Consider a relational database schema with two relations π (π,π) andβ¦
GATE Β· 2026 Β· CS Β· Set 1 Β· Computer Science & IT
Consider a relational database schema with two relations π (π,π) and π(π,π). Let πΈ = {β¨π’β©β£βπ£ βπ€ β¨π’,π£β©βπ β§ β¨π£,π€β© βπ} be a tuple relational calculus expression.
Which one of the following relational algebraic expressions is equivalent to πΈ ?
- A.
Ξ P(R βR.P = S.X S)
- B.
Ξ P(S βS.X = R.Q R)
- C.
Ξ P(R βR.P = S.Y S)
- D.
Ξ P(S βS.Y = R.Q R)
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