Let R and S be two relations with the following schema
R(P−−,Q−−,R1,R2,R3)
S(P−−,Q−−,S1,S2)
where {P,Q} is the key for both schemas?
R:{⟨"1","abc","p1","p2","p3"⟩,
⟨"2","xyz","p1","p2","p3"⟩}
S:{⟨"1","abc","q1","q2","q3"⟩
⟨"2","def","q1","q2","q3"⟩
WHat is R *S? WHERE * IS NATURAL JOIN.