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The Confounding World of Process Methodologies. By Thelma Hataria. Overview. Importance of Methodologies Characteristics of Heavyweight Methodologies Heavyweight Methodologies Advantages and Disadvantages Characteristics of Lightweight methodologies Agile (Lightweight) Methodologies

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overview
Overview
  • Importance of Methodologies
  • Characteristics of Heavyweight Methodologies
  • Heavyweight Methodologies
  • Advantages and Disadvantages
  • Characteristics of Lightweight methodologies
  • Agile (Lightweight) Methodologies
  • Advantages and Disadvantages
  • Conclusion
definition methodology
Definition-Methodology
  • “A methodology is a codified set of practices (sometimes accompanied by training materials, formal educational programs, worksheets, and diagramming tools) that may be repeatedly carried out to produce software”-Wikipedia
importance of methodologies
Importance of Methodologies
  • Earlier method “Code and Fix”
  • Methodologies impose a disciplined process upon software development
  • An inappropriate choice of methodology can lead to delayed delivery, project failure and customer dissatisfaction
  • Making an informed choice will lead to high quality software
types of methodologies
Types of Methodologies

Methodologies

LightweightMethodologies

Heavyweight Methodologies

characteristics of heavyweight methodologies
Characteristics of Heavyweight Methodologies
  • Plan-Oriented
  • Detailed Documentation
  • Predictive Approach
  • Process Oriented
  • Tool Oriented
heavyweight methodologies waterfall model
Heavyweight Methodologies “Waterfall Model”
  • Real heavyweight methodology
  • Phase oriented
  • Changes in requirements are not readily acceptable
  • Minimum customer involvement
heavyweight methodologies spiral model
Heavyweight Methodologies “Spiral Model”
  • Not so heavy
  • Iterative & incremental approach
  • Focuses on risk resolution
  • Plan oriented
heavyweight methodologies rational unified process
Heavyweight Methodologies “Rational Unified Process”
  • Lightest heavyweight methodology
  • Focuses on process improvement
  • Iterative approach
  • Changes can be accommodated readily
  • Tool oriented
advantages of heavyweight methodologies
Advantages of Heavyweight Methodologies
  • Safe Approach -“Tried and Tested”
  • Reliable
  • Work towards customer satisfaction
  • High Quality of Software
disadvantages of heavyweight methodologies
Disadvantages of Heavyweight Methodologies
  • Bureaucratic by nature
  • Detailed activities slow process development
characteristics of lightweight methodologies
Characteristics of LightweightMethodologies
  • People-Oriented
  • Conformance to Outcomes
  • Adaptive Approach
  • Balancing Flexibility and Planning
  • Decentralized Approach
  • Limited Team Size
lightweight methodologies extreme programming xp
Lightweight Methodologies “Extreme Programming (XP)”
  • Short iteration cycles (2-3 weeks)
  • Communication and Feedback
  • Concentrates on Productivity
  • Pair Programming Approach
  • Complete customer involvement
  • Frequent Integration
lightweight methodologies scrum
Lightweight Methodologies “Scrum”
  • Very short iteration cycles(30 days)
  • Sprint meetings held for each iteration
  • Demonstration of updates
  • Close monitoring through scrum meetings
  • More importance to working software
lightweight methodologies crystal family
Lightweight Methodologies “Crystal Family”
  • Heavy Lightweight methodology
  • Heaviness of methodology can vary depending on the criticality and size of the project
  • Group of approaches for different team sizes
  • Each team have different set of talent and skills
  • Dependent on advice of experts
advantages of lightweight methodologies
Advantages of Lightweight Methodologies
  • Flexible approach
  • Accommodate changes
  • Faster delivery
  • Customer satisfaction
disadvantages of lightweight methodologies
Disadvantages of Lightweight Methodologies
  • Experts not always on hand
  • Progress cannot be always tracked
conclusion
Conclusion
  • Both classes of methodologies have one goal-”Software Quality”
  • Project characteristics and organizations goals need to be matched to objectives of the methodology
  • Heavyweight methodologies is the best option when reliability is the issue
  • Lightweight methodologies are needed where customer requirements change constantly
thank you
Thank you

Any questions?