   firs_name VARCHAR (50) NOT NULL,
   last_name VARCHAR (50) NOT NULL,
   department_id integer NOT NULL,
-  type types NOT NULL,
-  boss_id integer NULL,
+  boss_id serial NOT NULL,
 
   FOREIGN KEY (department_id) REFERENCES employee_department
       ON DELETE CASCADE ON UPDATE CASCADE,

INSERT INTO employee_employee_hobby (employee_id,employee_hobby_id) VALUES ('4','1');
INSERT INTO employee_employee_hobby (employee_id,employee_hobby_id) VALUES ('4','2');

INSERT INTO employee_employee_hobby (employee_id,employee_hobby_id) VALUES ('5','3');
INSERT INTO employee_employee_hobby (employee_id,employee_hobby_id) VALUES ('5','1');




-- NOTE: Please, don't add sentence to create database in this script file.
--       You can create database locally to test it.
--       Consider add ';' at end sentence.

CREATE TABLE employee_department(
  id serial PRIMARY KEY,
