spiral life cycle model
Spiral Life Cycle Model
The spiral life cycle model is one of the oldest software development models. It is popular due to its risk-oriented feature.
- The very first step is a detailed system requirement definition. Here, the requirement is perfected to the last detail by interviewing a number of users who represent the external and/or internal users of the proposed system. The different aspects of the system are also found out in this step.
- After the system definition is made, a preliminary design is made of the proposed system. This is said to be the most important step. An analysis is carried out of all the possible as well as available alternatives to develop a cost-effective system. Along with it, the strategies to implement the alternatives are also decided upon.
- All the possible risks in the project are also identified in the same phase. The methods to resolve them are also determined immediately. In case of any risks, which point to uncertainty in the requirements, prototyping is used to make way with the available data and find out the solution to be able to deal with any potential changes, which may come about in the requirements.
- After the analysis, the first prototype is made using the preliminary design. It is not a full version, but a scaled-down version, which represents an approximation of the final product. The characteristics of the first prototype and the final version are similar to one another up to a large extent.
- The first prototype is evaluated to make the second prototype. The evaluation is made on terms of strengths, weakness, and risks. Then, the requirements for the second prototype are defined. Then comes the planning and designing of the second prototype, followed by constructing and testing of the same.
- Accordingly, the phases keep going in spirals till the entire system is ready. The bugs from the previous prototype are fixed in the next prototype.
Похожие статьи
soy sauce nutrition
Soy Sauce NutritionThis article will not only give you some important soy sauce nutrition facts, but also what to expect...
speech topics interesting topics to talk about
Speech Topics: Interesting Topics To Talk AboutInteresting topics can makes great topics to talk about. Whether it is just...
speed skating equipment list
Speed Skating Equipment ListWhat else do you need apart from skates in speed skating? Well there is a long list. Read the...
spending quality time with children tips for parents
Spending Quality Time with Children: Tips for ParentsI cannot stress enough, on how important it is for parents to spend...
standing ab exercises
Standing Ab ExercisesNot many are aware of the fact, that there are a number of standing ab exercises, which are as good...
star nosed mole facts
Star-nosed Mole FactsOne of those bizarre-looking animals, a star-nosed mole is a type of mole that is usually found in eastern...
star tattoo ideas
Star Tattoo Ideas'Tattoo' is the new hot word amongst all the youngsters today. With this latest trend taking root, let's...
step by step instructions to draw 3d letters
Step-by-step Instructions to Draw 3D LettersDo you want to make an attractive poster with your favorite quotation written...
steps to perform sanchin kata
Steps to Perform Sanchin KataAre you looking out for innovative ways to develop your physical fitness or improve your concentration...
stop smoking pill
Do Anti-smoking Pills Really Work?As people are becoming aware of smoking hazards, anti-smoking pills are gaining tremendous...
strange facts about animals
Strange Facts about AnimalsOne of the strange facts about animals that will astound you is that the tongue of a chameleon...
suggestive quotes
Suggestive QuotesIf you're looking for suggestive quotes, here are some that certainly made me laugh really hard or at least...