Refer to conceptual materials-(I don't know what your word limit and requirements are, so you can use it as a paper. If the content is less, you can expand it in some places or add a few nouns to explain something in more detail. ) The main source of content: information system development and project management —— Chapter 9: Progress, cost and risk management of system projects. From the point of meeting the requirements of project scope, progress and cost, many projects have failed. The schedule problem is also the main cause of project conflict in the project life cycle. And schedule management is to use certain methods to analyze the activities contained in the project and their relationships, estimate the time required for each activity, and reasonably arrange and control the start and end of activities within the project time limit. For a project team, no matter who it is or what scope it belongs to, we all have a common goal: to develop high-quality products/software that meet the real needs of customers on time within the budget. Then we need to make a reasonable and effective project plan. Schedule management is an important aspect of project management. By using some basic project management tools and techniques, the project manager can coordinate the input of various resources, improve time management, and finally achieve the overall goal of the project and meet the needs of all stakeholders. Although the project delay does not necessarily represent the project failure, it will cause customer dissatisfaction and reduce the reputation and reputation of the team, so the project manager must have the concept of racing against time. Through learning, I learned that schedule management includes two parts-project schedule formulation and project schedule control. Everything in the schedule is set in advance, and it will be wasted if it is not planned. Everything should be planned and organized, so as to better achieve the final result of the project. In order to complete the project on time and perfectly, it is very necessary to make a feasible and scientific project plan before the project starts, which can provide a basis for the schedule control and the allocation of manpower and various resources in the process of project implementation, and also provide a basis for the coordinated allocation of related contents in all aspects of project implementation. In order to ensure the scientific and reasonable progress of the project, before making the progress plan, we must first collect authentic information as the basis for making the progress plan. Detailed planning generally includes the following steps: determine which specific activities are needed to complete the project, and clarify the responsibilities of each activity; Determine the sequence of completing these activities; Estimate the time and resources required for each activity; Make project plan and budget. Schedule management includes three modules: schedule planning, project critical path and schedule control. Schedule needs to include two parts: project plan and schedule arrangement. I. Work breakdown structure and responsibility matrix of the project plan (1). First of all, we must determine the objectives, expected results or final products of the project. Next, determine what work elements or activities need to be performed to complete it. Finally, the individual responsibility for completing the work breakdown structure is represented by the responsibility matrix. (2) Make a network plan. Because the work breakdown structure only generates the scope of work, and the responsibility matrix only assigns responsibilities to the generated scope of work, there is no approximation of time and resources, and the process order and association between activities are not very clear. Therefore, it must also rely on network planning technology to complete. Network planning technology is very useful in the planning, scheduling and control of projects composed of many interrelated activities. In addition, it is also very useful for information exchange about projects. Through study, there are two network planning allocation methods, namely program evaluation and review technique and critical path method. Secondly, scheduling this part of the process will help us solve the problem of time limit for each activity in project management; Determine the estimated start and completion time of each project; According to the expected start time of the project, calculate the shortest time for the start and completion of each activity; Using the completion time required by the project, calculate the time when each activity must start and the longest time to complete; Determine the positive and negative difference between the time when each activity can start (or finish) and the time when it must start (or finish); Determine the critical (longest) critical path. The critical path of the project, this part includes three parts: the importance of using critical path analysis to balance the progress, shorten the project progress and update the critical path data. The critical path of the project runs through the whole life cycle of the project and is a series of activities that determine the earliest completion of the project. Therefore, we should attach great importance to it, and we cannot ignore it or simplify it. The technology of shortening the project schedule can improve the efficiency of team work, reduce the cost of completing qualified products, and deliver the results in advance if conditions permit. The importance of updating the critical path data can better complete the project activities, reduce the error rate, and give a new estimated completion time of the project. Project schedule control. Include project control process and method. This part roughly includes four steps: analyze the progress and find out where corrective measures need to be taken; Determine the corrective measures to be taken; Modify the plan and include corrective measures in the plan; Recalculate the progress and estimate the effect of corrective measures. Through the study of project schedule management, I further understand another process of project management, and understand ...