网上作业系统设计.pdf

摘 要

任何作业都可以由教师布置作业、学生解答作业、学生对作业提出问题、教师解答相

关问题等部分构成。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。

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“网上答疑” 、 “网上作业教师操作”和“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。本文的研究结论为网上作业系统的全面实

现奠定了坚实的理论基础与实践基础。

采用 ASP.NET 语言实现了系统的“网上答疑”子系统、“网上作业教师操作”子系统

和“网上作业学生操作”子系统的开发，并用B/S模式在互联网上实现。



关键词：网上作业、网上答疑、B/S模式

Abstract

Every homework consists of assigning work, doing the work, asking questions and answering questions.

Include paper, homework, answer, information of the students, eg. The traditional way of finishing the task

not only consumes too much resources ,but also wastes teacher's time and it is difficult to give a point fast,

save the task efficient ,so , it will influent the efficiency of the work. S o that , it is instant to develop the

relative computer information management system in order to manage the information efficiently and

scientifically.

This paper mainly research the request analysis ,concept model , logic architecture and physical design of the

web task system with relation database, software project and information management system ,e.g. By deep

research and actual experience, the author find out much necessary complex data and the relation between

them as “web answer questions”, “web task teacher operation”,” web task student operation” system are

designed in order to finish the request analysis and design the concept model . Then, the logic model of the

system is designed in terms of the rules of transforming the concept model to logic model. Finally, the

physical architecture is finished in terms of the specialty of the relation database management system. The

conclusions of this paper lay the foundation of the realization of the web task system.

The author develops the "question and answer on the internet" sub system, “work operated by teachers on the

internet” sub system, and "work operated by students on the internet” sub system using the language

"AEP.NET”, and makes it work on the internet in B/S mode.

Keyword: work on the internet, question and answer on the internet, B/S mode



目 录

摘 要............................................................................................................................................. I

1. 绪论............................................................................................................................................2

1.1 NHS研究的背景....................................................................................................................2

1.1.1 系统研究的背景............................................................................................................2

1.1.2 面向对象数据库系统....................................................................................................2

1.2 B/S体系结构..........................................................................................................................3

1.3 本文的研究内容与方法.......................................................................................................5

1.3.1 研究内容........................................................................................................................5

1.3.2 研究方法........................................................................................................................5

1.4 研究的目的及意义...............................................................................................................5

2 NHS需求分析...................................................................................................................................................... 7

2.1 NHS系统的功能需求............................................................................................................7

2.2 NHS的性能需求..................................................................................................................12

2.3 NHS的运行需求...........................