Accelerated analysis approaches emphasize the construction of （） to more rapidly identify business and user requirements for a new system. As an accelerated analysis technology,（） reads the program code and automatically generates the equivalent system model, and the code can be obtained from （） . All system analysis approaches require some form of （） which includes those techniques to be used to identify or extract system problems and solution requirements from user community. （） is a classical set of techniques used to collect information about system problems, opportunities, solution requirements, and priorities.

（）reads the program code and automatically generates the equivalent system model