text: INSERT INTO departments (departmentName) VALUES ("Accounting");
  INSERT INTO departments (departmentName) VALUES ("Sales");
  
  INSERT INTO roles (title, salary, department_id) VALUES ("Office head", 70000, 0);
  INSERT INTO roles (title,salary,department_id) VALUES ("Marketer", 60000,1);
  INSERT INTO roles (title, salary, department_id) VALUES("Salesman", 30000,1);
  
  