Database Software

I have to load XML file data into a Oracle staging table using External Tables.

Let's say below is my XML file

<Header>
<A_CNT> 10 </A_CNT>
<E_CNT> 10 </E_CNT>
<AF_CNT> 10 </AF_CNT>
</Header>
<Students>
  <Students-Details>
    <Student_info>
      <Single_Info>
        <ID>18</ID>
        <City>NewYork</City>
        <Country>US</Country>
        <Name_lst>
          <Student_name>
            <First_name>Samuel</First_name>        
            <Last_name>Paul</Last_name>
            <DOB>19871208</DOB>
            <RecordStatus>Current</RecordStatus>
          </Student_name>
          <Student_name>
            <First_name>Samuel</First_name>        
            <Last_name>Paul</Last_name>
            <DOB>19871208</DOB>

            <TerminationDt>20050812</TerminationDt>
            <RecordStatus>History</RecordStatus>
          </Student_name>
        </Name_lst>
        <Personal_Info>
          <Gender>Male</Gender>
          <Age>27</Age>
        </Personal_Info>   
      </Single_Info> 
     </Student_info>

     <Student-Enrol>
      <Class-A>
       <Info>
        <Detail>
          <Student-ID>18</Student-ID>
          <Major> EE </Major>
          <Course-Grades>
             <Course>VLSI</course>
             <Grade>3.0</Grade>
          </Course-Grades>
          <Course-Grades>
             <Course>NanoTechnology</course>
             <Grade>4.0</Grade>
          </Course-Grades>
        </Detail>
        <Detail>
          <Student-ID>18</Student-ID>
          <Major> CE </Major>
        </Detail>
       </Info>
      <Class-A>
    <Student_Enrol>
  <Students-Details>
<Students>

I have to load this XML file data into one single table using an External Table. Could anyone please help me with coding.

Thanks,

Reva