| This system is designed to suit the need of all kinds of examination for exam and exercise on line. The system can carry out the management of warehouse for test paper, automatic and manual paper organization, test and practice on line, automatic assessment and so on. The intelligent paper organization will use the genetic algorithms based on artificial intelligence principles. The system not only carry out intelligentize and decrease chanciness and randomicity, but also can meet the user need of distributed account.The system is based on B/S model—a three tier model of Browser/Web Server/Database Server derived from traditional C/S model. Only a browser instead of a test application program is needed to be installed in client machine. Development environment is separated from application environment to improve the scalability, security and reusability. The change to the database structure can not influence client so that the efficiency of system maintenance can be improved. The operating system in server machine is Windows XP and it has features such as good security, stable function and easy management. Microsoft Office Access 2003 is used as database development platform and it has features such as convenient use, good scalability,high level of integration with relative software. ASP technology is adopted to design user interface and it has features such as high portable feature, high efficiency of code execution and convenient connection with database .The system provides good security in the fashion of four-tier authorized system including top administrator, generic administrator teacher and student. The administrator is responsible for the system maintenance and can do manipulation with the system such as adding or deleting content in the test question database. Teacher is responsible for managing test question database, producing test papers, evaluating test integratedly and so on. Examinees can use the test system to do test and query grade. |
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