1. Cmpe 589
Spring 2008
Lecture 1

2. Software Quality Definable and measurable Quality:
Conformance to requirements, non-conformance is a defect
Fitness for use- meets customer expectations

3. Software Quality Quality of Design: Quality of Conformance
Grades/ Models
Customer purchasing power
Quality of Conformance
Degree to which the product meets design specification

4. Software Quality Role of Customer
“Small q” –producer perspective, acceptable product defect rate and acceptable reliability.
“Big Q” – Product quality, process quality, and customer satisfaction

5. Software Quality Customer wants and needs Requirements specification
Problem of
the 90’s
Customer wants and needs
Requirements specification
Products designed and
implemented with forms on
continuous improvement
Loop
Good product quality and
Good support services
Good customer satisfaction

6. Software Quality Conformance to functionality?
Defect Rate
Reliability
Measure- customer satisfaction
Interrelationships Among Software Attributes
Measures
Models

7. Software Quality Total Quality Management (TQM)
Continuous
Improvement
Total Quality
Management (TQM)
Customer Focus
Process
Improvement
Human side
quality
Metrics, Models, Measurement and
Analysis

8. Software Quality
Plan-do-check-act: feedback loop and statistical quality control
Quality Improvement Paradigm: internal assessment of company goals and status
Characterize product and its environment
Set goals
Choose appropriate processes
Execute Processes
Analyze Data
Package Expertise for Reuse

9. Software Quality S.E.I – Capability and Maturity Model
Stage process improvement – 1-5 stages
Library of repeatable processes
Defect prevention
Technology innovation
Process change methodology
Lean Enterprise Model
Concentrate on value added activities
Eliminate non-value added activities

10. Software Quality Ethical Basis for Quality Technical Issues
Professional Issues
Social Issues