Question

When you are asked to design a database for the airline ticket reservation system, based on an Entity-Relationship Data model, which of the following could be an example of "entity"?

A. Flight Number
B. Destination city
C. Arrival time
D. Traveler

Answer 1

Out of the given options, 'Traveler' could be an example of an entity in a database for an airline ticket reservation system.

Step-by-step explanation:

In an Entity-Relationship (ER) data model, an 'entity' represents a person, place, object, event, or concept that is relevant to the database. Out of the options provided, 'Traveler' could be an example of an entity in a database for an airline ticket reservation system. The traveler is a person who interacts with the system and has attributes such as name, contact information, and frequent flyer status.