Quality Assurance in Software Development Life-cycle (SDLC)

1. Quality Assurance
in
Software Development Lifecycle
Concepts, Practices, and Challenges
Adil Ahmed Mughal

2. About This Session
• What you must already know?
– Basic concepts of Software Engineering
• What you will learn today?
– Understanding commonly used concepts
– How do we use theory in practice
– What are the challenges we faced in industry

3. About This Session
• What you must already know?
– Basic concepts of Software Engineering
This is not a single side talk, its discussion!
• What you will learn today?
Promise me that you will raise hand when you
– Understanding commonly used concepts
have anything to say?
– How do we use theory in practice
– What are the challenges we faced in industry

4. About Speaker
Adil Ahmed Mughal
Affiliations:
Contact Information:
adil.mughal@live.com
@adilamughal
http://www.adilmughal.com

5. Concepts & Terminologies
• What is Quality?
– Conformances to requirements
– Fitness for use
– performs these specified functions correctly over
repeated use or over a long period of time

6. Concepts & Terminologies
• Purpose of QA
– To ensure software quality through the related set
of (validation and verification) activities

7. Concepts & Terminologies
Quality Assurance != Testing

8. Concepts & Terminologies
• Software Development Lifecycle (SDLC)
Planning Design Testing
Analysis Development Maintenance

9. Concepts & Terminologies
• SDLC & Quality Assurance
Quality Assurance (Umbrella)
Planning Design Testing
Analysis Development Maintenance
Quality Planning
Execution (Verification and Validation)
Measurement and Analysis

10. Concepts & Terminologies
Quality Assurance > Testing

11. Concepts & Terminologies
Functional & Non-Functional Testing

12. Concepts & Terminologies
Functional Non-Functional
Integrating Installation Interoperability
System Testing
Testing
Regression Compatibility Usability
API Testing
Testing
GUI Validation Documentation Globalization Security
Testing Review

13. Concepts & Terminologies
Error, Fault, Failure and Defect

14. Concepts & Terminologies
Error Fault Failure
• Missing/Incorrect • Incorrect step in • Inability of a
Human action computer program system
• Behavioral
deviation
Collectively referred as Defect

15. Concepts & Terminologies
Verification and Validation?

16. Concepts & Terminologies
Verification Validation
• Verification evaluates • Validation evaluates the
documents, plans, code, product itself.
requirements, and
specifications
• Involves the execution of
tests designed to cover each
• For example, of the specific system
• Inconsistent Requirements requirements
• Design Walkthroughs
• Code Inspections

17. Concepts & Terminologies
Verification Validation
• Verification evaluates • Validation evaluates the
documents, plans, code, product itself.
Verification and Validation?
requirements, and
specifications
• Involves the execution of
tests designed to cover each
• For example, of the specific system
• Inconsistent Requirements requirements
• Design Walkthroughs
• Code Inspections

18. Practices
• So how it is done in Industry?
Planning • Create a QA plan/test strategy
Analysis • Specification Review
Design
Development • Develop test cases for testing (validation)
• Test cases execution on developed software
Testing and Integration testing
Deployment • Build validation/Shipment assurance

19. Practices
• It could be improved like
• Create a QA plan/test strategy
Planning
• Review project plan
Analysis • Specification Review
Design • Analyze design
• Develop test cases for testing (validation)
Development • Code Inspection/Review
• Unit Testing
• Test cases execution on developed software
• Integration testing
Testing
• Test Automation (tools)
• Non-Functional Testing
Deployment • Build validation/Shipment assurance

20. Challenges
Focus on Functional Testing

21. Challenges
Relative Cost of Bug Fix

22. Challenges

23. Challenges
Time
Quality
Feature Cost

24. Challenges
Career Path and Opportunities
Myth: Those who are not comfortable
with programming takes QA job

25. Thank You!
Adil Ahmed Mughal
adil.mughal@live.com
@adilamughal
http://www.adilmughal.com