Read the following case for a bank ATM system: Your client, Econ MiniBank, requests for a simple Automatic Teller Machine (ATM) system with the following requirements: The system must be able to accept a customer's ATM card via a card reader and validate the account number using an account numbers file. The customers transaction information, on the other hand, is entered via a key panel and validated by the system. For valid account holders issuing valid transactions, the system determines the transaction type, which can be one of the following: display of account statement, hardcopy of account statement, cash transfers and requests for chequebook. Transaction information would therefore include items like the customer's request (transaction type), cash transfer amount, and transferee's account number For account statement requests, the system retrieves the account information from a customer database and formats the information accordingly depending on whether a rdcopy or display is requested. For cash transfer requests, the cash amount and transferee's account number must be specified. Finally, for chequebook requests, the system uses a valid account number to determine the collection centre and collection date from a collection schedule log and prints a collection slip for the customer. For the above system, draw a context (level 0) diagram that shows the relationship of the system with its external entities. Note that the above case describes the system from both an external and an internal perspective. Read the following case for a bank ATM system: Your client, Econ MiniBank, requests for a simple Automatic Teller Machine (ATM) system with the following requirements: The system must be able to accept a customer's ATM card via a card reader and validate the account number using an account numbers file. The customers transaction information, on the other hand, is entered via a key panel and validated by the system. For valid account holders issuing valid transactions, the system determines the transaction type, which can be one of the following: display of account statement, hardcopy of account statement, cash transfers and requests for chequebook. Transaction information would therefore include items like the customer's request (transaction type), cash transfer amount, and transferee's account number For account statement requests, the system retrieves the account information from a customer database and formats the information accordingly depending on whether a rdcopy or display is requested. For cash transfer requests, the cash amount and transferee's account number must be specified. Finally, for chequebook requests, the system uses a valid account number to determine the collection centre and collection date from a collection schedule log and prints a collection slip for the customer. For the above system, draw a context (level 0) diagram that shows the relationship of the system with its external entities. Note that the above case describes the system from both an external and an internal perspective
