推荐回答(2个)
The waterfall model (waterfall model) advantage is provided for the project by stages division checkpoint, defect in project between stages for rarely has feedback.
Iterative model (the RUP) a bit is to accelerate the whole development work schedule. Because developers the focal place of the clear, their job more efficient, defect is time-consuming, development
Compared with both, iterations, and the biggest difference of the waterfall is that risk exposure time. Due to the waterfall model features (document is main body), a lot of problems in the final will be exposed. The waterfall model with traditional compared, the iterative process has the following advantages: because the user's needs and not made at the outset the definition of completely, they are generally in the subsequent stages in the continuous specification. Therefore, the iterative process, this pattern that adapt to the change of demand will be easier. And because the software increasingly complex, could not one-time can complete the software, and can be used iterative development RUP to better cope with change, make software practice more complete.
The advantage of waterfall model is it supplies phased test points for the item and the disadvantage is there is less feed back among the phases of the item.
The advantage of RUP is accelerating the process of the total development.Since the developers know which is the focus, they will work more effectively. The disadvantage is development time consuming.
By comparsion, we found that the biggest difference between waterfall and RUP is the emerge time of risk.because of the character of waterfall model, most of the problems will emerge at last phase.Compare with the traditional waterfall model, RUP has the advantages as follows:
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