Session 5
Modular Design for the Railway Reservation System
This session focuses on dividing the Railway Reservation System into smaller modules. A good modular design makes the system easier to understand, implement, test, and modify because each part has a clear responsibility.
Problem Statement
Develop a modular design for RRS.
Expected Deliverable
Break the Railway Reservation System into modules and define each module's responsibility, inputs, outputs, and dependencies.
Proposed Modules
| Module | Responsibility |
|---|---|
| Authentication Module | User login, role validation, session handling |
| Train Search Module | Search train by route and date |
| Reservation Module | Seat selection, booking creation, PNR generation |
| Cancellation Module | Cancellation request and refund initiation |
| Payment Module | Payment request, response handling, transaction status |
| Schedule Management Module | Admin updates to train schedule and route |
| Notification Module | SMS/email alerts |
| Reporting Module | Booking, cancellation, revenue, and occupancy reports |
Module Interface Example
| Module | Input | Output |
|---|---|---|
| Reservation | passenger details, schedule id, seat preference | PNR and booking status |
| Payment | PNR, amount, payment mode | transaction id and status |
| Cancellation | PNR, user id | cancellation status and refund status |
Design Notes
- Keep payment logic separate from reservation logic.
- Keep admin functions separate from passenger functions.
- Use clear module boundaries so testing can be done independently.