1. Spiral Model :
Spiral Model is a software development life cycle model which is highly used for risk driven models. Based on the risk patterns of a given project, the spiral model helps developers to increase the efficiency of model as most risk already handled. It consist of number of loops which are forming a spiral shape where each loop is called phase of software development cycle.
2. Incremental Model :
Incremental Model is a model of software development where the product is, analyzed, designed, implemented and tested incrementally until the product is finished. Multiple development cycles take place and these cycles are divided into more smaller modules. Generally a working software in incremental model is produced during first module Each subsequent release of the module adds function to the previous release. In incremental model, process continues till the complete system is achieved.
Difference between Spiral model and Incremental model :
|S.No.||Spiral Model||Incremental Model|
|1.||Spiral model is a software development model and is made with features of incremental, waterfall or evolutionary prototyping models.||Incremental Model is a software development model where the product is, analyzed, designed, implemented and tested incrementally until the product is finished.|
|2.||In spiral model requirements and early stage planning is also necessary.||In incremental model requirements and early stage planning is necessary.|
|3.||Flexibility to change in spiral model is not that difficult.||Flexibility to change in incremental model is Easy.|
|4.||There is low amount risk in spiral model.||There is also low amount risk in incremental model.|
|5.||While cost of spiral model is very expensive.||Cost of incremental model is also Low.|
|6.||Spiral model can handle large project.||Incremental model can’t handle large project.|
|7.||In spiral model overlapping of phases is not possible.||In incremental model overlapping of phases is possible.|
|8.||Testing is done in spiral model at the end of the engineering phase.||Testing is done in incremental model after every iteration of phase.|
|9.||Returning to previous stage/phase in spiral model is possible.||Returning to previous stage/phase in incremental model is possible.|
|10.||In spiral model large team is required.||In incremental model large team is not required.|
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- Difference between RAD Model and Waterfall Model
- Difference between Agile Model and V-Model
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