5.1.4 The city Table

The city table contains a list of cities.

The city table is referred to by a foreign key in the address table and refers to the country table using a foreign key.

Columns

• city_id: A surrogate primary key used to uniquely identify each city in the table.

• city: The name of the city.

• country_id: A foreign key identifying the country that the city belongs to.

• last_update: When the row was created or most recently updated.