Design And Realization Of Online Examination System

With the rapid development of computer technology and enlargement of its application field, especially the development of computer network and Internet, the information management and application based on computer network have gotten great development.In education, the development of the information technology improves the efficiency of the institutions and it also influences and changes the traditional teaching concept and pattern. Using network as a teaching pattern will maximize the use of existing educational resources. The traditional teaching pattern, that is "teachers-teaching-students" will restrict the time and space, nevertheless network teaching pattern will be extended to the classroom at any place.This thesis discusses the design and implementation of the online examination system technology, which with combining the requirement analysis composes the system overall structure and function module, and then to design the database structure and system. Using an object-oriented design approach to actulize a B/S three-layer structure, with ASP.NET technology and C# technology, designs an online examination system based on SQL Server-based database. This system has the following functions: user management, the role of management, test management, paper management, on-line examination, performance management, and other key functions.This thesis discuses security of the website, especially research SQL Injection attacks, sums up seven effective ways to prevent SQL Injection Attacks. The ways effectively stop the SQL Injection Attacks from different perspectives.This thesis illustrates a three-layers structure of the Web-based Online Examination System design process and discuses the system features, the advantages, shortcomings and prospect for the future.