A、To find the tax percentage for each of the employees.

B、To list the name, job id, and manager name for all the employees.

C、To find the name, salary, and department name of employees who are not working with Smith.

D、To find the number of employees working for the Administrative department and earning less then 4000.

E、To display name, salary, manager ID, and department name of all the employees, even if the employees do not have a department ID assigned.