Consider the following two relations R1 a 2 4 2 3 2 4 b 4 1 8 8 5 3 2 6 2 1 7 6 Rl c R2 d R2 b 8 4 4 1 d 7 8 3 2 Evaluate each of the following relational algebra expressions (i e , show the result relation) (a) Tac (az2 OR c 5 (R1)), where and denote the project and select operations, respectively (b) Ra 3(R1) R2, where 4 denotes the 0 join operation (c) P(a e,d) (a,b 4,d (R1 R2)), where p, , and denote the rename operation, the (generalized) project, and left outer (natural) join, respectively Consider the following two relations R1 a 2 4 2 3 2 4 b 4 1 8 8 5 3 2 6 2 1 7 6 Rl c R2 d R2 b 8 4 4 1 d 7 8 3 2 Evaluate each of the following relational algebra expressions (i e , show the result relation) (a) Tac (az2 OR c 5 (R1)), where and o denote the project and select operations, respectively (b) Ra 3(R1) R2, where 4 denotes the 0 join operation (c) P(a e,d) (Ta, b 4,d (R1 R2)), where p , T, and denote the rename operation, the (generalized) project, and left outer (natural) join, respectively

Question

Consider the following two relations  R1 a 2 4 2 3 2 4 b 4 1 8 8 5 3 2 6 2 1 7 6 Rl c R2 d R2 b 8 4 4 1 d 7 8 3 2 Evaluate each of the following relational algebra expressions (i e , show the result relation)  (a) Tac (az2 OR c 5 (R1)), where and denote the project and select operations, respectively  (b) Ra  3(R1) R2, where 4 denotes the 0 join operation  (c) P(a e,d) (a,b 4,d (R1 R2)), where p, , and   denote the rename operation, the (generalized) project, and left outer (natural) join, respectively  Consider the following two relations  R1 a 2 4 2 3 2 4 b 4 1 8 8 5 3 2 6 2 1 7 6 Rl c R2 d R2 b 8 4 4 1 d 7 8 3 2 Evaluate each of the following relational algebra expressions (i e , show the result relation)  (a) Tac (az2 OR c 5 (R1)), where and o denote the project and select operations, respectively  (b) Ra  3(R1) R2, where 4 denotes the 0 join operation  (c) P(a e,d) (Ta, b 4,d (R1 R2)), where p , T, and   denote the rename operation, the (generalized) project, and left outer (natural) join, respectively

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The image shows two relations R1 and R2 and three relational algebra expressions to ...

Question: Consider the following two relations: R1 a 2 4 2 3 2 4 b 4 1 8 8 5 3 2 6 2 1

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