Нормализација

Определување на функционални зависности

transaction_id = R { account_id, username, e-mail, password, balance, transaction_id, amount, type, timestamp, s_id, r_id, withdraw_id, deposit_id, transferred_id, currency }

account_id -> username, e-mail, password, balance

transaction_id -> amount, type, timestamp, account_id

withdraw_id -> account_id, amount, timestamp

deposit_id -> account_id, amount, timestamp