Question 2: SQL 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:...

Database Systems
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Extracted text: Question 2: SQL 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 average age of sailors for each rating level that has at 1least two sailors. 3. Find the names and age of sailors who have reserved only blue boats and present them in an ascending order of age.