基于C的学生作业管理系统.doc

PAGE I作业管理系统摘 要作业管理系统，是指利用计算机技术和网络技术，使作业的发布、解答、批改等工作均由一个软件系统辅助完成，达到简化流程、方便操作、节约时间、提高作业批改正确率以提高工作效率的一个系统。Operation management system could simplify the process, operation, saving time and increasing correcting accuracy by using computer technology and network technology to issue the operation, answers, corrections by the aid of a software system to improve the efficiency.任何作业都可以由教师布置作业、学生解答作业、学生提交作业、教师批改作业等部分构成。四者涉及到试题、作业、答案、学生信息、等各个方面，传统的作业方式不仅耗费大量资源；而且极易浪费教师时间、难以快速对作业评分、有效备份作业和影响工作效率。因此，急需开发相应的计算机信息管理系统对这些资料进行科学而高效的管理。 All the task can be four parts: issuing, answering, submitting and correcting. The four parts are totally related to the questions, answers, student information, etc. The traditional method is not only expending lots of resources, but also teachers will easily waste of their time, hard to quickly grade on the operation, to backup the results. Therefore, it’s urgent to develop an appropriate information management system which can manage all the data scientifically and efficiently.采用关系数据库、软件工程和管理信息系统开发等技术，重点研究网上作业系统的需 求分析、概念模型、逻辑建模和物理结构设计等方面的问题。通过深入调查和借鉴实际经验，挖掘出网上作业教师操作、网上作业管理员操作、网上作业学生操作子系统在设计时必需的大量而复杂的各种数据以及它们之间的关系，完成了系统的需求分析和概念模型设计根据概念模型向逻辑模型转换的规则完成系统的逻辑模型设计，最后根据所采用的关系数据库管理系统的特点，完成了物理结构设计。本文的研究结论为作业管理系统的全面实现奠定了坚实的理论基础与实践基础。Focus on the analysis of the needs of online operating system, conceptual model, logical model and the designing of physical structure by using the relational databases, software engineering and management information systems development and other technical. Through deep investigation and practical experience, I find out the relationships of complex data between the online operations of teachers, the online operation of manager, online subsystems of the students. I finished the analysis the relationship between the requirements of the system and conceptual model; complete the designing of logical model of the system. Finally, according to the characteristics of relational database management, the physical structure designing I