Algorithms Flowcharts Pseudocode Hierarchy charts

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
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I uploaded my question and i have the code for it too. I just want you to explain the code using the following:

Use the following programming design tools to show the design of your work. Programming Design Tools

  • Algorithms

  • Flowcharts

  • Pseudocode

  • Hierarchy charts

 

Use the following program planning to show your work. Program Planning:

    1. Analyze: Define the problem.

    2. Design: Plan the solution to the problem.

    3. Code: Translate the algorithm into a programming language.

    4. Test and correct: Locate and remove any errors in the program.

    5. Complete the documentation: Organize all the material that describes the program.

The image contains a Python script focused on validating a 16-digit ID card number. Here’s a detailed transcription and explanation of the code:

### Code Explanation

#### Class and Methods
1. **Class `id`:**
   - Contains methods `validate_id` and `user_input`.

2. **Method `validate_id(self, a, b):**
   - **Parameters:** Accepts two lists `a` and `b`.
   - **Logic:**
     - Calculates `sum_1` by iterating over list `a`, adding digits with conditional logic (`i+i-9` if `i+i > 9`, else `i+i`).
     - Calculates `sum_2` simply by summing list `b`.
     - **Returns:** A tuple of the two summed values, `sum_1` and `sum_2`.

3. **Method `user_input(self):**
   - Asks for user input with `input("Enter your ID card number :")`.
   - Checks if the input is a 16-digit numerical string.
   - Separates the digits into two lists:
     - **`list1` for even-placed digits (0, 2, 4, ...)**
     - **`list2` for odd-placed digits (1, 3, 5, ...)**
   - Calls `validate_id` with these lists to check validity.
   - **Returns:** A message indicating whether the number is valid or not based on divisibility by 10.

#### Main Script
- **Creates an instance (`b`) of the `id` class.**
- **Calls `user_input` method on this instance and stores the result (`out`).**
- **Prints the result (`out`).**

### Key Components
- **`sum_1` and `sum_2`:** Used for digit manipulation and summing.
- **Conditionals:** Validate the input format and final results based on specified logical conditions.
- **Modulus Operation:** Ensures the total sum is evenly divisible by 10 for validity.

#### Usage
This script is structured to validate a specific format of numerical IDs, checking both length and a custom checksum condition. The functionality could be extended for different kinds of numerical validations with similar logic.
Transcribed Image Text:The image contains a Python script focused on validating a 16-digit ID card number. Here’s a detailed transcription and explanation of the code: ### Code Explanation #### Class and Methods 1. **Class `id`:** - Contains methods `validate_id` and `user_input`. 2. **Method `validate_id(self, a, b):** - **Parameters:** Accepts two lists `a` and `b`. - **Logic:** - Calculates `sum_1` by iterating over list `a`, adding digits with conditional logic (`i+i-9` if `i+i > 9`, else `i+i`). - Calculates `sum_2` simply by summing list `b`. - **Returns:** A tuple of the two summed values, `sum_1` and `sum_2`. 3. **Method `user_input(self):** - Asks for user input with `input("Enter your ID card number :")`. - Checks if the input is a 16-digit numerical string. - Separates the digits into two lists: - **`list1` for even-placed digits (0, 2, 4, ...)** - **`list2` for odd-placed digits (1, 3, 5, ...)** - Calls `validate_id` with these lists to check validity. - **Returns:** A message indicating whether the number is valid or not based on divisibility by 10. #### Main Script - **Creates an instance (`b`) of the `id` class.** - **Calls `user_input` method on this instance and stores the result (`out`).** - **Prints the result (`out`).** ### Key Components - **`sum_1` and `sum_2`:** Used for digit manipulation and summing. - **Conditionals:** Validate the input format and final results based on specified logical conditions. - **Modulus Operation:** Ensures the total sum is evenly divisible by 10 for validity. #### Usage This script is structured to validate a specific format of numerical IDs, checking both length and a custom checksum condition. The functionality could be extended for different kinds of numerical validations with similar logic.
# Validating a 16-Digit ID Number

## Introduction
A web application follows a specific set of rules to validate a 16-digit ID number. The validation process includes arithmetic operations and checks to ensure the integrity of the ID.

## Validation Rules

1. **Doubling Every Other Digit:**
   - Start with the leftmost digit, double it, and then double every other digit after it.
   - If the doubled digit is a two-digit number, subtract 9 from it.
   - Sum these resulting digits.

   For example, consider the ID card number `5866793610024475`:
   - The digits considered for doubling are: 5, 6, 7, 3, 1, 0, 4, 7.
   - After doubling and adjusting any two-digit results, the digits become: 1, 3, 6, 2, 0, 8, 7, 5.
   - The sum of these replacements is 30.

   | Original Digit | 5 | 8 | 6 | 6 | 7 | 9 | 3 | 6 | 1 | 0 | 0 | 2 | 4 | 4 | 7 | 5 |
   |----------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
   | Double+Adjust  | 5 | 6 | 6 | 7 | 9 | 3 | 6 | 1 | 0 | 0 | 2 | 4 | 4 | 7 | 5 |
   | Result         | 1 |   | 3 |   | 6 |   | 2 |   | 0 |   | 8 |   | 7 |   | 5 |

2. **Summing Remaining Digits:**
   - Sum the digits in the odd-numbered positions.
   - For the number `5866793610024475`, the resulting sum is 40 (digits 8, 6, 9, 6, 0, 2, 4 plus 7).

3. **Final Validation:**
   - Add the two sums (30 and 40).
   - If the result is a multiple of 10, the ID is considered valid. Otherwise, it
Transcribed Image Text:# Validating a 16-Digit ID Number ## Introduction A web application follows a specific set of rules to validate a 16-digit ID number. The validation process includes arithmetic operations and checks to ensure the integrity of the ID. ## Validation Rules 1. **Doubling Every Other Digit:** - Start with the leftmost digit, double it, and then double every other digit after it. - If the doubled digit is a two-digit number, subtract 9 from it. - Sum these resulting digits. For example, consider the ID card number `5866793610024475`: - The digits considered for doubling are: 5, 6, 7, 3, 1, 0, 4, 7. - After doubling and adjusting any two-digit results, the digits become: 1, 3, 6, 2, 0, 8, 7, 5. - The sum of these replacements is 30. | Original Digit | 5 | 8 | 6 | 6 | 7 | 9 | 3 | 6 | 1 | 0 | 0 | 2 | 4 | 4 | 7 | 5 | |----------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| | Double+Adjust | 5 | 6 | 6 | 7 | 9 | 3 | 6 | 1 | 0 | 0 | 2 | 4 | 4 | 7 | 5 | | Result | 1 | | 3 | | 6 | | 2 | | 0 | | 8 | | 7 | | 5 | 2. **Summing Remaining Digits:** - Sum the digits in the odd-numbered positions. - For the number `5866793610024475`, the resulting sum is 40 (digits 8, 6, 9, 6, 0, 2, 4 plus 7). 3. **Final Validation:** - Add the two sums (30 and 40). - If the result is a multiple of 10, the ID is considered valid. Otherwise, it
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