The Database System Of Agriculture, Resources, Environment, Ecology In Northwest China

The Database System of Agriculture, Resources, Environment, Ecology in Northwest China is based on the network technique as the method of delivering information, according to the standards of the National Bureau of Statistics published, information from central government, local governments and their sub departments, which is a management, inquire, communication and share system of data and literature materials made by multimedia technique, aiming for providing accurate and timely data for the environment of the recovering and rebuilding, the successful strategy of the agricultural structure adjustment and the macro research.1. The actuality of the data management system and its' development trendThe data processing methods have already experienced three phases: manual period, machine stage and electronics stage. The compute invention is a symbol that mankind began to storage data and manage data by the machine language. It is a sign of technique leap from the document management system to database management system, until the database system was integrated into the personal computer in 1980s, the database technique has been gained widespread use. In the past 30 years, the database system has already developed the no relational model, the next generation Object-Relational Database System (ORDBS), the third generation Object Oriented database system (OODBS) .In the 1990s later, for the speed of the Internet technique, the website base based on the Internet promoted the information resource share.2. The way of design and technique support in the systemIt is one of purposes of the system to manage the data efficiently, sorting and classifying the data by agriculture, resource, ecology and environment, storage them in the different documents. Secondly, the system has already realized the data share through the Internet Explore. Thirdly, the system realizes the data processing on-line, customs can gain information timely what they need by the mathematic analysis tool integrated into itself.The material can be divided two types according to the their text form, one isdata, and the other is literatures. The former recorded the agriculture development and environment construction in Northwest China, later also depicted the same events happened there with the different form. According as its content, the data has been classified four first classes: agriculture, resource, ecology and environment 21 second classes and 132 third classes.According to classify of the system, the system have four first classes cod: 1-agriculture; 2-resource; 3-environment; 4-ecology, then second class code and the third class code.3. The design of the share system and applicationThe system is provided with the function of management, service and assistance. The system management function includes keeping the system safe, renewing the system and the customers' guide; the system service function includes the data query and processing; the system assistant including compress, encryption and so on.The Database System of Agriculture, Resources, Environment, Ecology in Northwest China gather many aspects' data involved the agriculture, resource, environment and ecology, which can provide with accurate and enough data timely and also offer a good tool to manage material.