Research On Stochastic Obtaining-Test System Of Test Database Based On Client/Server Structure

Obtaining-Test System of Test Database is an important composed part of CAI. It's main function, which includes test management, obtaining-tests, output, setting up type, printing and so on, can help teachers to do teaching informationization using computer. The system is important to develop teaching informationization quickly, to alleviate workload, to improve teaching efficiency, reform teaching method, strengthen test quality and so on. This paper introduces the stochastic obtaining-test system of test database based the method of OOSD and Client/Server construction and solves the key technologies.Firstly, this paper analyses the developing situation and content about teaching informationization, and advances the structure and method of system development in the present teaching condition. From system's content the paper analyses importance about obtaining test standard and does research on basic theory of the item-bank including test attribute, test condition, test measure and test-making, etc. secondly, this paper introduces and analyses some related technologies on system development, such as method of OOSD, C/S construction and so on. From above all the paper brings forward the key arithmetic on the system and does further research on optimizing arithmetic which how to obtain test quickly and safely. Thirdly, this paper also expatiate some key technologies such as saving and obtaining technologies on BLOB, OLE technologies and so on, which solve how to save and take test pictures and how to output test in word. Lastly, the paper analyses and expatiates design and realization of the system module, which include design method, structure and realizing program, etc.After running of this system, it plays an important role in terms of realizing teaching efficiency and improving test quality, etc. it can also alleviate the labor force of teachers and improve the work efficiency.