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The city table contains a list of cities.
city
The city table is referred to by a foreign key in the address table and refers to the country table using a foreign key.
address
country
city_id: A surrogate primary key used to uniquely identify each city in the table.
city_id
city: The name of the city.
country_id: A foreign key identifying the country that the city belongs to.
country_id
last_update: The time that the row was created or most recently updated.
last_update
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