Research And Development Of The Applied Internet System And The Quality Monitoring System To Underground Fluids

The management of underground fluid is based on observational data. These data are from all local seismic bureaus. All information needs to be translated, restored and processed, in order to provide seismologists with service. Today the technology of large flourish distributed database has provided a modern solution program for lots of information, which is a good method to obtain basic data for seismologists. This thesis is focused on the study on a series of techniques about SQL Server database web application development in the research and development of the web project management system. These techniques are very useful to information share for earthquake prevention and disaster mitigation.The first thing is to receive data automaticallyThe seismic precursory data of underground fluids include digital observed data and simulative observed data. The receiving measures for these data are database replication and email receiving. The receiving schema of digital observed data is by establishing connection with provincial bureau precursory database, and the Microsoft SQL Server provides republish solution to realize this target automatically. For the receiving schema of simulative observed data, our center has developed an email system to receive data and to write data on database automatically. The email system can read and search information that users need. These technologies can work efficiently, and relief people from hard work. In addition, using database to restore information makes it possible and convenient to save and to use lots of data, so that researchers can concentrate themselves on the study of seism data.The second technology of website: Windows DNA, COMWindows DNA is used to make Active papers. The web site is composed of presentation layer, workflow layer, logical layer and data access layer. Workflow Layer can caches infrequently changing data as XML/HTML. It transforms data from ADO 2.1 disconnected record sets to XML. It stores user context data as XML in a location-independent manner. Business Logic Layer revises interfaces optimized for scalability. Data Access layer is a SQL Server ODBC driver, ADO 2.1, and MTSmanages ADO/ODBC connections. Credibility can be obtained and all components and application programs are made to get to a standard, and embody variety in a wider range. The operations of getting and restoring data use procedure, which makes it convenient to maintain the website.In addition COM technology is used to realize dynamic chart. Chart schema has realized present fluid data dynamically and directly perceived through the senses using chart. Using Visual Basic 6 a server-side component is developed as an ActiveX Dll. The component will wrap the charting capabilities of MS Excel that exposes them to the VB/ASP developer/user of the component in a very simple way to use fashion. The chart would be generated on the server using MS Excel and then is exported to a simple GIF file at the desired location on the server.The third thing is to develop a quality monitoring systemThe quality monitoring system of the underground fluid premonitory database is aimed to observe data's integrality and immanent quality. The used molder is client/server. Client is used to provide interface for users to access data on server. Server is charge of disposing requisition. When time is up, the client begins to transmit parameter to the server, and then the server begins to carry out appointed storage process and to write the result to appointed table. The client application program uses Delphi5.5 to develop the storage process and the view on server uses Transact-SQL of SQL server 7.0 to develop.