Question: Consider a Relation R with five attributes A, B, C, D, and E. The following dependencies are given: AB C, BC D, CD E, DE

Consider a Relation R with five attributes A, B, C, D, and E. The following dependencies are given:

AB C,

BC D,

CD E,

DE A.

1. List all keys for R. Do not list superkeys that are not a key.

2. Is R in 3NF? Briefly explain why.

3. Is R in BCNF? If yes, please explain why. Otherwise, decompose R into relations that are in BCNF.

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!

Q:

Plz help! Consider a Relation R with five attributes A, B, C, D and E. The following dependencies are given: AB rightarrow C, BC rightarrow D. CD rightarrow E, DE rightarrow A. List all keys for R....

Q:

Consider a relation R with five attributes A, B, C, D, and E. You are given the following functional dependencies: A --> B, BC --> E, and ED --> A. Is R in BCNF? If it is not, decompose it into a...

Q:

1: BCNF and 3NF (3 points) Consider a relation R with five attributes A, B, C, D, and E. You are given the following functional dependencies: A + B, BC-E, and ED_A. (a) List all keys for R. (1 point)...

Q:

Consider a relation R with five attributes A, B, C, D, and E. You are given the following functional dependencies: A B, BCE, and EDA. (a) List all keys for R. (1 point) (b) Is R in BCNF? If it is...

Q:

Consider a relation R with five attributes A, B, C, D, and E. You are given the following functional dependencies: A --> B, BC --> E, and ED --> A. Convert this to BCNF.

Q:

Objective: this assignment is designed to let you have a hands-on experience with normalization. A normalized schema provides a good starting point for further development of a database application...

Q:

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...

Q:

Consider a relation R with six attributes A , B , C , D , E , F . You are given the following dependences: C F , E BC D , AD B , and ED C . Is {( ABCD )} a candidate key of this relation? If not, is...

Q:

Consider a relation R with five attr?butes A, B, C, D, E. You are given the following dependences: 1. BC- D Is{(ABCE)j a candidate key of this relation? If not, is (ABC)j? Justify your answer Answer:...

Q:

Consider a Relation R with five attributes A, B & C. The following dependencies are given: AB -> C, C -> B 1. In BCNF ? Why or why not? 2. In 3NF ? Why or why not?

Q:

If an import quota of 5 million containers is imposed on roses, what happens to the price of roses in North America, the quantity of roses bought, the quantity produced locally, and the quantity...

Q:

Suppose a U.S. company has a subsidiary in Japan that generates revenue in JPY. The company has a forecasted revenue of JPY 100,000,000 in 6 months. The current spot exchange rate is USD/JPY 110.50,...

Q:

8. Describe the output when the following code executes in 64-bit mode: .data dividend_hi QWORD 00000108h dividend_lo QWORD 33300020h divisor QWORD 00000100h .code mov rdx,dividend_hi mov...

Q:

2. DSC results 3807 Peak = 109.70 OC Area = 508 250 ml Delta 9779Wg 30 Hent FlowEndo Up (m) 25 Print Copy Image 1923 157 40 60 80 100 120 140 Temperature (C) Figure 4.3: DSC curve of LDPE sheet with...

Q:

11. last word Studies indicate that married men on average earn more income than unmarried men of the same age and education level. Why must we be cautious in concluding that marriage is the cause...

Q:

7. What are economic resources? What categories do economists use to classify them? Why are resources also called factors of production? Why are they called inputs? LO1.5

Q:

10. Suppose that, on the basis of a nations production possibilities curve, an economy must sacrifice 10,000 pizzas domestically to get the 1 additional industrial robot it desires but that it can...