power" type="cust:powerType"/>
</xs:sequence>
</xs:complexType>
<xs:simpleType name="powerType">
<xs:restriction base="xs:string">
<xs:enumeration value="10Pounds"/>
<xs:enumeration value="1000Pounds"/>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="Man">
<xs:complexContent>
<xs:extension base="cust:Person">
<xs:sequence>
<xs:element name="married"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="SuperMan">
<xs:complexContent>
<xs:restriction base="cust:Man">
<xs:sequence>
<xs:element name="Name"/>
<xs:element name="Job"/>
<xs:element name="Power">
<xs:simpleType>
<xs:restriction base="cust:powerType">
<xs:enumeration value="10Pounds"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="married"/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:schema>
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
Half-time member of W3C Team
2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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