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Relational Algebra

Racer Car id C1 C2 C3 Manufacturer Hourse power Mercedes Ferrari Mercedes 700 gender Birth yea 1984 1000 50 pam 1982 1980 2 Alice Result Race id Type Location UK R1 R1 2 R13 E3 R13 375 R2RallyCross Portugal 600 F1 Italy Schema: Racer: (A id, Name, gender, birth_year) Race (r id, type,location) Result (result id, c_id, A_id,R_id, time) c_id is a foreign key for car and A_id is foreign key for Racer and R id is a foreign key for Race Car (c id, make, horse power) Part I Relational Algebra (27 points) Question 1.1 (10 Points) Write a relational algebra expression that returns the winners name for all races Question I.2 ( 9 Points) Write a relational algebra expression that returns the female racer 's name who's born after 1984 with their average race time. Question 1.3 (8 Points) Write a relational algebra expression that returns the racer's name that dro Mercedes' make cars during one of their race