Homework Answers
Answer)
26) Functional dependencies are important to identify the bad and the good.
The good and bad depends on the table structure but most of the cases it is the 2NF form.
Hope this answer helps. :) Happy to help.
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Identify, in the list below, a row in the result. Dragons B) Giants C) Lions D)...
4. (40 points) Identify the following relations that are in Third normal form (3NF)? If it is in ...
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:...
Imagine a single poorly-designed table, r(R), with attributes A, B, C, D, E, F, G, H,...
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Consider a relation R with five attributes A, B, C, D, and E. You are given...
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4. (40 points) Identify the following relations that are in Third normal form (3NF)? If it is in ...
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4. (40 points) Identify the...
MySQL: Consider the following abstract relational schema: (A, B, C, D, E, F) Now assume the...
MySQL: Consider the following abstract relational schema: (A, B, C, D, E, F) Now assume the following functional dependencies: A -> B, C, D, E, F C -> B Note: This implies that A is a key. Is this database in 1NF, 2NF, 3NF, or BCNF? Why?
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 o...
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....
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-...
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For each relation: a) List Functional Dependencies. b) Based on the given primary key, is the...
For each relation: a) List Functional Dependencies. b) Based on the given primary key, is the relation in 1NF, 2NF, or 3NF? Why or why not? c) Normalize the relation successively into 3NF, if it is not already in 3NF. FACULTY(FacNo, FacName, DeptNo, DeptName, DeptLoc, InsurPlanNo, InsurPlanDesc) ORDER(OrdNo, OrdDate, CustNo, PartNo, Qty, UnitPrice)
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 No...
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...
Consider a relation R(A,B,C,D,E) with the following functional dependencies: 8. AB C BCD CDE DEA (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.
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:...
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...
Language: SQL - Normalization and Functional
Dependencies
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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...
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.
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