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🎨 UML Diagram Generated (PLANTUML): Model: Banking System Format: plantuml Copy the markup below into your preferred UML tool: --- @startuml title Banking System note top of Customer A comprehensive banking system for managing accounts, customers, transactions, and loans end note class Customer { -customerId: string -firstName: string -lastName: string -email: string -phone: string -dateOfBirth: Date -address: Address -creditScore: number +openAccount(accountType: string): Account +closeAccount(account: Account): boolean +applyForLoan(loanAmount: number, loanType: string): LoanApplication +getAccountBalance(account: Account): number +transferFunds(fromAccount: Account, toAccount: Account, amount: number): boolean } class Account { -accountNumber: string -accountType: string -balance: number -interestRate: number -dateOpened: Date -{readOnly} isActive: boolean -minimumBalance: number +deposit(amount: number): boolean +withdraw(amount: number): boolean +getBalance(): number +getTransactionHistory(): Transaction[] +calculateInterest(): number +closeAccount(): boolean } class Transaction { -transactionId: string -transactionType: string -amount: number -timestamp: Date -description: string -status: string -fromAccount: Account -toAccount: Account +processTransaction(): boolean +validateTransaction(): boolean +getTransactionDetails(): string } class Loan { -loanId: string -loanType: string -principalAmount: number -interestRate: number -termMonths: number -startDate: Date -endDate: Date -monthlyPayment: number -outstandingBalance: number -loanStatus: string +calculateMonthlyPayment(): number +makePayment(amount: number): boolean +getRemainingBalance(): number +refinanceLoan(newInterestRate: number): boolean } class Branch { -branchId: string -branchName: string -address: Address -phoneNumber: string -manager: Employee -operatingHours: string +openBranch(): boolean +closeBranch(): boolean +addCustomer(customer: Customer): boolean +getBranchDetails(): string } class Employee { -employeeId: string -firstName: string -lastName: string -position: string -department: string -salary: number -hireDate: Date -branch: Branch +processTransaction(transaction: Transaction): boolean +approveLoan(loanApplication: LoanApplication): boolean +openCustomerAccount(customer: Customer, accountType: string): Account +getEmployeeDetails(): string } class Address { -street: string -city: string -state: string -zipCode: string -country: string +validateAddress(): boolean +getFullAddress(): string +updateAddress(newAddress: Address): boolean } class LoanApplication { -applicationId: string -customer: Customer -loanType: string -requestedAmount: number -applicationDate: Date -applicationStatus: string -creditScore: number -income: number -approvedBy: Employee -approvalDate: Date +submitApplication(): boolean +updateStatus(status: string): boolean +getApprovalStatus(): string +calculateLoanTerms(): Loan } Customer "1" --> "0..*" Account : owns Account "1" --> "0..*" Transaction : has Customer "1" --> "0..*" Loan : has Customer "1" --> "0..*" LoanApplication : submits Branch "1" --> "0..*" Customer : serves Branch "1" --> "0..*" Employee : employs Employee "1" --> "1" Branch : works at Customer "1" --> "1" Address : lives at Branch "1" --> "1" Address : located at LoanApplication "1" --> "0..1" Employee : approved by LoanApplication "1" --> "0..1" Loan : results in @enduml ---