Question: Given a relational schema R with attributes A, B, C and D where the functional dependencies AB -> C, C -> D, and D ->

Given a relational schema R with attributes A, B, C and

Given a relational schema R with attributes A, B, C and D where the functional dependencies AB -> C, C -> D, and D -> A are supposed to hold. Is R in BCNF? If yes, explain why. If not, list all violations. If R is NOT in BCNF, give it a lossless BCNF decomposition. Does your decomposition in (b) preserve the given functional dependencies? Explain. Give a 3NF decomposition for R. Does your decomposition in (d) preserve the given functional dependencies? Explain. Given a relational schema R with attributes A, B, C and D where the functional dependencies AB -> C, C -> D, and D -> A are supposed to hold. Is R in BCNF? If yes, explain why. If not, list all violations. If R is NOT in BCNF, give it a lossless BCNF decomposition. Does your decomposition in (b) preserve the given functional dependencies? Explain. Give a 3NF decomposition for R. Does your decomposition in (d) preserve the given functional dependencies? Explain

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Given a relational schema R with attributes A, B, C and D where the functional dependencies AB -> C, C -> D, and D -> A are supposed to hold. (20 points) Given a relational schema R with attributes...

Given a relational schema R with attributes A, B, C, and D, where functional dependencies B -> ACD and C -> D are supposed to hold. 5. (18 points) Given a relational schema R with attributes A, B, C,...

Q:Question:C, and D, where functional dependencies B -> ACD and C -> D are supposed to hold. (18 points) Given a relational schema R with attributes A, B, C, and D, where functional dependencies...

Given a relational schema R with attributes A, B, C, and D, where functional dependencies B-> ACD and C -> D are supposed to hold. (a) What are all the keys in ABCD? (b) Give example of a superkey in...

Consider a relation R with ve attributes A, B, C, D, and E. You are given the following functional dependencies: A B, BCE, and EDA. (a) Is R in BCNF? If it is not, decompose it into a collection of...

2: BCNF and 3NF (3 points) Consider the relation schema R with attributes A, B, C, and D and the following functional dependencies: ABC, ACB, B+D, BCA. (a) List all keys for R. (1 point) (b) Is R in...

2: BCNF and 3NF (1.5 points) Consider the relation schema R with attributes A, B, C, and D and the following functional dependencies: ABC, ACB, BD, BC-A. (a) List all keys for R. (0.5 point) (b) Is R...

Consider the relation schema R with attributes A, B, C, and D and the following functional dependencies: AB+C, ACB, B+D, BC-A. (a) List all keys for R. (1 point) (b) Is R in BCNF? If it is not,...

What is the purpose of normalisation ? What problems does normali- sation gets rid of? When is it used? Consider the relational schema R with key ( a, b, c ) and no alternative keys. Below all its...

it is the question of MYSQL database, please give some explain to let know how it is solved. thanks [4 marks] 2. Consider the relational schema R with key (a, b, c) and no alternative keys. Below all...

Show that T1/T0 can be expressed in terms of m2/m1 ≡ a and cos ψ ≡ y as Plot T1/T0 as a function of ψ for a = 1, 2, 4, and 12. These plots correspond to the energies of protons or...

"Consider the situation faced by the CFO of a company with a market capitalization of $500 Millions of USD, e.g. the firm has 50 million shares outstanding, so the shares are trading at $10 per...

From the 'Financial Policy at Apple, 2 0 1 3 ( A ) case study, answer the following questions: 1 . Cash Reserves: 1 . 1 Why does Apple maintain such a significant cash reserve? 1 . 2 Please justify...

For this assignment, be sure to conduct a analysis, not just answer questions. TITLE:Strategic Planning: A Tool for Strategic Thinking URL:http://idmc.ae/userfiles/file/stadies/ScenarioPlanning.pdf...

=+stock per worker, output per worker, and consumption per worker as a function of the saving rate and the depreciation rate.

=+does your table show about the relationship between the net marginal product of capital and steady-state consumption?

=+of 0 percent, 10 percent, 20 percent, 30 percent, and so on. (You will need a calculator with an exponent key for this.) What saving rate maximizes output per worker? What saving rate maximizes...