Design And Implementation Of Online Examination System Based On QT

The traditional paper-based examination mode,from paper-based examination to paper-based examination,the workload of teachers is huge;secondly,the way of artificial paper-based examination is often prone to miscalculation,human factors are large,which brings uncertainty to the work of paper-based examination;thirdly,artificial paper-based examination is easy to cause one-sided test questions and lack of pertinence.At last,manual marking is not conducive to the analysis and statistics of the results.Aiming at the problems existing in the current training examination,this paper makes the following research:(1)Qt platform is the current mainstream software development platform.Based on the technology of QT platform,this paper develops a set of online examination system which can realize automatic test paper judgment and Score statistical analysis;(2)in the design of software function,the basic information management,question bank information management,test paper management,account management and other functional modules are designed;(3)according to the test paper formation,the paper gives a variety of paper formation modes,such as free paper formation,random paper formation,etc;(4)in the performance statistics and analysis module,the histogram and pie chart respectively show the performance distribution and statistics of the system.The implementation process is divided into data generation,chart construction and icon display.This paper mainly uses QT and SQL as the main development tools,the system database is designed by SQL,through the investigation of the key elements(roles,operations,permissions)and processes in the examination system,so as to build the data model of the examination system and the data association relationship between them.In the development process of the system,the software technology based on C / S architecture is adopted,which has the characteristics of stable operation,safety,high efficiency and good interaction performance.After the system goes online and runs,it has been repaired and updated many times.At present,the system runs stably and can completely replace the traditionalexamination mode and solve some problems in the current examination.Through the study of online examination system,enterprise employees and managers can test their learning effect in time,find their own shortcomings,and improve their learning efficiency.In the online examination system,the generation of questions,the submission of examination papers,and the marking of scores can be completed automatically on the network.As long as a set of mature question bank is formed,the automation of examination can be realized.In this way,all the teachers have to do is to design the questions carefully and maintain the question bank,rather than organize the examination,which greatly reduces the burden of teachers,saves costs for enterprises,and plays an important role in improving work efficiency.