Evaluating XPath Expresssions

XPath	Result of XPath Evaluation
340 instance of xs:integer	true
340 instance of xs:positiveInteger	false
xs:positiveInteger(340) instance of xs:integer	true
//Member[1]/MembershipFee/data(.) instance of xs:integer	false
//Member[1]/MembershipFee/data(.) instance of xs:untypedAtomic	true
//Member[1]/MembershipFee instance of xs:untypedAtomic	false
xs:integer(//Member[1]/MembershipFee) instance of xs:integer	true

The XML Document

<FitnessCenter>
        <Member id="1" level="platinum">
                <Name>Jeff</Name>
                <Phone type="home">555-1234</Phone>
                <Phone type="work">555-4321</Phone>
                <FavoriteColor>lightgrey</FavoriteColor>
                <MembershipFee>340</MembershipFee>
        </Member>
        <Member id="1" level="platinum">
                <Name>Jeff</Name>
                <Phone type="home">555-1234</Phone>
                <Phone type="work">555-4321</Phone>
                <FavoriteColor>lightgrey</FavoriteColor>
                <MembershipFee>340</MembershipFee>
        </Member>
        <Member id="1" level="platinum">
                <Name>Jeff</Name>
                <Name>Jeff</Name>
                <Phone type="home">555-1234</Phone>
                <Phone type="work">555-4321</Phone>
                <FavoriteColor>lightgrey</FavoriteColor>
                <MembershipFee>340</MembershipFee>
        </Member>
        <Member id="2" level="gold">
                <Name>David</Name>
                <Phone type="home">383-1234</Phone>
                <Phone type="work">383-4321</Phone>
                <FavoriteColor>lightblue</FavoriteColor>
                <MembershipFee>500</MembershipFee>
        </Member>
        <Member id="3" level="platinum">
                <Name>Roger</Name>
                <Phone type="home">888-1234</Phone>
                <Phone type="work">888-4321</Phone>
                <FavoriteColor>lightyellow</FavoriteColor>
                <MembershipFee>340</MembershipFee>
        </Member>
</FitnessCenter>