20. Display the depart numbers with more than three employees in each dept. 21. Display the various jobs along with total salary for each of the jobs where total salary is greater than 40000. 22. Display the employee number and name for employee working as clerk and earning highest salary among clerks. 23. Display the jobs found in department 10 and 20 Eliminate duplicate jobs. 24. Display the details of those who do not have any person working under them 25. Display the Job groups having total salary greater than the maximum salary for managers. HR DATABASE SCHEMA FIRST COLUMN IS TABLE NAME, PK = PRIMARY KEY, FK = FOREIGN KEY