text: INSERT INTO departments (Department)
  VALUES ("Human Resources"), ("Engineering"), ("Marketing"), ("Sales");
  
  INSERT INTO roles (Title, Salary, department_id)
  VALUES 
  ("HR Director", 140000.00, 1),
  ("HR Representative", 76000.00, 1),
  ("Engineering Manager", 180000.00, 2), 
  ("Web Developer", 105000.00, 2), 
  ("PR Director", 120000.00, 3),
  ("Research Analyst", 85000.00, 3),
  ("Sales Director", 145000.00, 4),
  ("Direct Sales Representative", 62000.00, 4);
  
  INSERT INTO employees (first_name, last_name, role_id, manager_id)
  VALUES
  ("Gladys", "Leeman", 1, null),
  ("Becky", "Leeman", 2, 1),
  ("Jerome", "Chenette", 3, null),
  ("Ryan", "Kirkland", 4, 3),
  ("Coleman", "Buffa", 4, 3),
  ("Annette", "Atkins", 5, null),
  ("Amber", "Atkins", 6, 5),
  ("Loretta", "Lynn", 7, null),
  ("Leslie", "Miller", 8, 7);
  