Preliminaries
time of discovery and type of defect, is used to predict the count of re-
maining defects. Once again this information is often imprecise, though
nevertheless used in planning.
Several tools exist for recording defects, and computing and report-
ing defect-related statistics. Bugzilla, open source, and FogBugz, com-
mercially available, are two such tools. They provide several features for
defect management, including defect recording, classification, and track-
ing. Several tools that compute complexity metrics also predict defects
using code complexity.
1.10 EXECUTION HISTORY
Execution history of a program, also known as execution trace, is an
organized collection of information about various elements of a pro-
gram during a given execution. ...