Chapter 9. Use Examples

In the first two parts of this book, the actual work started with examples derived from the business goals. For good examples, you need to have domain knowledge—or at least an easy access to someone who has. In the first example, the team did not have enough domain knowledge—and they received that feedback from their earlier failings. The team at Major International Airport Corp. therefore sat together in a workshop. To compensate for their lack of domain knowledge, they invited business expert Bill to join them. Together with Bill’s help, Phyllis and Tony were able to derive examples for the business rules regarding airport parking lot costs.

In the second example, we worked together through a problem where I felt I had enough domain knowledge. We could have found ourselves trapped until it was too late. For the depth that we covered with this example, we had sufficient domain knowledge, so we could start after organizing some of our thoughts.