4.1. Example: JSP parcel tracking application
Dynamic dialogs are often generated based on an input provided by the user. Consider the example of an automated phone-based parcel tracking system. This system would ask the user for his or her tracking number, then look up the status of that parcel in a database.
Assume that a parcel company has already implemented an enterprise information system where information about each parcel's whereabouts is sent to some central computing facility as the parcel passes through each transfer point: at pick-up, when it arrives at a processing center, when it leaves the processing center, when it arrives at the airport to be shipped to another processing center, etc. Assume further that there is an enormous ...
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