2. Defect resolution  Defect logging  Defect tracking  Consistent defect interpretation and tracking  Timely defect reporting

3. Software maintenance  Defect handling = problems are logged, analyzed and resolved = complete tracking record kept Post-release  Defect containment Software development  Defect prevention  Defect reduction

4. Where are the error sources?  conceptual mistakes by designers and programmers  unfamiliarity with the product domain  inexperience with the specific development methodologies, etc. What can be done?  defect prevention How?  Error source removal or  Error blocking

6. 1. Definitions of Quality 2. Dimensions of Product Quality 3. Dimensions of Service Quality 4. Spheres of Quality (Quality Control, Quality Assurance, Quality Management) 5. Software Quality  Expectations on Software Quality  Quality Framework  Correctness and Defects (error, fault, failure)  Defect prevention, detection and removal, defect containment

7. 7. Defect Classifications  Defect Prevention (Education & Training, Formal Methods, other methods)  Defect Reduction (Inspection &Testing)  Defect Containment (Fault Tolerance & Safety Assurance & Fault Containment) 8. Quality Assurance in context (today’s lesson)