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As the development of information technology, especially computer network and internet, the information technology based on network and database was widely used. And the model of teaching based on network also widely used. It doesn’t care about the place, time , extended classroom to every side of the society.This article discusses the significance of the examination system, application and research, and systems used in the theory of knowledge and related technology in detail, focusing on on-line examination of the design and implementation of the system, including feasibility analysis, Systems analysis, database design, system, and system debugging. Such as features assessment of the test modules, with 5 features:1.Digitalise of questions. Technical questions on the use of the library database to manage, easy to add the item to achieve and maintain, classification, retrieval and production of papers.2.Automatically generate random test. Teachers in accordance with the development of the test paper randomly generated strategy papers, the volume increased efficiency and quality.3.To preserve an effective test data. Candidates of the papers, examination results are stored in the database to facilitate the marking papers, to improve the accuracy of grading, so that the process of standardized tests.4. Enhance security control. The problems editing, revision, the paper’s inquiry, the examination results of the inquiry will require authentication. At the same time, an increase of examination failure to deal with the recovery mechanism.5. To facilitate fast. Examination of the computer system to facilitate the examination of the environment.In This thesis, the design of the on-line test systems are inter-operable, good scalability and security, and easy to maintain, etc., to meet the current demand for on-line examination.
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