Final Answer:
The Online Car Rental System comprises four key components: User Interface (UI) for customer interaction, Reservation Management System for booking and confirmation, Vehicle Inventory and Management for tracking car availability, and Payment and Billing System for secure online transactions. The Level-0 diagram depicts these components as integral parts, while the Context Diagram illustrates their interactions with the external environment, including customers and servers.
Step-by-step explanation:
Sure, let's decompose the Online Car Rental System into four components and define requirements for each, followed by a Level-0 diagram and a Context Diagram.
a)Components:
1. User Interface (UI):
Requirement 1: The UI should provide an intuitive and user-friendly interface for customers to browse, select, and reserve rental cars.
Requirement 2: The UI should support secure user authentication and authorization processes.
2. Reservation Management System:
Requirement 1: The system should allow users to check car availability, view rental details, and make reservations.
Requirement 2: The reservation system should send confirmation emails to customers and update the inventory in real-time.
3. Vehicle Inventory and Management:
Requirement 1: The system should maintain an up-to-date inventory of available cars, including details such as model, availability, and pricing.
Requirement 2: The management system should track vehicle maintenance schedules and automate notifications for servicing.
4. Payment and Billing System:
Requirement 1: The payment system should support secure online transactions and provide multiple payment options.
Requirement 2: The billing system should generate detailed invoices, including rental charges, taxes, and any additional fees.
Level-0 Diagram:
+--------------------------------+
| Online Car Rental |
| System |
+---------------|----------------+
|
+--------------v----------------+
| |
| User Interface |
| Component |
| |
+---------------|---------------+
|
+--------------v---------------+
| |
| Reservation |
| Management |
| Component |
| |
+--------------|----------------+
|
+-------------v----------------+
| |
| Fleet Management |
| Component |
| |
+-------------|----------------+
|
+------------v----------------+
| |
| Payment and Billing|
| Component |
| |
+-----------------------------+
Context Diagram:
+--------------------------------------+
| Online Car Rental |
| System |
+-------------------|------------------+
|
+------------------v------------------+
| External User |
| (Customer) |
+-----------------|--------------------+
|
+-----------------v--------------------+
| External |
| Reservation System |
+----------------|---------------------+
|
+----------------v---------------+
| Payment Gateway |
+--------------------------------+
In the context diagram, the "External Environment" represents external entities such as customers, servers, and other systems interacting with the Online Car Rental System. The four components (UI, Reservation Management System, Vehicle Inventory and Management, Payment and Billing System) are shown within the system boundary, illustrating their interactions with the external environment.