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SDLC

 
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Here's a neat idea from Laurent Bossavit. Go to Google, select images, and search on "SDLC". There are some very scary pictures out there!
 
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Interesting. The wikipedia image looks a lot like the v-model...
 
Stan James
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I spotted several variations on the V model in the search, one of them was exactly the image on Wikipedia. I didn't think the left always matched the right very well ... requirements -> operational test? The V model seems to defer some important testing until very late, which sounds painfully familiar.
[ August 14, 2005: Message edited by: Stan James ]
 
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It seems that V model is the modern one, I have seen all SDLC pictures are cycle and chain. Does the concept remain the same for V model comparing with the traditional one such as cycle?
 
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If I've understood the V model correctly, the original idea was not that the "V" would map directly to a timeline. In practice, of course, people have thought "analyse-design-code-test" and claimed they're following the V model.

Can anyone confirm/correct me on that?
 
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The V model has been around for a long time, and frankly it's just another way to depict a serial, waterfall approach.

The W model extends the V model to basically indicate that you can organize a project into a series of (potentially overlapping) small waterfalls which develop the system incrementally.

The V/W models, not to be mistaken with Volkswagons , seem to be fairly popular within the US DoD community. Those folks have a fairly horrendous track record when it comes to software development, so does it really make sense that we follow their advice?

In the end, you need to find a process that works well for your situation. The only way that you can do that is by understanding a range of them. You might find Choose the Right Software Method for the Job to be interesting.

- Scott
 
Ilja Preuss
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Originally posted by Scott Ambler:

The V/W models, not to be mistaken with Volkswagons , seem to be fairly popular within the US DoD community. Those folks have a fairly horrendous track record when it comes to software development, so does it really make sense that we follow their advice?



The v-model is the official model of the german government. They even invested some million euros to modernize it - it's now called v-model XT (extreme tailoring :rolleyes .

The track record of german government projects isn't very good either, of course...
 
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