<!-- Declaring Global Element 'Major' -->
<xsd:element name = "Major">
   <xsd:simpleType>
      <!-- Restricting the values to a set of value using 'enumeration' -->
      <xsd:restriction base = "xsd:string">
         <xsd:enumeration value = "CS"/>
         <xsd:enumeration value = "CSCN"/>
         <xsd:enumeration value = "EE"/>
         <xsd:enumeration value = "EECN"/>
      </xsd:restriction>
   </xsd:simpleType>
</xsd:element>