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Suppose we live in country where there is no two cities with same name. Further, in the offices table, we remove the office ID and
Suppose we live in country where there is no two cities with same name. Further, in the offices table, we remove the office ID and we plan to make City to be the primary key. Without adding anymore column to the offices table, what assumption(s) you need to make about the city to make it to be a valid primary key?
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