Nuclear Facilities, Environmental Monitoring Database Technology Research

The database management system for environment inspect is a whole database management system based on the general concept of relation-database, and creat seamless connect with graphics interface, data maintenance, and data management. It provides customers a powerful tool with friendly interface. The embedding of database technique, GIS and developing technique is the key innovative and difficult points.Leveraging powerful database support from SQL Server produced by Microsoft Corporation, the prophasic design is precisely analysed through the database tool PowerDesigner. Taking the inspect points as objects, the system creats a graphic display of geographic points around 401. The related graphic operation functions make it possible for users to get more inspectin informations. The general information management system not only provides information input, maintenance, query, report output but also sample simulative data, real-time observation, over-time alarm, database input and statistical reports export. Thus, the combination of these three technologies puts up a complete and effective platform.The system relates to many ActiveX controls. The technology of background database accumulation, the synchronization and transfer of the data management is based on ADO control. And meanwhile, the embedded GIS control MapX makes map interface management efficient. The integration of these two controls plays an important role in relation between map data and attribut data: BlindLayer object as a parameter, the table is turned into a DataSet; creat a new layer in the map, and express the datas as graphic objects. So the geometric datas are related to the attribute datas efficiently.The system simulates inspect data generators, and provide many functions such as sampling, real-time inspect, over-time alarm, data input and statistical reports export with the combination of all kinds of controls in Visual Basic situation. The flexible use of SELECT sentence of T-SQL enhances the efficiency in respect data statistics and provides users the maximum, minimum, average, etc. as a mass of datas are classified.As people pay more and more attention to the environment, the database managementsystem for environment inspect will become one of the most important tools. At the same time, we should pay further attention in future since higher requirement will be proposed along with the development of the inspect technology and the programming technology..