Inquiries from Exponent Bank.

In this scenario, in the absence of a specific question from Exponent Bank, we will presume that as a System Design expert, you are tasked with developing a banking system for Exponent Bank. This typically entails designing a solution to manage the standard operations of a bank, such as handling customer banking information, processing transactions, and overseeing bank accounts. To effectively respond to the question, please consider the following essential points: Identification of the key components of a banking system, including accounts, transactions, users, and bank staff. Analysis of the functionality associated with each component. What actions are possible for or by each component? Examination of how components interact with one another. In what manner does a user engage with an account to carry out a transaction? How does an employee handle these transactions? Assumptions and constraints . As with any system design challenge, you will need to make certain assumptions due to the intricacies and breadth of a real-world system. Be sure to articulate these assumptions clearly.

Creating a banking system entails several key elements. Let's outline these elements: Users : The bank's clients. They can access their account information, initiate transactions, and review their transaction history. Accounts : Each account is associated with a user. It has a balance and can be classified as either a checking account or a savings account, often featuring different options. Transactions : Users engage in transactions such as depositing and withdrawing funds, transferring money between accounts, and paying bills. Employees : Bank staff, including tellers and managers, use the system to process user transactions, maintain accounts, and assist customers. A user engages with their account to execute transactions. Each transaction affects the account balance and is recorded in the transaction history. Employees handle these transactions and oversee account management. For the sake of this discussion, let's assume that each account is tied to a user, who is the only individual authorized to conduct transactions for that account.

When designing the system for Exponent Bank, we should concentrate on the following key components: Customers , Accounts , Transactions , and Bank Employees . Customers may hold several types of accounts, including checking and savings accounts. Each account features a balance and a history of transactions. Transactions will encompass activities such as deposits, withdrawals, transfers, and bill payments. Each transaction will include details such as the transaction amount, type, associated accounts, and timestamp. Bank employees, such as customer service representatives or account managers, will have the ability to view customer accounts and carry out necessary operations based on their designated roles and responsibilities. It is crucial to address concurrency management in the design since multiple transactions may occur simultaneously on the same account. A robust system will be needed to ensure proper synchronization and prevent data inconsistencies. Additionally, security and access control must be considered. For example, sensitive actions (such as transferring large sums of money) may necessitate verification through double-checking, OTP, or multi-factor authentication.