Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Chapter 1, Problem 1.33E
Explanation of Solution
Name of spreadsheet: COMPANY
Column names:
| Name | IndustryCode | Gross Sales | OfficerName | OfficerTitle |
The above spreadsheet contains Name, IndustryCode, Gross Sales, OfficerName, and OfficerTitle.
Divide the columns into tables with single theme:
Industry details:
| Industry_id | Name | IndustryCode |
| 1 | SUN | 352-765 |
| 2 | Anime | 654-123 |
Officer details:
| Officer_id | OfficerName | OfficerTitle |
| 1 | Ram Kumar | ceo |
| 2 | Rajesh | Project Head |
Sales details:
| Industry_id | Officer_id | Gross Sales |
| 1 | 1 | 23000000 |
| 2 | 2 | 45000000 |
| 1 | 2 | 50000000 |
- Number of themes: Three
- Name of the theme: Industry details, officer details, and Sales
Assumptions:
In the above spreadsheet, there are three themes. One of the themes is about industry which is specified through the heading of Name and IndustryCode. The other theme is about officer who is specified through the heading of OfficerName and OfficerTitle. The final theme is about sales which are specified through the heading of Gross Sales.
- Industry – It contains Industry_id, Name and IndustryCode attributes. The Industry_id is the primary key of the Industry table.
- Officer – It contains Officer_id, OfficerName, and OfficerTitle attributes. The Officer_id is the primary key of the Officer table.
- Sales – It contains Industry_id, Officer_id, and Gross Sales attributes.
Name of spreadsheet: COMPANY
Column names:
| Name | IndustryCode | Gross Sales | NameOfOwner |
The above spreadsheet contains Name, IndustryCode, Gross Sales and NameOfOwner.
Divide the columns into tables with single theme:
Industry details:
| Industry_id | Name | IndustryCode | NameOfOwner |
| 1 | SUN | 352-765 | XXX |
| 2 | Anime | 654-123 | YYY |
Sales:
| Industry_id | Gross Sales |
| 1 | 23000000 |
| 2 | 45000000 |
| 1 | 50000000 |
- Number of themes: Three
- Name of the theme: Industry details and Sales
Assumptions:
In the above spreadsheet, there are three themes. One theme is about industry which is specified through the heading of Name and IndustryCode. The other theme is about president which is specified through the heading of NameOfPresident. The final theme is about a sale which is specified with the heading of Gross Sales.
- Industry – It contains Industry_id, Name, IndustryCode, and NameOfOwner attributes. The Industry_id is the primary key of the Industry table.
- Sales – It contains Industry_id, and Gross Sales attributes.
Name of spreadsheet: COMPUTER
Column names:
| SerialNumber | Make | Model | DiskType | DiskCapacity |
The above spreadsheet contains SerialNumber, Make, Model, DiskType and DiskCapacity...
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I need help fixing the minor issue where the text isn't in the proper place, and to ensure that the frequency cutoff is at the right place.
My code:
% Define frequency range for the plot
f = logspace(1, 5, 500); % Frequency range from 10 Hz to 100 kHz
w = 2 * pi * f; % Angular frequency
% Parameters for the filters - let's adjust these to get more reasonable cutoffs
R = 1e3; % Resistance in ohms (1 kΩ)
C = 1e-6; % Capacitance in farads (1 μF)
% For bandpass, we need appropriate L value for desired cutoffs
L = 0.1; % Inductance in henries - adjusted for better bandpass response
% Calculate cutoff frequencies first to verify they're in desired range
f_cutoff_RC = 1 / (2 * pi * R * C);
f_resonance = 1 / (2 * pi * sqrt(L * C));
Q_factor = (1/R) * sqrt(L/C);
f_lower_cutoff = f_resonance / (sqrt(1 + 1/(4*Q_factor^2)) + 1/(2*Q_factor));
f_upper_cutoff = f_resonance / (sqrt(1 + 1/(4*Q_factor^2)) - 1/(2*Q_factor));
% Transfer functions
% Low-pass filter (RC)
H_low = 1 ./ (1 + 1i * w *…
Chapter 1 Solutions
Database Concepts (7th Edition)
Ch. 1 - Why is the study of database technology important?Ch. 1 - Prob. 1.2RQCh. 1 - Describe the purpose of a database.Ch. 1 - Prob. 1.4RQCh. 1 - Prob. 1.5RQCh. 1 - Prob. 1.6RQCh. 1 - Prob. 1.7RQCh. 1 - Break the list in Figure 1-34 into two tables,...Ch. 1 - Show how the tables you created for question 1.11...Ch. 1 - Prob. 1.10RQ
Ch. 1 - Prob. 1.11RQCh. 1 - Break the list in Figure 1-35 into tables, each...Ch. 1 - Describe in your own words and illustrate with...Ch. 1 - Prob. 1.14RQCh. 1 - Define the term database.Ch. 1 - Prob. 1.17RQCh. 1 - List the components of a database.Ch. 1 - Prob. 1.19RQCh. 1 - Prob. 1.20RQCh. 1 - Prob. 1.21RQCh. 1 - What is the purpose of a DBMS?Ch. 1 - List the specific functions of a DBMS.Ch. 1 - Define the term referential integrity constraint....Ch. 1 - Prob. 1.25RQCh. 1 - List the functions of a database application.Ch. 1 - Prob. 1.27RQCh. 1 - Prob. 1.28RQCh. 1 - Prob. 1.29RQCh. 1 - Prob. 1.30RQCh. 1 - Prob. 1.31ECh. 1 - Prob. 1.32ECh. 1 - Prob. 1.33E
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