data types

Hi
    I have schema like this:
<xs:element name="date">
<xs:element name= "year" type="xs:integer"/>
....................
..................
</xs:emement>

Now I have xml file like this.
<date>
<year>2000</year>
<month>12</date>
.......
</date>

Now, I am parsing xml file using DOM. How can I get the data type for year,
month etc?????

Any help will be greatly appreciated!!

Thanks
Bhaskar