Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Expert Solution & Answer
Chapter 7, Problem 36E
Explanation of Solution
BCNF (Boyce Codd Normal Form):
A relation is said to be in BCNF if it holds the following 2 conditions:
- The relation is in Third Normal Form
- For every dependency X→a, X is superkey.
Every binary relation which means every schema consisting of exactly 2 attributes is said to be in BCNF.
In order to prove that, consider all possible combinations of functional dependencies on a relation R with 2 attributes A1 and A2.
Case1: A1→A2
In this case, A1 is the candidate key and hence also a superkey as candidate keys is minimal superkeys.
So, the BCNF condition satisfies in this case...
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You are tasked with developing a program to use city data from an online database and generate a
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3) The logic for the method "getCityCategory" of City Class is below:
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CPS 2231 - Computer Programming – Spring 2025
City Report Application
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Due Date:
Concepts: Classes and Objects, Reading from a file and generating report
Point value: 40 points.
The purpose of this project is to give students exposure to object-oriented design and programming
using classes in a realistic application that involves arrays of objects and generating reports.
Assignment Instructions:
You are tasked with developing a program to use city data from an online database and generate a
city details report.
1) Create a new Project in Eclipse called "HW7”.
2) Create a class "City.java" in the project and implement the UML diagram shown below and add
comments to your program.
3) The logic for the method "getCityCategory" of City Class is below:
a. If the population of a city is greater than 10000000, then the method returns "MEGA"
b. If the population of a city is greater than 1000000 and less than 10000000, then the
method returns "LARGE"
c. If the population of a city is greater…
Please calculate the average best-case IPC attainable on this code with a 2-wide, in-order, superscalar machine:
ADD X1, X2, X3
SUB X3, X1, 0x100
ORR X9, X10, X11
ADD X11, X3, X2
SUB X9, X1, X3
ADD X1, X2, X3
AND X3, X1, X9
ORR X1, X11, X9
SUB X13, X14, X15
ADD X16, X13, X14
Chapter 7 Solutions
Database System Concepts
Ch. 7 - Prob. 1PECh. 7 - Prob. 2PECh. 7 - Explain how functional dependencies can be used to...Ch. 7 - Prob. 4PECh. 7 - Prob. 5PECh. 7 - Prob. 6PECh. 7 - Prob. 7PECh. 7 - Prob. 8PECh. 7 - Prob. 9PECh. 7 - Prob. 10PE
Ch. 7 - Prob. 11PECh. 7 - Prob. 12PECh. 7 - Prob. 13PECh. 7 - Prob. 14PECh. 7 - Prob. 15PECh. 7 - Prob. 16PECh. 7 - Prob. 17PECh. 7 - Prob. 18PECh. 7 - Prob. 19PECh. 7 - Prob. 20PECh. 7 - Prob. 21ECh. 7 - Prob. 22ECh. 7 -
Explain what is meant by repetition of...Ch. 7 -
Why are certain functional dependencies called...Ch. 7 - Prob. 25ECh. 7 - Prob. 26ECh. 7 - Prob. 27ECh. 7 - Prob. 28ECh. 7 - Prob. 29ECh. 7 - Prob. 30ECh. 7 - Prob. 32ECh. 7 - Prob. 33ECh. 7 - Prob. 35ECh. 7 - Prob. 36ECh. 7 - Prob. 37ECh. 7 - Prob. 38ECh. 7 - Prob. 39ECh. 7 - Prob. 40ECh. 7 - Prob. 41ECh. 7 - Prob. 42ECh. 7 - Prob. 43E
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