use notas;
load data infile "/home/luis/public_html/notas/alumnos.txt"
  into table alumnos
  fields terminated by '@';
load data infile "/home/luis/public_html/notas/asignaturas.txt"
  into table asignaturas
  fields terminated by '@';
load data infile "/home/luis/public_html/notas/examenes.txt"
  into table examenes
  fields terminated by '@';
load data infile "/home/luis/public_html/notas/notas.txt"
  into table notas
  fields terminated by '@';
