Question: CSCI 456/556-Adv. Daabase Applications s. (30 points) Three relation instances RI, R2, and R3 are as follows. R3 R2 R1 6 3 2 4 Answer

CSCI 456/556-Adv. Daabase Applications s. (30 points) Three relation instances RI, R2, and R3 are as follows. R3 R2 R1 6 3 2 4 Answer the following questions i.(2 points) R4 := Ri-R2 ? ii. (2 points) R5: RIR2-? ! iii. (6 points) R6 := JOIN RIA

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