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Understanding Software Development Life Cycle
The document discusses the software development life cycle (SDLC), emphasizing its importance in improving project quality and productivity while avoiding budget overruns. It outlines various methodologies, including waterfall, spiral, and agile models, highlighting their unique features and suitable applications. Ultimately, the text suggests that a combination of methodologies may be necessary, with agile approaches becoming increasingly popular in modern software development.
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Understanding Software Development Life Cycle
- 1. .............................................................................................................. Understanding Software Development Life Cycle ..............................................................................................................
- 2. Internet Addict for11+ Years... Karthik Kastury 24x7 Internet Geek | Unlucky in Cards B.E. Information Science Engineer / Hacker / Blogger / Apple fanboi and evil minded. *Pun Intended* ................................................................................................................................ Blog http://karthik.kastury.in/ Email hello@karthik.kastury.in Twitter @KarthikDot ................................................................................................................................
- 3. .............................................................................................................. “ Nine people can’t make a baby in a month’s time. ” - FRED BROOKS ..............................................................................................................
- 4. .............................................................................................................. WHAT? ..............................................................................................................
- 5. .............................................................................................................. Modern Software Development ‣ Software development is no longer a run of the mill activity. ‣ There is a process that accompanies the development of every software. ‣ Software Development Life Cycle is a collection of best practices and methodologies. ..............................................................................................................
- 6. .............................................................................................................. It isn’t Hard! ..............................................................................................................
- 7. .............................................................................................................. GOALS ..............................................................................................................
- 8. .............................................................................................................. Why Understand SDLC? ‣ Without a accepted process and methodology it is very easy to deliver the project late or over budget. ‣ It helps you improve the quality of your work and improve your productivity while doing so. ‣ Clients will love you. No Seriously! ..............................................................................................................
- 9. .............................................................................................................. ACTIVITIES ..............................................................................................................
- 10. .............................................................................................................. What goes on in SDLC? ‣ Modern Software development is no longer an activity that you can perform all by yourself. ‣ Multiple teams of designers, testers, developers team up to give you the “wow” experience. ‣ Today’s software systems can sometimes take many years before they are shipped. ..............................................................................................................
- 11. .............................................................................................................. PLANNING ..............................................................................................................
- 12. .............................................................................................................. DESIGN ..............................................................................................................
- 13.
- 14. .............................................................................................................. TESTING ..............................................................................................................
- 15.
- 16.
- 17.
- 18.
- 19. .............................................................................................................. MODELS ..............................................................................................................
- 20. .............................................................................................................. “ Before software can be reusable, it first has to be usable. - RALPH JOHNSON ” ..............................................................................................................
- 21. .............................................................................................................. WATERFALL ..............................................................................................................
- 22. .............................................................................................................. Waterfall Model ‣ One of the most commonly used models. ‣ Every step has to be fully complete, before moving on to another. ‣ A review is done, if needed to integrate a more formal review process. ..............................................................................................................
- 23. .............................................................................................................. SPIRAL ..............................................................................................................
- 24. .............................................................................................................. SpiralModel ‣ Spiral Model incorporates risk analysis at every stage. ‣ More flexible than waterfall and borrows features from agile models. ‣ Suitable for large scale systems, due to the costs of repeated risk analysis. ..............................................................................................................
- 25. .............................................................................................................. AGILE ..............................................................................................................
- 26. .............................................................................................................. Agile Model ‣ Uses feedback rather than planning. ‣ Build early, Gather feedback and iterate. ‣ Lower the cost of change. ‣ Small teams to minimize communication friction. ..............................................................................................................
- 27. .............................................................................................................. MAGIC BOX ..............................................................................................................
- 28. .............................................................................................................. Magic Box Model ‣ A Variation of the Agile model of Software development. ‣ Popular in developing web applications. ‣ Developers work on their own codebase, reducing friction and increases programmer productivity. ‣ Ensures rapid development and quick delivery. ..............................................................................................................
- 29.
- 30. .............................................................................................................. Final Words... ‣ There’s no one methodology that just works for your project, many a time you’ll need a combination. ‣ Agile methodologies are rapidly gaining acceptance in programming circles worldwide, replacing traditional Waterfall and Spiral approaches. ..............................................................................................................
- 31. .............................................................................................................. DEVELOPMENT CAN BEFUN! ..............................................................................................................
- 32. .............................................................................................................. IMPOSSIBLE ISNOTHING ..............................................................................................................
- 33. .............................................................................................................. LIVE ONTHE EDGE ..............................................................................................................
- 34. I’m available tohelp ................................................................................................................................ Blog http://karthik.kastury.in/ Email hello@karthik.kastury.in Twitter @KarthikDot Ask http://karthik.kastury.in/ask ................................................................................................................................
- 35. .............................................................................................................. THE END Or the start of something new. ..............................................................................................................
Editor's Notes
- #2 \n
- #3 Yawn. SDLC seriously? I promise you won’t be bored.\n
- #4 I tend to have a poor sense of humor, or so I’ve been told. \nSo please excuse me if I crack lame jokes!\n
- #5 If only making babies was so easy ;)\n
- #6 \n
- #7 Software development mostly is disorganized. You need to fix it. Here’s how.\n
- #8 Oh trust me it isn’t hard. And you’ll have fun doing it.\n
- #9 \n
- #10 Productivity and Programmer Happiness seem to be the buzzwords today. Following a good SDLC process will actually make it happen. For real!\n
- #11 What happens in the development of software? The various little activities that add up to give you the most awesome experience?\n
- #12 \n
- #13 Planning has been a part of every single thing that man has ever done. That’s why it’s there in Software too. At this stage the developer understands the clients requirements, and puts them down in all black and white. \n\nIt is the defacto reference document going forward. \n
- #14 Once the requirements have been understood, its time to do get your creative juices flowing. Use Case Diagrams(Yawn!), Interface Diagrams, Wireframes, Copy etc...\n
- #15 Put on the Coding Ninja hat on, and type away code as fast as you can. The one stage that can break or make things. \n
- #16 Make sure your code is bulletproof. Test it extensively, make sure you close the tiniest of the bugs.\n
- #17 Oooh. Shiny new servers. Push your code to the production machines and wait for the magic to unfold.\n
- #18 Accept it. Most things in this world break. So does software. You need to fix them as that happens. Not so interesting I think. But then you gotta make it idiot proof.\n
- #19 Maybe tomorrow you’re gonna quit your job, get fired maybe. The next guy shouldn’t be challenged to read your code. Document everything. \n
- #20 \n
- #21 Some of the Commonly followed Software Development Models.\n
- #22 \n
- #23 \n
- #24 \n
- #25 \n
- #26 \n
- #27 \n
- #28 \n
- #29 \n
- #30 \n
- #31 \n
- #32 \n
- #33 \n
- #34 \n
- #35 \n
- #36 The world of software development is all set for an exciting 2011. There’s a lot happening, and most are to make you a happier, better programmer. \n
- #37 \n
- #38 Follow Blogs, Follow Trends on Twitter. The world of software development is changing fast, and you need to stay ahead of the curve, or else, you are dead.\n
- #39 I usually try to reply to emails within 2 days, but if I don’t please don’t curse me to death. \n\nAnd I welcome any kind of feedback, from sharp criticism to of course showering of flowers. \n
- #40 Thank you. Go out and build something awesome!\n