I need you solve this question (Based on the Un-Normalized database table below, create a data model for a Rental Car
I need you solve this question (Based on the Un-Normalized database table below, create a data model for a Rental Car
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
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I need you solve this question (Based on the Un-Normalized
agency by normalizing them with 2nd and 3rd normal forms.) i need you to complete just like the second image in hand written
![**Title: Normalization in Database Design**
**Description:**
This educational section explains how to normalize an un-normalized database table for a rental car agency, focusing on the second and third normal forms.
**Un-Normalized Database Table:**
| Car ID | Car Type | Base Rent | Cust ID | Name | DOB | Age | Cust Address | Date of Booking | Service Name | Service Charge |
|--------|----------|-----------|---------|-------|-------|-----|---------------|----------------|--------------|----------------|
| 501 | Sedan | $40 | 10001 | John | 1/8/80| 34 | 300 Main St | 4/22/14 | GPS | $15.00 |
| 501 | Sedan | $40 | 10001 | John | 1/8/80| 34 | 300 Main St | 4/22/14 | EzPass | $10.00 |
| 501 | Sedan | $40 | 10001 | John | 1/8/80| 34 | 300 Main St | 4/22/14 | Full tank | $40.00 |
| 502 | SUV | $60 | 10001 | John | 1/8/80| 34 | 300 Main St | 3/15/13 | GPS | $15.00 |
| 502 | SUV | $60 | 10001 | John | 1/8/80| 34 | 300 Main St | 3/15/13 | Bluetooth | $30.00 |
| 501 | Sedan | $40 | 10002 | Jill | 4/15/74| 40 | 123 Wall St | 4/20/14 | Moon Roof | $15.00 |
| 501 | Sedan | $40 | 10002 | Jill | 4/15/74| 40 | 123 Wall St | 4/20/14 | Leather Seats| $20.00 |
**Explanation:**
The table contains columns including Car](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F341515a7-9f2b-49dc-a023-366552e2ebc5%2F87cf4fdd-554b-4de4-9a82-b9c26f415ab1%2Firu0al_processed.png&w=3840&q=75)
Transcribed Image Text:**Title: Normalization in Database Design**
**Description:**
This educational section explains how to normalize an un-normalized database table for a rental car agency, focusing on the second and third normal forms.
**Un-Normalized Database Table:**
| Car ID | Car Type | Base Rent | Cust ID | Name | DOB | Age | Cust Address | Date of Booking | Service Name | Service Charge |
|--------|----------|-----------|---------|-------|-------|-----|---------------|----------------|--------------|----------------|
| 501 | Sedan | $40 | 10001 | John | 1/8/80| 34 | 300 Main St | 4/22/14 | GPS | $15.00 |
| 501 | Sedan | $40 | 10001 | John | 1/8/80| 34 | 300 Main St | 4/22/14 | EzPass | $10.00 |
| 501 | Sedan | $40 | 10001 | John | 1/8/80| 34 | 300 Main St | 4/22/14 | Full tank | $40.00 |
| 502 | SUV | $60 | 10001 | John | 1/8/80| 34 | 300 Main St | 3/15/13 | GPS | $15.00 |
| 502 | SUV | $60 | 10001 | John | 1/8/80| 34 | 300 Main St | 3/15/13 | Bluetooth | $30.00 |
| 501 | Sedan | $40 | 10002 | Jill | 4/15/74| 40 | 123 Wall St | 4/20/14 | Moon Roof | $15.00 |
| 501 | Sedan | $40 | 10002 | Jill | 4/15/74| 40 | 123 Wall St | 4/20/14 | Leather Seats| $20.00 |
**Explanation:**
The table contains columns including Car
![The handwritten note appears to outline a database schema with primary and foreign keys to reference various entities related to a project management system. Below is the transcription of the text:
1. **PK: Projcode + EmpNo**
2. **Project (Projcode (PK), ProjectName, ProjectMgr, ProjectBudget)**
- **Employee (EmpNo (PK), EmployeeName, DeptNo, DeptName, HourlyRate)**
- **EmpProject (Projcode (FK), EmpNo (FK))**
3. **Dept (DeptNo (PK), DeptName)**
- **Employee (EmpNo (PK), EmployeeName, DeptNo, HourlyRate)**
- **PM (PMID (PK), PMName)**
- **Project (Projcode (PK), ProjName, PMID, ProjectBudget)**
- **EmpProject (Projcode (FK), EmpNo (FK))**
### Explanation:
1. **Primary Key (PK):**
- The primary key is a unique identifier for records in a database. In this context, it is a combination of `Projcode` and `EmpNo`.
2. **Project Entity:**
- Holds information about various projects with attributes like `Projcode` for project code, `ProjectName` for the name of the project, `ProjectMgr` for the manager, and `ProjectBudget` for the budget.
3. **Employee Entity:**
- Contains details about employees such as `EmpNo` for employee number, `EmployeeName`, `DeptNo` and `DeptName` for department details, and `HourlyRate`.
4. **EmpProject Entity:**
- A junction table that relates employees to projects using foreign keys: `Projcode (FK)` and `EmpNo (FK)`.
5. **Department (Dept) Entity:**
- Describes departments with `DeptNo` and `DeptName`.
6. **PM (Project Manager) Entity:**
- Represents project managers with `PMID` for ID and `PMName` for name.
7. **Additional Notes:**
- Some entities are repeated within different contexts to illustrate multiple relationships, like `Project` and `Employee`.
The handwritten structure outlines relationships between projects, employees, departments, and project managers, exemplifying a typical relational database design approach.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F341515a7-9f2b-49dc-a023-366552e2ebc5%2F87cf4fdd-554b-4de4-9a82-b9c26f415ab1%2Ffyqzklf_processed.png&w=3840&q=75)
Transcribed Image Text:The handwritten note appears to outline a database schema with primary and foreign keys to reference various entities related to a project management system. Below is the transcription of the text:
1. **PK: Projcode + EmpNo**
2. **Project (Projcode (PK), ProjectName, ProjectMgr, ProjectBudget)**
- **Employee (EmpNo (PK), EmployeeName, DeptNo, DeptName, HourlyRate)**
- **EmpProject (Projcode (FK), EmpNo (FK))**
3. **Dept (DeptNo (PK), DeptName)**
- **Employee (EmpNo (PK), EmployeeName, DeptNo, HourlyRate)**
- **PM (PMID (PK), PMName)**
- **Project (Projcode (PK), ProjName, PMID, ProjectBudget)**
- **EmpProject (Projcode (FK), EmpNo (FK))**
### Explanation:
1. **Primary Key (PK):**
- The primary key is a unique identifier for records in a database. In this context, it is a combination of `Projcode` and `EmpNo`.
2. **Project Entity:**
- Holds information about various projects with attributes like `Projcode` for project code, `ProjectName` for the name of the project, `ProjectMgr` for the manager, and `ProjectBudget` for the budget.
3. **Employee Entity:**
- Contains details about employees such as `EmpNo` for employee number, `EmployeeName`, `DeptNo` and `DeptName` for department details, and `HourlyRate`.
4. **EmpProject Entity:**
- A junction table that relates employees to projects using foreign keys: `Projcode (FK)` and `EmpNo (FK)`.
5. **Department (Dept) Entity:**
- Describes departments with `DeptNo` and `DeptName`.
6. **PM (Project Manager) Entity:**
- Represents project managers with `PMID` for ID and `PMName` for name.
7. **Additional Notes:**
- Some entities are repeated within different contexts to illustrate multiple relationships, like `Project` and `Employee`.
The handwritten structure outlines relationships between projects, employees, departments, and project managers, exemplifying a typical relational database design approach.
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