id,name,chief,age,skill 2,john,1,30,C 7,alia,1,28,C 4,eve,0,25,C++ 6,paul,4,30,--- 5,duncan,4,30,Perl 1,carl,0,20,C++ 7,alia,1,28,PHP 4,eve,0,25,C 7,alia,1,28,Python 3,dean,1,33,C++ 1,carl,0,20,Python 2,john,1,30,PHP 0,jack,0,22,Python 0,jack,0,22,C 1,carl,0,20,System Admin 4,eve,0,25,Perl 5,duncan,4,30,C