1compute R1R2 2 compute R1 full outer joinR1AR2A R2SolutionR

1)compute R1*R2

2) compute R1 full outer join(R1.A=R2.A) R2

R1:

R2:

R1 x R2:

R1 full outer join(R1.A=R2.A) R2:

A	B
1	a
2	a
3	b

1)compute R1*R2 2) compute R1 full outer join(R1.A=R2.A) R2SolutionR1: R2: R1 x R2: R1 full outer join(R1.A=R2.A) R2: A B 1 a 2 a 3 b

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