<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
    
    <xs:element name="Book">
        <xs:complexType>
            <xs:sequence>
                <xs:any minOccurs="0"/>
                <xs:element name="Author" type="xs:string" />
                <xs:element name="Title" type="xs:string"/>
                <xs:element name="Date" type="xs:string"/>
                <xs:element name="ISBN" type="xs:string"/>
                <xs:element name="Publisher" type="xs:string"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    
</xs:schema>
