text: INSERT INTO departments (dept_name)
  VALUES  ('Executives'),
          ('Marketing'),
          ('Engineering'),
          ('Sales'),
          ('Product');
  
  INSERT INTO empl_roles (title, salary, department_id)
  VALUES ('CEO', 300000, 1),
          ('CTO', 200000, 1),
          ('VP of Marketing', 130000, 2),
          ('VP of Software', 180000, 3),
          ('Developer', 110000, 3),
          ('QA Engineer', 80000, 3),
          ('VP of Sales', 190000, 4),
          ('Sales Rep', 110000, 4),
          ('Product Manager', 120000, 5);
  
  INSERT INTO employees (first_name, last_name, empl_role_id, manager_id)
  VALUES ('Mario', 'Brothers', 1, NULL),
          ('Luigi', 'Brothers', 2, 1),
          ('Princess', 'Peach', 3, 1),
          ('Bowser', 'King of the Koopas', 4, 2),
          ('Wario', 'Brothers', 5, 4),
          ('Toad', 'Kinopio', 6, 4),
          ('Donkey', 'Kong', 7, 1),
          ('Princess', 'Daisy', 8, 7),
          ('King', 'Boo', 9, 4);
  