Question: (.) Consider the following three relations A, B, and C for this part: C A Attr Attr2 John A John B Mary A Mary

(.) Consider the following three relations A, B, and C for this

(.) Consider the following three relations A, B, and C for this part: C A Attr Attr2 John A John B Mary A Mary C Mary D ST Attr3 15 30 20 35 50 ? B Attr4 10 20 30 40 50 Attr5 a b C d e (D = John A John B John B Mary A Mary Mary C Mary C Mary D Mary D Mary D Mary D a a b a a b C a b C d Use the eight fundamental Relational Algebra operators to represent/implement/express the new relational operator "?".

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