The operation denoted by allows us to find tuples that are in one relation but are not in another

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Answer: b) Set-difference
Set Difference (−)
The result of set difference operation is tuples, which are present in one relation but are not in the second relation.
Notation − r − s
Finds all the tuples that are present in r but not in s.
∏ author (Books) − ∏ author (Articles)
Output − Provides the name of authors who have written books but not articles.

Answerd By:prajwalamv

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