|
| Work phase | The key issue | Main mission |
|
| Definition and plan | What is the question? | Determine the outline of the system plan; survey tasks for the transportation requirements; make preparations for the survey |
| Feasibility study | Is there a feasible solution? | Provide expert opinions and suggestions |
| Demand analysis | What must the system do? | Understand the artificial system model; determine user needs; order current business flow and data flow; collect original business data, analyze demand survey results, and make design preparations |
| Outline design | How to solve the problem? | Determine system design principles and goals, carry out system control structure design, software function structure design, database design, operating environment design and interface design; determine system implementation plan |
| Detailed design | How to implement the system concretely? | Familiar with the basic development platform software; determine the module function and the calling relationship between the modules; determine the module interface; give the module control mix diagram 1 gives the software guide and user input and output interface |
| Program code | How to design the correct program unit? | According to detailed design results and programming guidelines, the functions of each caution block are realized with code |
| Test inheritance | How to ensure that the software meets the requirements? | Install and develop the application system on-site, and conduct anti-image debugging through simulation operation; meanwhile, conduct system use training for business personnel at all levels of the planning bureau |
| Operation and maintenance | How to make the system persistently meet the requirements? | The system enters the formal operation stage, during which system identification is completed; operation and maintenance are carried out |
|
