<xs:complexType name="Customer">
    <xs:sequence>
        <xs:element minOccurs="1" maxOccurs="1" name="ID" type="xs:integer"/>
        <xs:element minOccurs="0" maxOccurs="1" name="TitleID" type="xs:integer"/>
        <xs:element minOccurs="0" maxOccurs="1" name="FirstName" type="xs:string"/>
        <xs:element minOccurs="0" maxOccurs="1" name="FamilyName" type="xs:string"/>
        <xs:element minOccurs="0" maxOccurs="1" name="PreviousName" type="xs:string"/>
        <xs:element minOccurs="0" maxOccurs="1" name="DateOfBirth" type="xs:date"/>
    </xs:sequence>
</xs:complexType name="Customer">