Internet-based Online Marking System Design And Realization

Presently, the importance of the deepening of the educational reforms and the whole-scale improvement of the holistic education is noticed and stressed in almost every field. Examinations of all kinds to assess the quality of the talents are progressively focusing on the test of the creativity and capability of the candidates in the exam. As far as the assessing standards are concerned, the subjective questions in the exam enjoy more superiority than the objective ones. Errors in correcting the subjective questions, however, are hard to avoid; meanwhile, if unsuitably handled, the justness of the exam will inevitably be affected.In the past few years, the development of computer technology, network technology, image process technology is exerting far-reaching influence on the educational examination. Scoring on network, a completely new kind, comes forth to avoid the errors in the correction of the subjective questions and therefore realize the justness and fairness.The thesis illustrates the working principles of the scoring on network and analyzes and compares its current situations. The paper concludes with the scheme of the scoring system based on Internet, which not only diminishes the errors in the paper correction and improves the efficiency in the later stage of the work, but also makes the teachers' working time and space more flexible.The paper consists of the following main parts:?It presents the systematic design based on the distributed multi-tier architecture. It offers the integrated design such as system framework, function module and database structure.(2) With the involved security requirement, the thesis analyzes the current technology relative to the information security and brings forward a set of security solution suitable for scoring on network system: as for the authentication of scoring teacher, it advise the fingerprint authentication; as for the secure transmission of information, it borrows the mature mechanism of SSL encrypt communication.(3) With the demand of stability and reliability, the thesis brings forward an application server design scheme based on MIDAS technology, with the capability of error-tolerance and load-balance. It also represents system operation logic and the optimization of database connection mechanism.This thesis is based on a project called scoring on network system experiment with Shanghai characteristic, administrated by Shanghai Municipal Educational Examinations Authority. I participated in the system design of the whole project and completed the design and the realization of the security module, application server operation logic module and system performance optimization.