Sample document: http://www.bn.com/bib.xml

DTD:

<!ELEMENT bib  (book* )>
<!ELEMENT book  (title,  (author+ | editor+ ), publisher, price )>
<!ATTLIST book  year CDATA  #REQUIRED >
<!ELEMENT author  (#PCDATA)>
<!ELEMENT editor  (#PCDATA)>
<!ELEMENT title  (#PCDATA )>
<!ELEMENT publisher  (#PCDATA )>
<!ELEMENT price  (#PCDATA )>

Sample Data

Here is the data found at http://www.bn.com/bib.xml:

<bib>

    <book year="1994">
        <title>TCP/IP Illustrated</title>
        <author>Stevens, W.</author>
        <publisher>Addison-Wesley</publisher>
        <price> 65.95</price>
    </book>
 
    <book year="1992">
        <title>Advanced Programming in the Unix environment</title>
        <author>Stevens, W.</author>
        <publisher>Addison-Wesley</publisher>
        <price>65.95</price>
    </book>
 
    <book year="2000">
        <title>Data on the Web</title>
        <author>Abiteboul, Serge</author>
        <author>Buneman, Peter</author>
        <author>Suciu, Dan</author>
        <publisher>Morgan Kaufmann Publishers</publisher>
        <price> 39.95</price>
    </book>
 
    <book year="1999">
        <title>The Economics of Technology and Content for Digital TV</title>
        <editor>Gerbarg, Darcy</editor>
        <publisher>Kluwer Academic Publishers</publisher>
        <price>129.95</price>
    </book>
 
</bib>

Sample document: http://www.amazon.com/reviews.xml

DTD:

<!ELEMENT reviews (entry*)>
<!ELEMENT entry   (title, price, review)>
<!ELEMENT title   (#PCDATA)>
<!ELEMENT price   (#PCDATA)>
<!ELEMENT review  (#PCDATA)>
 

Sample data

Here are the contents of "http://www.amazon.com/reviews.xml":

<reviews>
    <entry>
        <title> Data on the Web</title>
        <price>34.95</price>

        <review>
               A very good discussion of semi-structured database
               systems and XML.
        </review>
    </entry>
 
    <entry>
        <title> Advanced Programming in the Unix environment</title>

        <price>65.95</price>
        <review>
               A clear and detailed discussion of UNIX programming.
        </review>
    </entry>
 
    <entry>

        <title>TCP/IP Illustrated</title>
        <price>65.95</price>
        <review>
               One of the best books on TCP/IP.
        </review>

    </entry>
 
</reviews>