sql algerbriac relations

Directions Consider the following table definition, where the primary keys are underlined. Give an expression in relational algebra for each of the following queries. Athlete (ID integer, aName string, ranking integer, age integer) Event (EID string, eName string, eLocation string) Competes (aID integer, eID string, sport string, year integer) 1. Find the names of athletes who have competed in event 15k8P (eiD = '18k8P') 2. Find the names of athletes who have competed in the event XGames (eName = 'XGames') 3. Find the names of the events an athlete named George competed in (aName 'George') 4. Find the names of the athletes who have competed in at least one Event 5. Find the names of athletes who have competed in 'Dew Tour' or 'VPS' 6. Find the names of athletes who have competed in both 'Dew Tour' and 'VPS' 7. Find the alD of athletes over the age of 14 who have not competed in 'VPS' 8. Find the names of any athletes who competed in all events 9. Think of an additional query, write the query, and share the query on the discussion board 10. Try to write the Relational algebra expression for your query 11. Try to write the Relational algebra expression for one of the queries on the course Discussion board that was posted by another student. EVENT eID 001Sk8P 002 Moto eName X Games X Games eLocation Minneapolis Minneapolis ATHLETE ald aName age Luke Alex Competes alD osition 1 year 2017 10 elD p 002 Moto 001Sk8P1 001 Sk8P1 Sport moto Sk8 Sk8 20 2017 20 2018 EQUIPMENT alD 10 1 modelIDERE 23 Model Bike 125 Brand KTM