CREATE TABLE train (train_id NUMBER, name CLOB, time CLOB, service CLOB)
CREATE TABLE train_station (train_id NUMBER, station_id NUMBER)
CREATE TABLE station (station_id NUMBER, name CLOB, annual_entry_exit NUMBER, annual_interchanges NUMBER, total_passengers NUMBER, location CLOB, main_services CLOB, number_of_platforms NUMBER)

How many train stations are there?
SELECT COUNT(*) FROM station
SELECT COUNT(*) FROM "station"