Question: Write SQL expressions to do the following. Assume you are given two relations: student(name, rollno) and marks(rollno, exam, mark) a. Show names of all students

Write SQL expressions to do the following. Assume you are given two relations:

student(name, rollno) and marks(rollno, exam, mark) a. Show names of all students who have got marks in at least two exams. b. Find the names of the students with highest total marks (summed across all exams for each student).

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