Question: Consider a relation with schema T(A, B, C, D) and with FD's AB -> C, BC -> D, CD -> A, and AD -> B.

Consider a relation with schema T(A, B, C, D) and with FD's AB -> C, BC -> D, CD -> A, and AD -> B.

a) What are all the nontrivial FD's that follow from the given FD's? You should restrict yourself to FD's with single attributes on the right side. b) What are all the keys of T? c) What are all the superkeys for T that are not keys?

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!

Consider the relation R defined on { a, b, c, d, e} such that R= {( a,b), (b,b), (b,c), (C,C), (c,d), (d,C), ( d,e), ( e,a)}. Which of the following is false? (a,e) e R4 None (d,a) e R2 (b,b) E R...

Consider the relation R defined on { a , b , c , d , e } such that R = { ( a , b ) , ( b , b ) , ( b , c ) , ( c , c ) , ( c , d ) , ( d , c ) , ( d , e ) , ( e , a ) } . Which of the following is...

Consider a relation with schema R (A, B, C, D) and FDs the set F: F={ } AB A C C D a. (5%) Determine the set of all candidate keys for the relation schema. b. (5%) Determine the highest normal form...

Math 1 - 07 (1) Jadia Devoe-Harris & Test: Exam 2 Time Remaining: 00:48:37 Submit Test This Question: 3 pts 8 of 19 (6 complete) This Test: 49 pts possib List all the bridges in each of the following...

Consider a relation with schema R (A, B, C, D) and FDs the set F: F= { a. b. C. d. } AB-C C-D DA Find all the candidate keys of R. Indicate all BCNF violations for R. Decompose the relations into...

Please help me with these problems: 1. In how many distinct ways can the letters of the word ENDLESSNESS be arranged? 2. A jar contains 5 yellow and 3 green jelly beans. How many ways can 4 jelly...

QUESTION 1 Draw the graph G(V, E) where V = {a, b, c, d, e, f} and E = {ab, ad, bc, cd, cf, de, df}. Attach File Browse Local Files Browse Content Collection

2. (10%) Consider the ER diagram below for modeling an online bookstore. a. (6%) Translate the ER diagram into a relational model. b. (2%) Provide the Tuple Relational Calculus expression for the...

4. The "house graph is an undirected graph with five vertices a, b, c, d, and e, and six edges a-b, b-c, c-d, a-d, a-e, and d-e. It is called that because it can be drawn with abcd as a square and...

I have added the image of the questions below. This should be clear enough to complete. (1 point) Consider the graph with vertex set A, B, C, D and edge set AB, AC, AD, BC, BD, CD Find a spanning...

In the Dominican Republic, factory-bottled water is the primary source of drinking water for 67% of the urban population. In 2009, the population of the Dominican Republic was 9,650,054, of which...

Repeat the previous problem calculating prices for American options instead of European. What happens? In previous problem a. What is the price of a European call option with a strike of $95? b. What...

A portfolio containing a mix of stocks, bonds, and real estate is likely to be more diversified than a portfolio made up of only one asset class.

Which of the following are problems with identifying users of ABC? Multiple select question. ABC means different things to different organizations. Organizations will announce the discontinuance of...

b. What groups were most represented? Why do you think this is so?

3. Describe phases of minority identity development.

5. Identify and describe nine social and cultural identities.