<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:lib="http://example.com/library"
           targetNamespace="http://example.com/library"
           elementFormDefault="qualified">

  <xs:complexType name="Publisher">
    <xs:annotation>
      <xs:documentation>Publisher of a catalogued book.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="name" type="xs:string"/>
      <xs:element name="foundedYear" type="xs:int" minOccurs="0"/>
    </xs:sequence>
  </xs:complexType>

</xs:schema>