The day and month are not known, and so it makes sense to have an element that only requires the year : year « XML Schema « XML Tutorial






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  3. year
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://www.java2s.com" xmlns="http://www.java2s.com"
  elementFormDefault="qualified">
  
  <xs:element name="last_seen" type="xs:year" />

</xs:schema>


File: Data.xml

<?xml version="1.0"?>
<last_seen>1950</last_seen>








3.52.year
3.52.1.The day and month are not known, and so it makes sense to have an element that only requires the year