（）analysis emphasizes the drawing of pictorial system models to document andvalidate both existing and/or proposed systems. Ultimately, the system models become the（）for designing and constructing an improved system. （）is such a technique. Theemphasis in this technique is process-centered. Systems analysts draw a series of processmodels called （）. （）is another such technique that integrates data and processconcerns into constructs called objects.

（）analysis emphasizes the drawing of pictorial system models to document andvalidate both existing and/or proposed systems

A．Prototyping

B．Accelerated

C．Model-driven

D．Iterative