Quality management

3298 mots 14 pages
Quality Management

©Ian Sommerville 2004

Software Engineering, 7th edition. Chapter 27

Slide 1

Objectives








To introduce the quality management process and key quality management activities To explain the role of standards in quality management To explain the concept of a software metric, predictor metrics and control metrics To explain how measurement may be used in assessing software quality and the limitations of software measurement

©Ian Sommerville 2004

Software Engineering, 7th edition. Chapter 27

Slide 2

Topics covered
● ● ● ●

Process and product quality Quality assurance and standards Quality planning Quality control

©Ian Sommerville 2004

Software Engineering, 7th edition. Chapter 27

Slide 3

Software quality management






Concerned with ensuring that the required level of quality is achieved in a software product. Involves defining appropriate quality standards and procedures and ensuring that these are followed. Should aim to develop a ‘quality culture’ where quality is seen as everyone’s responsibility.
Software Engineering, 7th edition. Chapter 27 Slide 4

©Ian Sommerville 2004

What is quality?




Quality, simplistically, means that a product should meet its specification. This is problematical for software systems
• There is a tension between customer quality requirements (efficiency, reliability, etc.) and developer quality requirements (maintainability, reusability, etc.); Some quality requirements are difficult to specify in an unambiguous way; Software specifications are usually incomplete and often inconsistent.

• •

©Ian Sommerville 2004

Software Engineering, 7th edition. Chapter 27

Slide 5

The quality compromise




We cannot wait for specifications to improve before paying attention to quality management. We must put quality management procedures into place to improve quality in spite of imperfect specification.

©Ian Sommerville

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