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1. Prove that IR2 of the Armstrong Inference Rules is correct (sound). We did that for IR3 in class. Consider F = {BC -> D, B -> E, CE -> D, E -> CA, BF -> G}and R(A,B,C, D,E,F,G) for the next 6 questions. 2. Use all three of Armstrong Rules to "infer" one new FD. 3. Find a minimal cover for F. 4. Find all many keys for R. 5. Find a 3NF decomposition for R that is dependency preserving and has lossless join. 6. Find a BCNF decomposition for R that has lossless join. 7. Apply the lossless join test algorithm on the decomposition of Q6 or the decomposition of Q7 to verif that the decomposition is a lossless join decomposition. You do not need to do that for both Q6 and Q7

1. Prove that IR2 of the Armstrong Inference Rules is correct (sound). We did that for IR3 in class. Consider F = {BC -> D, B -> E, CE -> D, E -> CA, BF -> G}and R(A,B,C, D,E,F,G) for the next 6 questions. 2. Use all three of Armstrong Rules to "infer" one new FD. 3. Find a minimal cover for F. 4. Find all many keys for R. 5. Find a 3NF decomposition for R that is dependency preserving and has lossless join. 6. Find a BCNF decomposition for R that has lossless join. 7. Apply the lossless join test algorithm on the decomposition of Q6 or the decomposition of Q7 to verif that the decomposition is a lossless join decomposition. You do not need to do that for both Q6 and Q7

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1. Prove that IR2 of the Armstrong Inference Rules is correct (sound). We did that for IR3 in class. Consider F = {BC -> D, B -> E, CE -> D, E -> CA, BF -> G}and R(A,B,C,D,E,F,G) for the next 6 questions. 2. Use all three of Armstrong Rules to "infer" one new FD. 3. Find a minimal cover for F. 4. Find all many keys for R. 5. Find a 3NF decomposition for R that is dependency preserving and has lossless join. 6. Find a BCNF decomposition for R that has lossless join. 7. Apply the lossless join test algorithm on the decomposition of Q6 or the decomposition of Q7 to verify that the decomposition is a lossless join decomposition. You do not need to do that for both Q6 and Q7.
Transcribed Image Text:1. Prove that IR2 of the Armstrong Inference Rules is correct (sound). We did that for IR3 in class. Consider F = {BC -> D, B -> E, CE -> D, E -> CA, BF -> G}and R(A,B,C,D,E,F,G) for the next 6 questions. 2. Use all three of Armstrong Rules to "infer" one new FD. 3. Find a minimal cover for F. 4. Find all many keys for R. 5. Find a 3NF decomposition for R that is dependency preserving and has lossless join. 6. Find a BCNF decomposition for R that has lossless join. 7. Apply the lossless join test algorithm on the decomposition of Q6 or the decomposition of Q7 to verify that the decomposition is a lossless join decomposition. You do not need to do that for both Q6 and Q7.
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