Comparison between DSDM and XP

1
Comparison between DSDM and XP

• Presented by
• Paweena Charoentham
• April 20, 2005

2
Agenda

• Introduction to Agile software development
• Overview of XP
• Overview of DSDM
• Similarities between XP and DSDM
• Differences between XP and DSDM
• Conclusion

3
What is Agile Software Development?

• Software development methodologies that are
  intended to reduce that complexity of software
  engineering
• Consists of 7 methods
• Extreme Programming (XP)
• Scrum
• Crystal Orange
• Dynamic Systems Development Method (DSDM)
• Adaptive Software Development (ASD)
• Feature-Driven Development (FDD)
• Pragmatic Programming

4
XP Extreme Programming

• Fine scale feedback
• Test driven development
• Planning game
• Whole team (was Onsite customer)
• Pair programming
• Continuous process rather than batch
• Continuous Integration
• Design Improvement (was Refactor mercilessly)
• Small Releases

• Shared understanding
• Simple design
• System metaphor
• Collective code ownership
• Coding standard or Coding conventions
• Programmer welfare
• Sustainable pace (original name Forty hour week)

5
DSDM - Dynamic Systems Development Method

• Use Time boxing and MoSCoW principle
• Incremental and iterative approach
• Current and imminent needs of business are
  addressed first

6
Similarities between DSDM and XP

• Customer involvement in teams
• Frequent testing
• Incremental change
• Rapid feedback mechanisms
• Fast delivery
• Focusing on what can and should be done now
• Small teams
• Developers are expected to be multi-skilled

7
Differences between DSDM and XP
8
Differences between DSDM and XP (Cont. 1)
9
Differences between DSDM and XP (Cont. 2)
10
Differences between DSDM and XP (Cont. 3)
11
Conclusion

• DSDM and XP aim to solve the same problem
  delivering good systems in short timescales.
• XP focuses on the act of programming, which is
  treated very lightly indeed in DSDM.
• DSDM provides a controlling framework into which
  XP can be plugged.
• DSDM and XP are complementary. Combining the two
  gives a controlled framework with robust
  programming practices.

12
References

• Wikipedia Agile Software Development. 2005 Apr.
  The Wikipedia website. lthttp//en.wikipedia.org/wi
  ki/Agile_processesgt Accessed Apr 17.
• Thomas, Steven. 2005 Jan. An Agile Comparison.
  lthttp//www.balagan.org.uk/work/agile_comparison.h
  tmgt Accessed 2005 Apr 17.
• Wikipedia Extreme Programming. 2005 Apr. The
  Wikipedia website. lthttp//en.wikipedia.org/wiki/E
  xtreme_Programminggt Accessed Apr 17.
• Wikipedia Extreme Programming. 2005 Apr. The
  Wikipedia website. lthttp//en.wikipedia.org/wiki/D
  SDMgt Accessed Apr 17.
• DSDM Consortium DSDM and Extreme Programming
  (XP). 2002 Mar. The DSDM Consortium website.
  lthttp//www.dsdm.org/kss/download.asp?fileid66gt
  Accessed Apr 17.
• DSDM Consortium DSDM and Extreme Programming
  Agility With Structure. 2001. The DSDM Consortium
  website. lthttp//www.dsdm.org/timebox/newsletter3
  /dsdm_xp.aspgt Accessed Apr 17.
• CIO Variations on the Agile Theme. 2001 July.
  The CIO Magazine Website lthttp//www.cio.com/archi
  ve/070101/secret_sidebar_1.htmlgt Accessed Apr 17.
• PC Magazine DIY Programming. 1997 Mar. The PC
  Magazine Website. lthttp//www.pcmag.co.uk/features
  /22816gt Accessed Apr 17.
• Stapleton, J. (1997) DSDM, Dynamic Systems
  Development Method The Method in Practice.
  London Addison-Wesley