text: USE employee_tracker
  
  INSERT INTO department (id, name)
  VALUES 
      (1, "Manager"),
      (2, "HR"),
      (3, "IT");
  
  INSERT INTO role (id, title, salary, department_id)
  VALUES 
      (1, "Manager", 200000, 1),
      (2, "Employee", 150000, 2);
  
  
  INSERT INTO employee (id, first_name, last_name, role_id, manager_id)
  VALUES 
      (1, "Jeremy", "Rice", 1, Null),
      (2, "Mckenzie", "Bergon", 2, 1);