[Solved] : Question 136290

For the relations s and r in your study manual of our chapter 1(i.e., joining two relations), suppose we type a collection of relational algebra queries, and get the following results.

.ABCDE
A2a10B
B2a10b

Please explain how this happened? If you think this result could happen in practice, please write the corresponding relational algebra queries; otherwise, please explain why.


Expert Answer


Answer to : Question 136290

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