The technophobe customer may refuse to give their credit card out on a web site, and so the system flow will need to accommodate telephone and fax ... In this example, a diagram illustrating the system shows the system boundary as a box around your internal software and servers. The credit card processing vendor functions as a role and is pictured as an outside actor interacting with your core system.
|Title||:||Web Project Survival Guide|
|Publisher||:||Rareclarity - 2004-02-01|