Railway reservation system ER diagram modeling passenger bookings, train schedules, and station networks with normalized relational schema. The design connects PASSENGER and TICKET entities for booking management, TRAIN and SCHEDULE for route planning, and STATION with TRAIN_STATION junction table for multi-stop itineraries. This architecture supports real-time seat availability, fare calculation, payment tracking, and cancellation workflows essential for high-volume ticketing platforms. Fork and customize this diagram on Diagrams.so to adapt schema for your regional railway or transit operator requirements.