SQA Tasks, Goals, Attributes, and Metrics

Goals, Attributes, and Metrics:

Requirement quality : The correctness, completeness, and consistency of the requirements model will have a strong influence on the quality of all work products that follow. SQA must ensure that the software team has properly reviewed the requirements model to achieve a high level of quality.

Design quality : Every element of the design model should be assessed y the software team to ensure that it exhibits high quality and that the design itself conforms to requirements.

Code quality : Source code and related work products must conform to local coding standards and exhibit characteristics that will facilitate maintainability.

Quality control effectiveness : A software team should apply limited resources in a way that has the highest likelihood of achieving a high–quality result. SQA analyzes the allocation of resources for reviews and testing to assess whether they are being allocated in the most effective manner.

Software quality goals, attributes, and metrics

Goal	Attribute	Metric
Requirement  quality	Ambigully	Number of ambiguous modifiers (e.., many, large, human–friendly)
	Completeness	Number of TBA, TBD
	Understandability	Number of sections/subsections
	Volatility	Number of changes per requirement Time (by activity) when change is requested
	Traceability	Number of requirements not traceable to design/code
	Model clarity	Number of UML models Number of descriptive pages per model Number of UML errors
Design quality	Architectural integrity Component completeness Interface complexity Patterns	Existence of architectural model Number of components that trace to architectural model Complexity of procedural design Average number of pick to get to a typical function or content Layout appropriateness Number of patterns used
Code quality	Complexity Maintainability Understandability Reusability Documentation	Cyclomatic complexity Design factors (Chapter 8) Percent internal comments Variable naming conventions Percent reused components Readability index
QC effectiveness	Resource allocation Completion rate Review effectiveness Testing effectiveness	Staff hour percentage per activity Actual vs. budgeted completion time See review metrics Number of errors found and criticality Effort required to correct an error Origin of error