text: DROP DATABASE IF EXISTS employee_db;
  CREATE DATABASE employee_db;
  
  USE employee_db;
  
  CREATE TABLE deparment (
      id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
      name VARCHAR(30) NOT NULL,
  );
  
  CREATE TABLE role (
      id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
      role_title VARCHAR(30) NOT NULL,
      salary DECIMAL NOT NULL,
      deparment_id INT,
  );
  
  CREATE TABLE employee (
      id INT PRIMARY KEY AUTO_INCREMENT,
      first_name VARCHAR(30)
  );