Question

Each question contains a description of a system and for each system, you must draw one context DFD diagram and one level-1 diagram. When drawing these diagrams, if you discover that the description is incomplete, feel free to make up reasonable explanations to complete the diagrams. Use MS Visio to draw diagrams and submit your diagrams electronically using dropbox on eCourseware.   You must complete and submit DFD diagrams associated with each question to received full credit for the assignment.

Draw 1) a context data flow diagram (level-0) and 2) a level-1 diagram for cash withdrawal process for ATM at First Memphis Bank:

When a customer wishes to withdraw cash at ATM at First Memphis Bank, he or she must insert a debit cart and enter password. The ATM verifies card information and password based on customer information saved in a customer file, and displays menu options in which customer can enter the amount of cash he or she wishes to withdraw. Once the customer enters the amount, the ATM checks the fund available in the customer’s account based on data stored in an account file. The ATM dispatches the cash, and prints a receipt also using and updating the data stored in the account file.

Answer 1