[solved] – Question 94836

For the relations s and r in your study manual of our chapter 2 (i.e., joining two relations), suppose we type a collection of relational algebra queries, and get the following results.

A B C D E

A 2 a 10 B

B 2 a 10 b

i. Please explain how this happened? (10 Marks)

ii. If you think this result could happen in practice, please write the corresponding relational algebra queries; otherwise, please explain why. (15 Marks)

Expert Answer

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Answer to For the relations s and r in your study manual of our chapter 2 (i.e., joining two relations), suppose we type a collection of relational algebra queries….