This is the type of software process model in software engineering that takes all the fundamental process activities of specification, development, validation and evolution and represents them as a separate process stages.And by the process stages it means all the requirement specification, software design, implementation and testing and so on. As we can see the figure below for the waterfall model, it clearly explains a lot about the software development life cycle. And as defined by the tasks, it is also known as ‘software life cycle’. It is a good example of plan-driven process, as everything that we do is only after planning and scheduling. The main stage directly reflects the essential development activities.
Based on the principle, every phase in this model is documented out and need to be approved for the next phase. One cannot start working on the next phase until and unless the documents of previous model is approved out. It is like this process involves the feedback from one phase to another. Documenting helps to monitor the problem and progress. This model is adopted only when the requirements are well understood and does not need to be changed during the development phases.
“The prospects to the German economy are gradually improving. Forward-looking symptoms point to a potentialy conclusion to the particular weak phase,” the report said.
“The low point on the global economic susceptibleness appears to be by now past,” the
ministry added, noting also that the juncture on the
many countries financial markets had additionally
calmed considerably.
Broadly speaking, the German economy has weathered
the eurouncesne debt crisis better than many of its neighbours.
However with a enormous part of its all-important exports going to
fellow eurouncene international locations, Germany has not
been immune to the turbulence and gross domestic product expanded by a
mere 0.7 percent last year after THREE.0 percent in 2011.