Consider a schema R, a set F of functional dependencies on R, and two candidate keys (k1, k2) as followsR= (A,B,C).F = {B →C,AC –→ B}.ki = AC.k2 =AB.(a) Is R in BCNF?

Given information: - A schema R, a set of functional dependencies F and two candidate keys (k1, k2)…

Answered: Consider a schema R, a set F of…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Create an order for the generic definitions by making use of the main key definitions from the 2NF and 3NF. Provide a comprehensive example to prove your assertion.
Suppose that relations R and S have n tuples and m tuples respectively. What is the minimum number of tuples that the results of the following expression can have? TL(R) – S, for some list of attributes L A. n B. n-m C. max{n,m} D. n*m E. min{n,m} F. m G. n+m H. 0
Consider the following BNF:< parm-list > < parm-list > , < parm-list >| ID| NUMa. Show that this BNF is ambiguous using the sentence: ID, NUM, ID
Given the CFG below: E → E + T | T T → T x F | F F → ( E ) | a Give parse tree and derivations for each strings.A. a + a B. a + a x a C. ( ( a ) ) D. a x (a + a)
When it comes to Map ADT, what are the primary distinctions between a solution that is based on a tree and an approach that is based on a hash? What are the positives and negatives associated with each option?
Consider this UML diagram and select all correct answers: A * B 1,3,5 с id D If A is deleted, corresponding B objects are also deleted via existence dependency. If B is deleted, corresponding C objects are also deleted via existence dependency. A aggregates 1 or more B, B composes 1, 3, or 5 C objects. C is related to D via a qualification, where the key "id" is used to find a D instance.
For problem sets that are given over purely nominal feature sets, classification methods based on vector spaces are not always the best solution. I'm curious as to how strongly you agree or disagree with this statement. If you were doing ML classification on nominal data, which approach would you use? Provide detailed explanations for your answers to the two questions posed.
What are the key differences between a tree-based solution and a hash-based approach when it comes to Map ADT? What are the advantages and disadvantages of both?
Q1Greetings, thatnk you in advance for your response. - Give a decomposition into 3NF of the following schema; - Prove that your 3NF normalization incurs no loss of functional dependencies r(A,B,C,D,E)F={ABàCDE, ACàD, BDàE} Thanks again.

Recommended textbooks for you

Database System Concepts

Computer Science

ISBN:

9780078022159

Author:

Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:

McGraw-Hill Education

Starting Out with Python (4th Edition)

Computer Science

ISBN:

9780134444321

Author:

Tony Gaddis

Publisher:

PEARSON

Digital Fundamentals (11th Edition)

Computer Science

ISBN:

9780132737968

Author:

Thomas L. Floyd

Publisher:

PEARSON

Database System Concepts

Computer Science

ISBN:

9780078022159

Author:

Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:

McGraw-Hill Education

Starting Out with Python (4th Edition)

Computer Science

ISBN:

9780134444321

Author:

Tony Gaddis

Publisher:

PEARSON

Digital Fundamentals (11th Edition)

Computer Science

ISBN:

9780132737968

Author:

Thomas L. Floyd

Publisher:

PEARSON

C How to Program (8th Edition)

Computer Science

ISBN:

9780133976892

Author:

Paul J. Deitel, Harvey Deitel

Publisher:

PEARSON

Database Systems: Design, Implementation, & Manag…

Computer Science

ISBN:

9781337627900

Author:

Carlos Coronel, Steven Morris

Publisher:

Cengage Learning

Programmable Logic Controllers

Computer Science

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

SEE MORE TEXTBOOKS

Consider a schema R, a set F of functional dependencies on R, and two candidate keys (k1, k2) as follows R= (A,B,C). F = {B →C,AC –→ B}. ki = AC. k2 =AB. (a) Is R in BCNF?