Exercise 4.56: Formulate compound queries that
retrieve the following information:


 the names of all people who are supervised by Ben Bitdiddle, together with
their addresses;

 all people whose salary is less than Ben Bitdiddle’s, together with their
salary and Ben Bitdiddle’s salary;

 all people who are supervised by someone who is not in the computer division,
together with the supervisor’s name and job.