UML class diagram - Bank account

This bank account UML class diagram was redesigned from the Wikimedia Commons file: BankAccount1.svg.
[commons.wikimedia.org/ wiki/ File:BankAccount1.svg]
"Bank accounts may have a positive, or credit balance, where the bank owes money to the customer; or a negative, or debit balance, where the customer owes the bank money.
Broadly, accounts opened with the purpose of holding credit balances are referred to as deposit accounts; whilst accounts opened with the purpose of holding debit balances are referred to as loan accounts. Some accounts can switch between credit and debit balances.
Some accounts are categorized by the function rather than nature of the balance they hold, such as savings account.
All banks have their own names for the various accounts which they open for customers." [Bank account. Wikipedia]
This bank account UML class diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the ATM UML Diagrams solution from the Software Development area of ConceptDraw Solution Park.

"Credits and deposits.
To add credit to an account by bringing cash to a bank in person, the account holder can fill a small credit slip or deposit slip. The total amount of each note and coin is counted and entered on the slip, along with who it is paid in by and the date. The cash and details are counted and checked by the teller at the bank, if everything is in order the deposit is credited to the account, the credit slip is then kept by the bank and the credit slip booklet is stamped with the date and then returned to the account holder.An account holder uses their passbook to record their history of transactions with their bank." [Passbook. Wikipedia]
The UML activity diagram example "Deposit slip processing" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.