javaSE1001/s_day13/books-schema.xml

<books xmlns="http://www.example.org/books">
    <book address="ddd">
        <name></name>
        <author></author>
        <price></price>
    </book>
    <book address="ddd">
        <name></name>
        <author></author>
        <price></price>
    </book>
    <book>
        <name></name>
        <author></author>
        <price></price>
    </book>
</books>