GATE 2002
March 19, 2025GATE 2002
March 19, 2025GATE 2002
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Question 20
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With regard to the expressive power of the formal relational query languages, which of the following statements is true?
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Relational algebra is more powerful than relational calculus.
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Relational algebra has the same power as relational calculus.
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Relational algebra has the same power as safe relational calculus.
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None of the above.
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Question 20 Explanation:
Relational algebra has the same power as safe relational calculus.
A query can be formulated in safe Relational Calculus if and only if it can be formulated in Relational Algebra.
A query can be formulated in safe Relational Calculus if and only if it can be formulated in Relational Algebra.
Correct Answer: C
Question 20 Explanation:
Relational algebra has the same power as safe relational calculus.
A query can be formulated in safe Relational Calculus if and only if it can be formulated in Relational Algebra.
A query can be formulated in safe Relational Calculus if and only if it can be formulated in Relational Algebra.