With regards to the expressive power of the formal relational query languages, which of the following statements is true?a.Relational algebra has the same power as relational calculusb.None of the abovec.Relational algebra is more powerful than relational calculusd.Relational algebra has the same power as safe relational calculus
Question
With regards to the expressive power of the formal relational query languages, which of the following statements is true?a.Relational algebra has the same power as relational calculusb.None of the abovec.Relational algebra is more powerful than relational calculusd.Relational algebra has the same power as safe relational calculus
Solution
The correct answer is a. Relational algebra has the same power as relational calculus. This means that any query that can be expressed in relational algebra can also be expressed in relational calculus, and vice versa. The two languages are equivalent in terms of their ability to express queries, even though they have different syntax and semantics.
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