stu_id, lname, fname, ssn, sex
1, Burns, Barbra, 000-01-0001, F      
2, Cambi, Vinny, 000-01-0002, M 
3, Brown, Duncan, 000-01-0003, M  
4, Smith, David, 000-01-0004, M  
5, Tomas, Timmy, 000-01-0005, M