text: INSERT INTO `department` (`name`)
  VALUES ("Sales"),
         ("Human Resources"),
         ("Administration"),
         ("Finance"),
         ("Warehouse");
  
  
  INSERT INTO `role` (`title`, `salary`, `department_id`)
  VALUES ("Manager", "120000", 1),
         ("Sales Executive", "80000", 2),
         ("Coordinator", "60000", 3),
         ("Account Manager", "70000", 4);
  
  
  INSERT INTO `employee` (`first_name`, `last_name`, `role_id`, `manager_id`)
  VALUES ("Shane", "Smith", 2, NULL),
         ("Lucy", "Taj", 4, 1),
         ("Kelsey", "Jones", 4, 1),
         ("Tim", "Porter", 1, 1),
         ("Sue", "Lime", 3, 2),
         ("Troy", "Harbor", 3, 2);