How PNR number is generated?

Related questions

1. How can I get flushed PNR status?
2. What is PNR number Qatar?
3. What does PNR number include?
4. How can I get PNR status by SMS?
5. How do I know if my train is superfast?
6. How many RAC get confirmed?
7. What is PNR full form?
8. How many times chart is prepared?
9. What decides train number?
10. Is RAC is confirmed ticket?

Tags

1. #found
2. #booked
3. #stations
4. #system
5. #passenger
6. #after
7. #record
8. #corner
9. #ticket
10. #digit
11. #automatically
12. #number
13. #stands
14. #classic
15. #railway
16. #generated
17. #tickets
18. #upper