<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:tns="http://example.com"
targetNamespace="http://example.com"
elementFormDefault="unqualified">
<xs:complexType name="FooType">
<xs:attribute name="a-int" type="xs:positiveInteger" use="required" />
<xs:attribute name="b-int" type="xs:negativeInteger" use="required" />
</xs:complexType>
<xs:element name="Foo" type="tns:FooType" />
</xs:schema>