Question: Consider the relation R = {A, B, C, D, E, F, G, H, I,J} and the set of functional dependencies F = {{A, B}{C},

Consider the 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} }. (a) Prove {A}{E, I} holds by using inference rules. (10 marks) (b) Whether {A, B, F} is a super key? Whether (A,B,F} is a candidate key? Why? (10 marks) (c) Whether {A, D} is a super key? Whether {A, D} is a candidate key? Why? (10 marks) (d) Decompose R into 2NF. (10 marks)

Step by Step Solution

★★★★★

3.52 Rating (159 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a To prove A E I using inference rules we can use the following steps 1 Given A D E and D I we can i... View full answer

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 Programming Questions!

Portray in words what transforms you would have to make to your execution to some degree (a) to accomplish this and remark on the benefits and detriments of this thought.You are approached to compose...

In this question assume that p and q are atomic formulae. (a) Compare and contrast path formulae and state formulae in temporal logic. [4 marks] (b) Describe and contrast the meanings of F(G p) and...

In schema normalisation, is Boyce-Codd Normal Form (BCNF) always to be preferred over 3rd Normal Form (4NF)? Explain your answer. [5 marks] 8 (TURN OVER) CST.2004.7.4 8 Economics, Law and Ethics (a)...

Use the following data to calculate cost of merchandise sold under the FIFO method. September 1 Beginning Inventory 15 units at $20 each September 10 Purchase 20 units at $25 each September 20...

Air enters an insulated compressor at ambient conditions, 100 kPa, 20C, at the rate of 0.1 kg/s and exits at 200C. The isentropic efficiency of the compressor is 70%. What is the exit pressure? How...

6. Interviewing Job Prospects A large corporation selects college graduates for employment using both interviews and a written test. Interviews conducted at the company site are far more expensive...

develop an understanding of basic intervention concepts and approaches;

The Questron Company manufactures telecommunications equipment at its plant in Scranton, Pennsylvania. The company has marketing divisions throughout the world. A Questron marketing division in...

Question no2 Case study (7.5 marks) You have just been appointed to be a U.S. Foreign Service Officer (FSO), employed by the United States Agency for International Development (USAID). Your first...

Consider the wave behavior of light. Light waves with longer wavelengths have ____ frequencies

11. Given the following Venn diagram, the number shown represent the number of items in each section. For example, there are 18 items in A only. Find n(S) a. b. Find P(C) C. Find n(AB)' 8 d. B Find...

For Exercises 19-26, refer to the functions r, p, and q. Find the indicated function and write the domain in interval notation. (See Example 3) r(x) = -3x 19. (r - p)(x) p(x) = x + 3x q(x) = 1-x 20....

We tend to think of work center scheduling and the Theory of Constraints in a manufacturing environment. Bottlenecks exist in every process. Think about the checkout line at Walmart, getting served...

A steel tank is to be positioned in an excavation, where a = 20 and P = 445 lb as shown in the figure. P1 30 Using trigonometry, determine the magnitude of the force P such that the resultant R of...

Describe one e-commerce business in the retail or services industry that is considered an industry leader. Develop a detailed list of the organization's offerings and how these offerings compare to...

Grouper Athletic Wear Inc's adjusted trial balance amounts (with the exclusion of the adjusting entry to update Inventory and Cost of Goods Sold accounts) appear in alphabetical order as follows on...

In Exercises 1-2, rewrite each verbal statement as an equation. Then decide whether the statement is true or false. Justify your answer. 1. The logarithm of the difference of two numbers is equal to...

What is meant by veracity of data?

How can privacy of data be preserved in a database?

What are the main characteristics of NOSQL systems in the areas related to data models and query languages?

Solve the following quadratic equations using the quadratic formula: To see how the same solutions for (a) through (d) can also be obtained by factoring, see Problem 1.11 (c) to (f). For practice...

Use the three steps outlined in Section 3.6 for graphing y = ax2 + bx + c, to sketch the following quadratic functions: (a) y = x2 + 10x 16 (b) y = x2 8x + 18 (1) With a = 1 > 0, the parabola opens...

Solve the following quadratic equations by factoring. (a) x+10x +21=0 From Problem 1.6 (a), x+10x+21= (x+3)(x+7)=0