Q7-a

Suppose we have a database consisting of the following three relations. $\text{FREQUENTS (student, parlor)}$ giving the parlors each student visits. $\text{SERVES (parlor, ice-cream)}$ indicating what kind of ice-creams each parlor serves. $\text{LIKES (student, ice-cream)}$ indicating what ice-creams each student likes. (Assume that each student likes at least one ice-cream and frequents at least one parlor) Express the following in SQL: Print the students that frequent at least one parlor that serves some ice-cream that they like.