Which combination below would make the following statement correct?
A) Selection and join : projection and union
B) Selection and projection : join and intersection
C) Projection and union : intersection and difference
D) Intersection and difference : selection and projection

Question

Quizplus · Accepted Answer

The correct combination is selection and projection : join and intersection because selection and projection are unary operations that operate on a single relation, while join and intersection are binary operations that combine two relations.

Which Combination Below Would Make the Following Statement Correct