| Table | Field | Data Type | Size | Description | Constraint |
|---|---|---|---|---|---|
| Bank | bank_id | int | 10 | Bank ID | Primary key |
| Bank | bank_name | varchar | 50 | Bank name | |
| ATMs | atm_id | int | 10 | ATM ID | Primary key |
| ATMs | atm_address | varchar | 50 | ATM location | |
| ATMs | bill_limit | smallint | 4 | Limit of physical bills | |
| ATMs | cash_limit | smallint | 5 | Limit of cash value | |
| Users | user_id | int | 10 | User ID | Primary key |
| Users | first_name | varchar | 10 | First name | |
| Users | last_name | varchar | 10 | Last name | |
| Users | address | varchar | 50 | Client address | |
| Users | phone_num | varchar | 15 | Client phone # | |
| Cards | card_id | int | 10 | Card ID | Primary key |
| Cards | card_num | char | 16 | Card number | Unique key |
| Cards | pin | char | 4 | Card pin # | |
| Accounts | account_num | int | 10 | Account # | Primary key |
| Accounts | balance | decimal | 50 | Account balance | |
| Deposit | trans_id | int | 10 | Transaction ID | Primary key |
| Deposit | trans_amount | decimal | 10 | Deposit amount | |
| Deposit | trans_date | timestamp | Deposit timestamp | ||
| Withdraw | trans_id | int | 10 | Transaction ID | Primary Key |
| Withdraw | trans_amount | decimal | 10 | Withdrawal amount | |
| Withdraw | trans_date | timestamp | Withdrawal timestamp |