... two of the tables based on the join conditions, comparing their columns.2. Oracle joins the result to another table, based on join conditions.3. Oracle continues this process until all tables ... first join condition can reference columns from only the first and second tables; the second join condition can reference columns from the first, second, and third tables; and so on. Consider the ... follows:SELECT regions.region_id, region_name, countries.country_id, country_name, location_id, cityFROM regions, countries, locationsWHERE regions.region_id = countries.region_idAND countries.country_id...