Joins

Consider the following two tables and four queries in SQL. Book ( isbn , bname), Stock ( isbn , copies) Query 1: SELECT B.isbn, S.copies FROM Book B INNER JOIN Stock S ON B.isbn =...

Consider the following relation: Student Roll_No Student_Name 1 Raj 2 Rohit 3 Raj Performance Roll_No Course Marks 1 Math 80 1 English 70 2 Math 75 3 English 80 2 Physics 65 3 Math...

Consider the relation "enrolled (student, course)" in which (student, course) is the primary key, and the relation "paid (student, amount)" where student is the primary key. Assume...

Suppose we have a database consisting of the following three relations. FREQUENTS (student, parlor) giving the parlors each student visits. SERVES (parlor, ice-cream) indicating wh...