Agile Methodology
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This document discusses agile analysis and modeling processes and methodologies. It describes the core principles of the Agile Manifesto which emphasize individuals, working software, customer collaboration, and responding to change. It then outlines the agile analysis process of identifying users and goals, defining usage patterns and solutions. It also discusses the core principles and practices of extreme programming and scrum, including events, roles, and artifacts. It notes some limitations of agile methodologies in terms of dependence on user involvement and small team sizes.
Agile Methodology
- 1. CSE 2205 Software Engineering Md. Shafiuzzaman Lecture #3
- 2. Today "Individuals and interactions over processes and tools Working software over comprehensive documentation Customer collaboration over contract negotiation Responding to change over following a plan” - The Agile Manifesto
- 3. Agile analysis process • Identify System Users – Who will use the system? • Define Main Users Goals – What I as a user want to achieve with the help of the system? • Define System Usage Patterns – What are the typical user behaviors (daily, specific situations, etc.)?
- 4. Agile analysis process • Invent Functional Solutions to meet Users Goals and Usage Patterns – What is the best way to satisfy usage patterns? • Define Main Navigation Paths – What functional/action should user execute to complete usage patterns? – How many areas required to complete user goal in specific pattern?
- 5. Agile analysis process • Create User Interface Mock-ups • Polishing User Interface Elements (optional) – Can we improve User Interface to reduce clicks and provide better visibility?
- 6. Agile Modeling Core Principles • Model with a Purpose • Assume Simplicity • Embrace Change • Enabling the Next Effort is Your Secondary Goal • Incremental Change • Maximize Stakeholder Investment
- 7. Agile Modeling Core Principles • Multiple Models • Quality Work • Rapid Feedback • Software is Your Primary Goal • Travel Light
- 8. Agile Modeling Best Practices
- 9. Extreme Programming (XP) • test-first strategy – write test cases before coding • code refactoring – revise code frequently • Goal: reduce the cost of changes in requirements by having multiple short development cycles • Motivation: Changes are a natural, inescapable and desirable aspect of software-development projects, and should be planned for, instead of attempting to define a stable set of requirements
- 10. Extreme Programming Core Practices • Pair Programming • Planning Game • Whole Team • Unit Tests • Continuous Integration rather than batch • Design Improvement • Small Releases • Simple Design • System Metaphor • Collective Code Ownership • Coding Standard • Sustainable Pace
- 12. Scrum • support complex product development • consists of Scrum Teams and their associated roles, events, artifacts, and rules • each component within the framework serves a specific purpose and is essential to Scrum’s success and usage
- 13. Scrum Framework
- 14. Scrum Team • The Product Owner • The Development Team • The Scrum Master
- 15. Scrum Events • The Sprint – Sprint Planning Meeting – Daily Scrum – Development work – Sprint Review – Sprint Retrospective
- 16. Scrum Events • Canceling The Sprint • Sprint Planning Meeting – What will be done this Sprint? – How will the chosen work get done? • Daily Scrum – What has been accomplished since the last meeting? – What will be done before the next meeting? – What obstacles are in the way?
- 17. Scrum Events • Sprint Review • Sprint Retrospective • Product Backlog • Monitoring Progress Toward a Goal
- 18. The Other Agile Methodologies • Feature Driven Development Agile Methodology • Test Driven Development (TDD) Agile Methodology
- 19. Limitations of Agile Methodologies • Agile Methodologies depend heavily on the user involvement, and thus, the success of the project will depend on the cooperation and communication of the user • Agile methodologies work best for teams with relatively small number of members (no less than 3 and no more than 9)