The text discusses how to implement real-time updates in a railway reservations system using Neo4j, a leading graph database, in conjunction with PubNub for real-time capabilities. The project aims to address the issue of users facing delays and missed bookings when trying to reserve emergency Tatkal train tickets on the Indian IRCTC portal, a problem exacerbated by the high volume of daily e-ticket bookings and the time-sensitive nature of these reservations. Although Neo4j excels in read and write performance, it lacks intrinsic real-time update features, which the tutorial compensates for by employing PubNub to push live seat availability data to users via a web interface. The solution involves creating and managing nodes and relationships in Neo4j to represent trains and stations and using JavaScript for the client-side interface to instantly reflect changes in ticket availability. This setup demonstrates a step towards achieving a real-time database by effectively bridging the server and client sides for immediate data updates.