This section discusses the pertinent structural properties that can be
measured for UML designs. For each property we provide the following
Definition: a short definition of the property.
Impact on quality: the system quality attributes the
property is hypothesized to impact, and why.
Empirical results: qualitative summary of results from
empirical studies investigating the usefulness of measures of the
structural property. The summary is based on a literature survey and
comprehensive empirical investigation of design metrics, see
[BW02] for full details.