Comment:-Same procedure can be followed in other parts too....I have a time limit to solve question therefore i am able to solve two parts with 4 subparts each....
Given the following relation schemas and the sets of FD's: a- R(A,B,C,D) F={ABẠC,C7D, D´A, BC+C} b-...
For the following relation schema and set of FD's R(A,B,C,D) with FD's AB->C, B->D, CD->A, AD->B Indicate the BCNF violations, and decompose the relations into relations that are in BCNF.
Language: SQL - Normalization and Functional Dependencies Part 4 Normalization and Functional Dependencies Consider the following relation R(A, B, C, D)and functional dependencies F that hold over this relation. F=D → C, A B,A-C Question 4.1 (3 Points) Determine all candidate keys of R Question 4.2 (4 Points) Compute the attribute cover of X-(C, B) according to F Question 43 (5 Points) Compute the canonical cover of F.Show each step of the generation according to the algorithm shown in class....
Identify, in the list below, a row in the result. Dragons B) Giants C) Lions D) Ham Fighters 26. If all function dependencies in a table are "very good" or "bad", the table is in A) 1NF B) 2NF C) 3NF D) BCNF 27·Determine the normal form for the relation R(ABCD) and FD's: AD ? C; D A) 1NF B) 2NF C) BCNF D) 3NF -28. Which of the following is not a candidate key for R(ABCD) FD's: BD ?...
my choices for these are wrong. 10 points QUESTION 3 Given R=(A, B, C) is a schema and F = {2C-A AB) is a set of FDs that hold on R. Which of the following statements is not true? d=(AB. AC) is a decomposition of that is in BCNF. O Ris in 3NF O BC is a candidate key for R Ris in BCN 10 points QUESTION 4 Given R= (A. 3. CD. E) is a schema and F= (A...
Consider a relation R(A,B,C,D,E) with the following functional dependencies: 8. AB C BCD CDE DEA (a) Specify all candidate keys for R. (b) Which of the given functional dependencies are Boyce-Codd Normal Form (BCNF) violations'? (c) Give a decomposition of R into BCNF based on the given functional dependencies. (d) Give a different decomposition of R into BCNF based on the given functional dependencies. (e) Give a decomposition of R into 3NF based on the given functional dependencies. Consider a...
Write the complete proof. Consider the relational schemas given below and the respective sets of functional dependencies valid in the schemas For each one of the relational schemas, determine the highest normal form, which is valid for a schema. Justify your answer If a schema is not in BCNF, then decompose it into a minimum number of schemas so that each one of them is in BCNF. Justify your answers. Justification must include the derivations of minimal keys from the...
Consider a relation R(A,B,C,D,E) with the following functional dependencies: 8. AB C BCD CDE DEA (a) Specify all candidate keys for R. (b) Which of the given functional dependencies are Boyce-Codd Normal Form (BCNF) violations'? (c) Give a decomposition of R into BCNF based on the given functional dependencies. (d) Give a different decomposition of R into BCNF based on the given functional dependencies. (e) Give a decomposition of R into 3NF based on the given functional dependencies.
Assume that R(A, B, C, D, E, F) has been decomposed into S(A, C, E, F) and other relations. If the dependencies for R are: AB rightarrow C, C rightarrow E, E rightarrow D, D rightarrow F, F rightarrow D. (a) Find ALL non-trivial functional dependencies that hold in S (b) Determine the keys and superkeys of S (c) For each one of your functional dependencies from part a) indicate if it is a BCNF violation, a 3NF violation or...
4. (40 points) Identify the following relations that are in Third normal form (3NF)? If it is in 3NF, is it in BCNF? You must explain your answer to receive points. Also, for each question, pick one FD not in BCNF and decompose R into tables if it is not in BCNF. (2) R(ABCD) FD's: AB-»C; ABD->C; ABC-> D; AC-ID (4) R(ABCD) FD's: C- B;A->B; CD -»A; BCD (5) R(ABCD) FD's: AD C;D-A;A-C;ABC A D, 4. (40 points) Identify the...
4. (40 points) Identify the following relations that are in Third normal form (3NF)? If it is in 3NF, is it in BCNF? You must explain your answer to receive points. Also, for each question, pick one FD not in BCNF and decompose R into tables if it is not in BCNF (1) R(ABCD) FD's: ACD B;AC D D C;ACB (2) R(ABCD) FD's: AB C; ABD C;ABC D;ACD (3) R(ABCD) FD's: AB; B A;A D D B (4) R(ABCD) FD's:...