Airline Booking System Entities and Attributes Entities An entity is an object that exists. An entity can be a single thing, person, place, or object. data can be stored about such entities. 1. Ticket Agency Entity 2. Flight Entity 3. Airline ticket 4. Passenger Entity Attributes An attribute defines the information about the entity that needs to be stored. An entity will have zero or more attributes, and each of those attributes applies only to that entity. 1 . Ticket Agency: Agent, phone_number, email_addrest, Ticket_type, Booking_number 2. Flight : total_seats, Arrival_date & time, Departure date & time , Flight_ticket, destination airport 3. Airline ticket: Ticket_id, description, seat number 4 . Passenger : Name , passport_number, email Relationships There are three types of relationships in this chosen scenario. They are one to one, one to many, many to many. 1. Ticket agency has tickets (one to many) 2. Ticket agency has flight (one to many) 3. Ticke