Question: Given relation R(A,B,C,D,E) with functional dependencies {ABC, CD, DE}. Show how to determine the candidate key What is the reason that R is not BCNF?

Given relation R(A,B,C,D,E) with functional dependencies {ABC, CD, DE}.

Show how to determine the candidate key

What is the reason that R is not BCNF?

Show ALL steps needed to decompose R into BCNF relations, if possible.

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:

Given R = ( A , B , C , D , E ) and functional dependencies AB - > C , E - > A , C - > DEB, give candidate key ( s ) for R . Show how you reached closure on each candidate key. Find all 3 candidate...

Q:

CSE 4 5 0 3 / 6 5 0 3 Total 5 2 points 1 . Write the definitions of 1 NF , 2 NF , 3 NF and BCNF . ( 4 * 2 . 5 = 1 0 points ) 2 . Consider the universal relation R = { A , B , C , D , E , F , G , H ,...

Q:

(5 pts) Consider the universal relation R = {A, B, C, D, E, F, G, H, I, J} and the set of functional dependencies F = {{A,B}{C}, {A}{D,E}, {B}{F}, {F}{G,H}, {D}{I,J}}. What is the key for R?...

Q:

Using the DBD system, verify your answers to the following exercises: a. 14.24 (3NF only) b. 14.25 c. 14.27 d. 14.28 Exercise 14.24 Consider the universal relation R = {A, B, C, D, E, F, G, H, I, J}...

Q:

This is how we have to do it!: Question 2 Given is the relational schema R= (A, B, C, D, E) and the set of functional dependencies F = {AB BC,C A, ABC D}. Is R in 3NF? If not, give a lossless and...

Q:

This is how we have to do it!: Question 3 Given is the relational schema R= (A, B, C, D, E) and the set of functional dependencies F = {AB BC, C + A,BC D}. Is R in 3NF? If not, give a lossless and...

Q:

Problem 6 Consider the schema R- (A, B, C, D, E) together with the functional dependencies: AB C CD A CE What are the key(s) of R? Show your work to prove why each candidate key is a key. a) b) Is R...

Q:

This Question aims to analyze schemas to determine dependencies and convert them to BCNF. Remember to state any assmptions you make. 1. Suppose we have the Schema R(A, B, C, D, E) and the...

Q:

This homework aims to analyze schemas to determine dependencies and convert them to BCNF. Remember to state any assmptions you make. 1. Suppose we have the Schema R(A, B, C, D, E) and the...

Q:

Database Management Given R (A, B, C, D, E, F, G, H} with functional dependencies: {A rightarrow E, E rightarrow B, BG rightarrow F, E rightarrow D, BD rightarrow E, F rightarrow A, D rightarrow H,...

Q:

A spaceship ferrying workers to Moon Base I takes a straight-line path from the earth to the moon, a distance of 384,000 km. Suppose the spaceship starts from rest and accelerates at 20.0 m/s2 for...

Q:

Find equivalent annual rate offend for purchase discounts. The terms of sale 2/10, net/30 mean that the buyer can take a discount of 2% from gross invoice price by paying the invoice within 10 days:...

Q:

7 (a) Why must every company have a registered office? What information about the registered office must be published? To what extent can the registered office of the company be changed and what...

Q:

Write a C program that assigns random integers to a 55 array and checks if the sum of the elements in the main diagonal is equal to that of its secondary diagonal. Use pointer arithmetic to process...

Q:

This new, transportation paradigm may have a global affect and the barriers to entry will be extremely costly too overcome.

Q:

The American Dream of innovation, persistence, and a refusal to except the status quo has just created, in our opinion, Americas newest and most exciting company to watch, said James Gaspard...

Q:

Commerce One helps its customers to more efficiently lower administrative costs, improve order times, and to manage contract negotiations.