accept the customer id and validate for availability before adding in the set of account, along with the sanctioned limit and monthly due amount to pay.
recover the monthly payment of money and reduce it from the balance due in the account. validate whether there is any pending balance of amount due from the customer. All due amounts should be recovered and decide the status of his account to retain in the overdue list or not.
list all the overdue customer details for certain range of overdue amount.
list all the customer for a range of amount of limit sanctioned.
close the account and remove entry of the customer as the person quit the system after settling the payment due. note to verify all sorts of accounts for deleting the entry.
a report generating all the items in the enquiry of every type of data needs to be produced with all possible filters.
把所用的15分全给了，只要找到满意的答案。其中有sanctioned limit 和pending balance of amount due 以及最后一项不太懂。希望能找到好答案~