Question $2$: SQL $(20)$

Please see the following tables. Solve the questions with nested queries and aggregation

operators.

Tables used in this note:

Sailors$($sid: integer, sname: string, rating: integer, age: real$)$;

Boats$($bid: integer, bname: string, color: string$)$;

Reserves$($sid: integer, bid: integer, day: date$).$

$1.$Find the name and the age of the youngest sailor.

$2.$Find the names and age of sailors who have reserved only blue boats and present them in an

ascending order of age.

Fina the colors of boats that have been reserved more than the average number of

reservations across all the boats.