Mission Statement, Customers, and Stakeholders 33
maintainability ◾
and so on ◾
For the pet store POS system, customers want
speed ◾
accuracy ◾
clarity (in the printed receipt) ◾
efficiency ◾
ease of use (especially if self-service provided) ◾
and more ◾
So we would use our best efforts to attend to these needs. e problem becomes,
however, how do we measure satisfaction of these needs? Because, if these wants
and desires cannot be measured, then we will never achieve them. We will discuss
the issue of requirements satisfaction in Chapter 5.
What Don’t Customers Want?
Sometimes customers are very explicit in what they don’t want the system to do.
ese specific undesirable features or “do not wants” are frequently overlooked by
the requirements engin