Understanding Why Software Defects Occur
A defect in software results from some type of mistake. Usually these mistakes are a result of human error, but sometimes they are caused by systemic errors in the development process. Mistakes can also result from faulty development tools, a misunderstanding of customer requirements, or other issues that arise in the course of software development. Fortunately, not every mistake leads to a defect, but almost all defects can be traced back to some type of mistake (see Table 1-2).
| Typical Mistakes That Cause Software Defects | |
|---|---|
| Mistake | Communication difficulties between customers and software developers |
| Software Defect | Desired software functionality is missing ... |
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