
Concept explainers
a)
Creation of an
- To create an information system an initial study and following phases are need to be made by the designer because they will create an impact to the design of the
database . - The information is collected in order to establish details about the entities, relationships among the entities generated.
- Business rules that are shaped up through relationships, connectivity and cardinalities are being obtained and collected through designer.
Question that can be asked in order to create an information system:
The below are some of the sample questions that can impact the design of the database:
- Is it required to develop the database for all departments at once or whether it is required to design and implement the database for one particular department?
- What will the design approach required that could affect the process of designing?
- What type of development is required, one module at a time or integrated system approaches (Example: Billing, production, shipping and inventory)?
- What type of tracking system is required that is in terms of tracking the nuts and bolts through lot number, by shift, by production, by type or by department?
- What type of tracking system is required for the suppliers of each batch that is in terms raw materials used in the production of the nuts and bolts?
- Is it required to track the customer information regarding the receive summary of nuts and bolts based on batches?
- What type of reporting system is required that is what type of reporting requirements are required and who requires the distribution report details needs to be specified?
Effect of the questions that are asked:
The answers to the above question affect the database design in conceptual and in logical way along with the implementation, testing made with the subsequent operations.
b)
Creation of an information system:
- To create an information system an initial study and following phases are need to be made by the designer because they will create an impact to the design of the database.
- The information is collected in order to establish details about the entities, relationships among the entities generated.
- Business rules that are shaped up through relationships, connectivity and cardinalities are being obtained and collected through designer.
Question that can be asked in order to create an information system:
The below are some of the sample questions that can impact the design of the database:
- Is it required to develop the database for all departments at once or whether it is required to design and implement the database for one particular department?
- What will the design approach required that could affect the process of designing?
- What type of development is required, one module at a time or integrated system approaches (Example: Billing, production, shipping and inventory)?
- What type of tracking system is required that is in terms of tracking the nuts and bolts through lot number, by shift, by production, by type or by department?
- What type of tracking system is required for the suppliers of each batch that is in terms raw materials used in the production of the nuts and bolts?
- Is it required to track the customer information regarding the receive summary of nuts and bolts based on batches?
- What type of reporting system is required that is what type of reporting requirements are required and who requires the distribution report details needs to be specified?
Effect of the questions that are asked:
The answers to the above question affect the database design in conceptual and in logical way along with the implementation, testing made with the subsequent operations.

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Chapter 9 Solutions
Database Systems: Design, Implementation, & Management
- 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 *…arrow_forwardMy code is experincing 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 *…arrow_forwardI would like to know the main features about the following three concepts: 1. Default forwarded 2. WINS Server 3. IP Security (IPSec).arrow_forward
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