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If we must keep the existing system, we’ll probably build a bridge between the two systems for exchanging data. In this case, do we need a one-way bridge or a two-way bridge? Chronological Events Who orders a car for the show room and why; how is the order made phone, fax, email, website; can a car in the showroom be sold to a customer? Sources and Destinations Here we question about information, money, bills, goods, and services. For example, what is the source of a car? What’s its destination? Is the buyer of a car always an individual, or can it be another company? Urgency Thinking about the current way in which you deal with information, which problems do you consider the most urgent to solve? Avoid Focusing on Reports and Screens An approach too centered on the (perceived) needs of the users may lead to gaps in the data structure, because each user does not necessarily have an accurate vision of all their needs or all the needs of other users. It’s quite rare in an enterprise to find someone who grasps the whole data picture, with the complex inter-departmental interactions that frequently occur. This bias will show up during the interviews. Users are usually more familiar with items they can see or visualize and less familiar with concepts. However, there are distinctions between the user interface (UI) and the underlying data. UI design considers ergonomic and aesthetic issues, whereas data structuring has to follow different, non-visual rules to be effective. Data Collected for our Case Study Here is a list, jotted down during the interviews, of potential data elements and details which seem important to the current information flow. It’s very important during this collection to note, not only the data elements’ names shall we say “provisional names” at this point but also sample values. The benefit of this will become apparent in Chapter 3. In the following data collection, we include sample values in brackets where appropriate.
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