Question

A banking system provides users with several services: (i) to check their accounts to see recent transactions and balances; (ii) to pay bills online; (iii) to buy and sell investments. All of these services requires a secure log-in. If the system crashes or the network connection fails during a transaction, it is essential that all the financial data is left in a consistent state. (a) Draw use case diagrams for these requirements. (b) Give the use case specification for paying a bill online.

Answer 1

Answer:

ALL THE DATA IS STORE IN SERVER WHEN THE CONNECTION LOST OR HAVE SOME ERROR IT WILL BE RECHECK DURING THE TIME WHEN IT RECONNECT AND YOUR MONEY WILL WE REFUNDED BACK IF DIDUCTED OR B PAID TO THE USER