Main shortcomings of traditional development methods

(1) Advantages: Starting from the whole system, it emphasizes the "top-down" analysis and design under the overall optimization condition, which ensures the integrity of the system and the consistency of goals; Follow the principle of customer first; Strictly distinguish the stages of system development; The results of each stage are the foundation of the next stage, which is convenient for the management and control of system development; Document standardization, establish standardized documents according to engineering standards.

(2) Disadvantages: user quality or communication problems between system analysts and managers; The development cycle is long and it is difficult to adapt to environmental changes; For the system with low structure level, it is difficult to lock the functional requirements at the early stage of development.