Consider the following relations: Consider the following SQL query.SELECT S.Student_Name, sum(P.Marks) FROM Student S, Performance P WHERE S.Roll_No = P.Roll_No GROUP BY S.Student_NameThe number of rows that will be returned by the SQL query is ____________.

To determine the number of rows returned by the query:

1. Join Condition (S.Roll_No = P.Roll_No):

   • Roll_No = 1 (Raj) joins with two rows in Performance: (1, Math, 80) and (1, English, 70).

   • Roll_No = 2 (Rohit) joins with two rows in Performance: (2, Math, 75) and (2, Physics, 65).

   • Roll_No = 3 (Raj) joins with two rows in Performance: (3, English, 80) and (3, Math, 80).

2. Grouping by S.Student_Name:

   • The joined tuples contain only two distinct student names: 'Raj' and 'Rohit'.

   • The group for 'Raj' aggregates the marks for both Roll No 1 and Roll No 3, yielding a sum of $80 + 70 + 80 + 80 = 310$.

   • The group for 'Rohit' aggregates the marks for Roll No 2, yielding a sum of $75 + 65 = 140$.

3. Result:

   • The output of the GROUP BY query contains one row per distinct Student_Name.

   • Therefore, the number of rows returned is 2.