Developing test database and online examination system with ASP (2)

II. operating environment and system structure

This application is widely available on the Internet, the Internet, and the internal LAN. Its operational requirements and logical structure are as follows:

Client: Windows95/98,internet Explorer (IE)

Server-side: Windows nt/windows2000,internet Information Server (IIS) 4.0 and above, ie, or windows98,personal Web server (PWS), ie, and so on.

DB: SQL Server, running on the server side.


The logical structure diagram of test questions database and online examination system

Third, the system characteristics

The system is integrated, the interface is neat and beautiful, the operation is simple and convenient. In addition, the system is supported by the right to operate, that is, different types of users have different permissions on the question bank to carry out various operations. Mainly in the first page through two different ways to enter the interface of the difference, to ensure that the entire database of data security and integrity. Its main characteristics are embodied in the following three aspects:

(1) Independent design database ⑵ Independent call database ⑶ Autonomous Management database

Independent design database refers to the user can create a new subject database according to their own needs (that is, the system realizes the function of automatic table building), so that the database truly becomes the user's own database. However, as long as the account name and table name already exist in the library, will not be rebuilt, so as to ensure the unity of the data; The independent call database allows users to freely extract questions from the database composition of the test paper, there are several big questions and small questions and whether to provide view answers are set by the user and the topic. Generally speaking, a high-quality test paper, users need to hashed, comparison and pondering, the user is like into the supermarket to buy things as easy to take out the fancy, but also can go back to the unwanted return, and in the formation of a complete test paper, allow the order of the arbitrary adjustment of the question. In the group volume, you can also select a number of test papers or the same knowledge points of the test, but is prohibited a set of papers in the same knowledge points (like) and difficult to agree with the test questions. However, the biggest flaw lies in the fact that only the objective part of the paper is realized, including judgment, radio and multiple-choice. Moreover, the objective problem and the real multimedia test paper have not been realized. Autonomous management database means that the general user has the power to add, modify and retrieve data, and realize the extensibility and openness of the database. While the administrator has the power to delete data, so as to achieve the system data uniformity and consistency of purpose, see the system demo.