Question: 6. [7 points] Projection Consider a relation R=(A,B,C,D,E,G,H) and a set S={ABC,ACB,ADE,BD, BCA,EG} of functional dependencies that hold over R. Assume that R was decomposed

6. [7 points] Projection Consider a relation R=(A,B,C,D,E,G,H) and a set S={ABC,ACB,ADE,BD, BCA,EG} of functional dependencies that hold over R. Assume that R was decomposed into a set of relations which includes R1=(A,B,C). Compute the set of functional dependencies in S that hold over relation R1, i.e., compute the projection of S on R1. Show your work

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!

3 . [ 1 2 points ] Consider a relation R = ( A , B , C , D , E , F ) and a set S = { AB C , AC B , AD E , B D , BC A , D E } of functional dependencies that hold over R . Assume that R was decomposed...

Insert anomaly means the inability to create a new record due to the absence of other data (2 points) True False 2 Specialization S: S = {V1, V2, ..., vn) is a set of subclasses with the same...

(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?...

Briefly describe ASCII and Unicode and draw attention to any relationship between them. [3 marks] (b) Briefly explain what a Reader is in the context of reading characters from data. [3 marks] A...

Probability and Statistics - Problem Set c Keith M. Chugg October 2, 2015 1 Preliminaries, Combinatorics, Set Probability 1.1. A number of bats are in a cave. 2 bats can see out of their left eye. 3...

A creative engineer suggests structuring the TLB so that not all the bits of the presented address need match to result in a hit. Suggest how this might be achieved, and what might be the costs and...

Distributed Systems Einstein has established that there is no universal time. For earth-based computer systems discuss how events might be assiganed a time stamp which is reasonably close to...

Induction (#1-3, 24 pts) #1 . Prove by induction that8 + 15 + 22 + 29 + ... +(7 n + 1) = n (7 n + 9)/2for all n N . #2. Prove the summation formula for the following particular finite geometric...

can i get a solution to this question please. Value: Document (include your file name) 15% of final grade How to complete: 1. Read the following Anniversary Party scheduling problem: As the project...

1. (20 points) Shoes are sold in a variety of styles and sizes. A style is identified by a style. Each style has a single description (e.g. men's slippers) and the same description may apply to...

The Cutting Department of Thakur Manufacturing has the following production and cost data for July. Materials are entered at the beginning of the process. Conversion costs are incurred uniformly...

Suppose that Lil John Industries equity is currently selling for $27 per share and that there are 2 million shares outstanding. The firm also has 50 thousand bonds outstanding, which are selling at...

Question 3 Preston Inc. is considering two projects; each project would have a ten - year life and would require a $ 3 0 0 , 0 0 0 investment in equipment. At the end of ten years, the projects would...

Seved Help 14 Wisconsin Snowmobile Corp. is considering a switch to level production Cost efficiencies would occur under level production, and aftertax costs would decline by $31,500, but inventory...

Did the person take the initiative to understand the issue and gather needed information?

Is the person willing to deal with the consequences?

Was there an effort to involve the appropriate people?