hello world;
i want to know how i represent or write "IN" in relational algebra;
lets if i have the following query; then how i write in relational algebra

select CourseTitle, Amount
from DegreeCourse, Fee
where DegreeCourse.FeeType = Fee.FeeType and
Amount IN ( select MAX(Amount) from Fee );

Why you need to use IN , as MAX() will return a single record ?

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