Valitse tietokannat, jotka ovat yleensä kahden tason.
Tietenkin monimutkaisempi versio lauseesta on "Pick data files are usually two levels - the first level is known as the '' dictionary '' level and is mandatory". "Pick data files are usually two levels - the first level is known as the '' dictionary '' level and is mandatory". "Pick data files are usually two levels - the first level is known as the '' dictionary '' level and is mandatory".