In order to maintain the consistency of the
traceability, this artifact must be re-assessed every time there is a change to the requirement or at the end of
each milestone.
In a small simple project, the
traceability matrix can be maintained in a spreadsheet. Automated tool support is helpful in a complicated
large-scale project.
There are project resource costs to establishing and maintaining traceability. It is important to establish just enough
traceability to support completeness checking and change impact analysis without over-using the technique by tracing
"everything to everything".
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