In this paper, two models of Internet database accessing:the two layer model and the three layer model are studied and compared.

VB6.0 applied technique with network database in hospital;

The design of scientific research information structure in network database;

The Application of Web-based Network Database in Material Handling Infor mation System;

The security of net database has received more and more attention.

To meet the challenge of the knowledge economic time,this article mainil discuses the necessity and possibility of undertaking agricultural product marketing under net database,the main function of net database in agricultural product marketing,and the mode,character,manner and way of using net database in agricultural product marketing,and so on.

Through the comparison among some usual technologies used to query and display information in network database, a novel method is put forward for query information using XML technology.

The system integrates Data Collecting Tech-nology、Communication Technology、Database Technology etc, and apply a Control Method based on B/S module to control the data co.

An improved visual network platform of Argo database is systematically introduced, including its constitution,function and application of the platform to help large numbers of Argo data users know it better, and also facilitate Argo data s application process.