I am creating a simple database and am unsure of whether the tables are normalized to 3NF. I think the correct PKs have been bolded.

Branch	(bankId, bankbranchId, branchName, address, assets)
LoanManager	(bankId, employeeId, employeeName, loannumber)
Loan	(loanNumber, amount, startDate, duration, interest)
LoanPayment	(transactionId, amount, transactiondate, loanNumber, customerId)
Customer	(customerId, ssn, firstName, lastName, phoneNumber, address)
Account	(accountNumber, type, balance, customerId)
CreditCard	(cardnumber, limit, expirationDate, customerId)
CreditCardBill	(invoiceNumber, balance, dueDate, cardNumber)

This is the ER diagram for the proposed sample database

. LoanManager 1..1 employeeldfPK) employeeName 1..1 Bank Branch Bank 1..1 1..1 bankbranchld PK branchName address assets signs off orn bankld PK bankName address 1..1 Customer Loan Account customerld (PK) 1..1 o.loanNumber PK! amount startDate duration interest ssn accountNumber PK! type balance 11 firstName lastName phoneNumber address Issues 1..1 LoanPayment 1..1 1..1 transactionld PK transactionType amount transactionDate CreditCard cardNumber(PK) limit expirationDate 1..1 CreditCardBill 1..1 invoiceNumberfPKj balance dueDate