Cox's Bazar Train Line System Database

Cox's Bazar, known for its breathtaking beaches, is expanding its transportation infrastructure with

a train line system to facilitate efficient and comfortable travel. The database will manage information

related to train stations, trains, passengers, and schedules. Train stations are vital entities, each

identified by a unique station code, and include attributes such as station name, location, and facilities

provided.

The Cox's Bazar Train Line comprises multiple train services, each identified by a service code. Trains

have attributes such as type $($e$.$g$.,$ express, local$),$ seating capacity, and current operational status $($e$.$g$.,$

in service, canceled$).$ Passengers are integral to the system, each with a unique passenger ID and

attributes including name, contact information, and a travel card ID for fare transactions.

As passengers travel between stations, the system records the journey details, including the boarding

and alighting stations, travel time, and fare. Some stations serve as transfer hubs, allowing passengers

to switch between different train services.

The database must capture the relationships between stations, trains, and passengers to facilitate

efficient scheduling and passenger information retrieval. Additionally, in an effort to enhance the

passenger experience, the train line system is considering the introduction of a loyalty program.

Passengers accumulating frequent travel points will be eligible for discounts or other perks. The

database needs to store information related to the loyalty program, including points earned and

redeemed by passengers.

Questions:

$$ Identify the entities in this scenario. Define the relationships between the entities. List the

attributes for each entity. Determine the cardinalities of the relationships.

$$ Draw an Entity$-$Relationship Diagram $($ERD$)$ for the given scenario.

$$ Discuss if any generalization concept could be applied in this scenario, particularly in the

context of integrating digital ID cards, and justify your answer

$*$Draw the erd by hand you don't have to explain anything just draw