Hi tommaso,
Are you trying to simply move the existing data to the other table? If so, you can simply select the entire field and copy, then past these values to the second table. If the records in the first table "Database" are related to the records in the second table "Candidature", you can use a linked record filed to setup a relationship between the records in the two tables and then use a lookup filed in the Candidature table to show the values for "Campagna".