text: INSERT INTO department (id,title)
  VALUES (1,"Human Resources"),
         (2,"Engineering"),
         (3,"Legal and Accounting"),
         (4,"Sales and Marketing");
  
  
  INSERT INTO role (id, title,salary,department_id)
  VALUES (1,"Recruiter",85000,1),
         (2,"HR Specialist",65000,1),
         (3,"Junior Engineer",70000,2),
         (4,"Lead Engineer",120000,2),
         (6,"Attorney",100000,3),
         (7,"Accountant II",90000,3),
         (8,"Account Manager",95000,4),
         (9,"Marketing Specialist",85000,4);
  
  
  INSERT INTO employee (id, first_name, last_name,role_id, manager_id)
  VALUES (1,'Joanne','Martinez',2,NULL),
         (2,'Linda','Baker',6,7),
         (3, 'Luis','Segarra',3,6),
         (4 ,'Henry','Horton',4,6),
         (5 ,'Juan','Fung',4,6),
         (6 ,'Lucinda','Marvel',4,NULL),
         (7,'Jill','Hill',7,6),
         (8,'Bob','Wood',8,NULL),
         (9,'Evelyn','Cook',9,8),
         (10,'Eugene','Banks',1,1);