Consider the following instance of a relation R(A, B, C, D): A B C D a1 b1

Fantastic news! We've Found the answer you've been seeking!

Question:

Consider the following instance of a relation R(A, B, C, D):

A B C D

a1 b1 c1 d1

a1 b2 c1 d2

a2 b1 c1 d1

Explain

A. Does this instance satisfy B → D?

B. Does this instance satisfy BC → D?

C. Does this instance satisfy C → D?

D. Can the following be proven using Armstrong's Axioms? Explain your answer. If BC → D and B → D, then C → D

Related Book For answer-question

Operations and Supply Chain Management

ISBN: 978-1119444404

9th edition

Authors: Roberta S. Russell, Bernard W. Taylor

See More Books

Posted Date: Sep 05, 2023 08:57 AM

See More Questions

Austin Enterprises makes and sells three types of dress shirts. Management is trying to determine the most profitable mix. Sales prices, demand, and use of manufacturing inputs follow. Basic Classic...
And do you have the answer to Problem 6, Pete? asked Professor Grasso. Yes sir, I have the answer according to the textbook, but Im not sure I get it, replied Pete. You dont understand how to get the...
A relation R on a set A is called irreflexive if for all a A, (a, a) R. (a) Give an example of a relation R on Z where R is irreflexive and transitive but not symmetric. (b) Let R be a nonempty...
What is the expected spot rate at the end of the year assuming PPP? initial spot rate 87.60 Expected US inflation 2.20% Expected Japanese yen inflation 0.00%
The 30-kg turbine disk has a centroidal radius of gyration of 175 mm and is rotating clockwise at a constant rate of 60 rpm when a small blade of mass 51 grams at point A becomes loose and is thrown...
An alcohol will not react with aziridine unless the reaction is catalyzed by an acid. Why is a catalyst necessary? H HCl H;NCH,CH,OCH; CI CH;OH aziridine
Explain how consent differs among competent patients, minors, guardians, and incompetent patients.
Standing sound waves are produced in a pipe that is 1.20 m long. For the fundamental and first two overtones, determine the locations along the pipe (measured from the left end) of the displace...
Lev and Gu are surprised that the structure and content of corporate annual reports have not changed between 1 9 0 2 and 2 0 1 2 . Why would one expect the accounting system to change over time? 2 -...
Mrs. Yacumflastor, who is 68 years old, has correctly computed the following separate amounts in respect of income for tax purposes in 2023 for both her and her husband, who is 66 years old. (Amounts...
what opportunities can digitalization open up in terms of sponsorship for sailing ?
How do social network analysis techniques elucidate the patterns of communication, influence, and collaboration within teams, and how can this knowledge be leveraged to enhance information flow,...
How can you Improve the tone and clarity of a message by using positive and courteous expressions, bias-free language, plain words, and precise terms.?
(b) Convert the following C++ code from if-Statement to switch-statement, such that it gives the same output. [6 Marks] int x; cin >> x; if (x == 1) cout < < "EXCELLENT"; else if ((x ==2) || (x == 3)...
(c) Convert the following C++ code using while-loop instead of for-loop and using switch-statement instead of if-statement, such that it gives the same output. [8 Marks] int A[3][3] =...
Video link: https://youtu.be/gwpe0NM2FZk Please respond to the following reflection questions. Your total reflection should be at least one page in length. 1. Which 3 big ideas stood out the most to...
At the instant theta=60, the boy's center of mass G is momentarily at rest. Determine his speed and the tension in each of the two supporting cords of the swing when theta= 90. The boy has a weight...
Do animals have rights? If so, what are they? What duties do human beings have toward animals? Does KFC protect animal welfare at an acceptable level?
What is a poka-yoke? Give an example.
Tigongzhe Company is a Chinese supplier of smartphone camera parts to manufacturing companies in China that assemble smartphones. Last year it had cost of goods sold of $63.7 million and the...
Why is the traditional view of quality control reflected in the use of acceptance sampling unacceptable to adherents of quality management and continuous improvement?
Which of the following approaches is used to study management? Art Process Science Profession
Management is Ongoing process Social process Integrated process All the above
Which is the correct order for the process of management? Planning, organizing, staffing, directing, and controlling Planning, organizing, directing, staffing, and controlling Planning,...

Consider the following instance of a relation R(A, B, C, D): A B C D a1 b1

Question:

Expert Answer:

Solution A No this instance does not satisfy B D This is because there are two tuples with the same ... View the full answer

Operations and Supply Chain Management

Students also viewed these databases questions