Discussion
The most frequently used relational operation, which brings together data from two or more related tables into one resultant table, is called an equi-join.
Answer: B
Correct answer: False
The most frequently used join is the natural join, which matches on the common column and returns it once rather than twice. The equi-join is the same operation with the duplicate column retained, and it is the natural join that is wanted in nearly every practical query.
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