Sie suchen eine Abzweigungs-/Assoziationstabelle. Die Tabellen sollten wie folgt aussehen:
create table Journeys (
Journey_Id int auto_increment primary key,
Start_Station VARCHAR(50) NOT NULL,
End_Station VARCHAR(50) NOT NULL,
Start_Time VARCHAR(50) NOT NULL,
End_Time VARCHAR(50) NOT NULL
)
create table TravelerJourneys (
traveler_journey_id int auto_increment primary key,
traveler_id int(6),
journey_id int,
foreign key (traveler_id) references travelers(National_ID_Number),
foreign key (journey_id) references Journeys (journey_id)
);