Create the Students and Marks tables as shown below and then perform the given SQL queries: a) Students table: Roll_no 1 2 3 4 5 b) Marks table: Roll_no 1 1 2 3 4 6 Name Brook Alex Allen Robin Calvin Course OS CN CN OS DS DS Address Gurugram Noida Noida Delhi Delhi 95 90 85 98 Age 19 Score 87 95 19 21 20 18 1. Display the Union set of Roll numbers. 2. Display the Intersection set of Roll numbers. 3. Display the Roll number and Names of students whose score is greater than 90 in any course. (Use EXISTS operator)

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