Match-the-following
August 29, 2024Database-Management-System
August 29, 2024Database-Management-System
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Question 346
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With regard to the expressive power of the formal relational query languages, which of the following 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 these
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Question 346 Explanation:
We can’t just simply say that Relational algebra has the same power as relational calculus,because relational calculus has some unsafe state . So the correct statement will be Relational algebra has the same power as safe relational calculus.
Correct Answer: C
Question 346 Explanation:
We can’t just simply say that Relational algebra has the same power as relational calculus,because relational calculus has some unsafe state . So the correct statement will be Relational algebra has the same power as safe relational calculus.