Homework Help is Here – Start Your Trial Now!
Engineering
Computer Science
1. There exists a relation S(A, B, C, D, E, F) with the below functional dependencies. {A}→{D} {A}→{E} {D} {C} {D}→{F} Please answer true or false to the following statements with a short explanation as to why. a. Is A,B a superkey? b. Is the decomposition ABC, CDE, EFA a lossless join? c. Is the decomposition ABC, CDE, EFA a dependency preserving? d. Is {A} {E,F} logically implied by FDs present in the relation? e. Is relation S in BCNF?

1. There exists a relation S(A, B, C, D, E, F) with the below functional dependencies. {A}→{D} {A}→{E} {D} {C} {D}→{F} Please answer true or false to the following statements with a short explanation as to why. a. Is A,B a superkey? b. Is the decomposition ABC, CDE, EFA a lossless join? c. Is the decomposition ABC, CDE, EFA a dependency preserving? d. Is {A} {E,F} logically implied by FDs present in the relation? e. Is relation S in BCNF?

Database System Concepts
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
icon
Related questions
Question
NO PAPER WORK ONLY TYPED ANSWERS
1. There exists a relation S(A, B, C, D, E, F) with the below functional dependencies. {A}→{D} {A}→{E} {D} {C} {D}→{F} Please answer true or false to the following statements with a short explanation as to why. a. Is A,B a superkey? b. Is the decomposition ABC, CDE, EFA a lossless join? c. Is the decomposition ABC, CDE, EFA a dependency preserving? d. Is {A}→{E,F} logically implied by FDs present in the relation? e. Is relation S in BCNF?
Transcribed Image Text:1. There exists a relation S(A, B, C, D, E, F) with the below functional dependencies. {A}→{D} {A}→{E} {D} {C} {D}→{F} Please answer true or false to the following statements with a short explanation as to why. a. Is A,B a superkey? b. Is the decomposition ABC, CDE, EFA a lossless join? c. Is the decomposition ABC, CDE, EFA a dependency preserving? d. Is {A}→{E,F} logically implied by FDs present in the relation? e. Is relation S in BCNF?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Data Recovery Approaches
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Database System Concepts
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)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
SEE MORE TEXTBOOKS