What is Business Logic  will explain with same example IRCTC API?

In IRCTC (Indian Railway Catering and Tourism Corporation) API, business logic means the rules and steps the system follows to handle train bookings, cancellations, checking availability, and so on.


Simple Example: Booking a Train Ticket

Imagine you want to book a ticket for Train 123 on May 20.

Here’s what the IRCTC API does (business logic):

1. Check Seat Availability  
   It checks if seats are available on Train 123 for May 20.

     If seats are NOT available, it tells you: “Sorry, no seats available.”

2. Calculate Ticket Price
   If seats are available, it calculates how much the ticket costs based on train and class.

3. Process Payment
   It takes your payment information and checks if the payment is successful.

     If payment fails, it tells you: “Payment failed, please try again.”

4. Confirm Booking
   If payment is successful, it books your ticket and sends you the ticket number