Functional-Dependency
August 29, 2024Database-Management-System
August 29, 2024Database-Management-System
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Question 431
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Which of the following has the same expressive power with regard to relational query language?
(a) Relational algebra and Domain relational calculus
(b) Relational algebra and Tuple relational calculus
(c) Relational algebra and Domain relational calculus restricted to safe expression
(d) Relational algebra and Tuple relational calculus restricted to safe expression
(a) Relational algebra and Domain relational calculus
(b) Relational algebra and Tuple relational calculus
(c) Relational algebra and Domain relational calculus restricted to safe expression
(d) Relational algebra and Tuple relational calculus restricted to safe expression
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(a) and (b) only
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(c) and (d) only
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(a) and (c) only
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(b) and (d) only
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Question 431 Explanation:
Relational algebra, Domain relational calculus restricted to safe expression and Tuple relational calculus restricted to safe expression have the same expressive power.
Correct Answer: B
Question 431 Explanation:
Relational algebra, Domain relational calculus restricted to safe expression and Tuple relational calculus restricted to safe expression have the same expressive power.