Question

    Which of the following represents a query in tuple calculus that selects all tuples where the "Age" attribute is greater than 30?

    A {T | ∃ T(Age > 30)} Correct Answer Incorrect Answer
    B {T | T(Age > 30)} Correct Answer Incorrect Answer
    C {T | ∃ Age > 30} Correct Answer Incorrect Answer
    D {T | Age > 30} Correct Answer Incorrect Answer

    Solution

    {T | ∃ T(Age > 30)}

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