<student db>

    <student id="1234">

        <valid>

            <Name>Syed Ahmed</Name>

            <major>CIS</major>

            <gpa>3.2</gpa>

            <validity from="09-01-2004" to="08-31-2005"/>

        </valid>

        <valid>

            <Name>Syed Ahmed</Name>

            <major>MIS</major>

            <gpa>3.5</gpa>

            <validity from="09-01-2005" to="99-99-9999"/>

        </valid>

     </student>

<student id="2546">

        <valid>

            <Name>Linda Perl </Name>

            <major>Maths</major>

            <gpa>2.8</gpa>

            <validity from="09-01-2000" to="05-01-2003"/>

        </valid>

        <valid>

            <Name>Linda Perl</Name>

            <major>MIS</major>

            <gpa>3.8</gpa>

            <validity from="06-01-2003" to="99-99-9999"/>

        </valid>

     </student>

</studentdb>