Version 6 (modified by 4 weeks ago) ( diff ) | ,
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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
transferred_id -> s_id, r_id, transaction_id, currency
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