Research On Water Environment Infor Mation Database Management System Of Harbin Section Of Songhua River Based On GIS

Songhua River runoff is long, flows through the area is wide, is one of the most important rivers in the northeast region of china. Because the runoff of Songhua River is long, it is managed by subsection management mode. But because the Songhua River basin water environment is involved in a wide area, water environment management departments and industry. Currently Songhua River water environmental governance although have used the information technology to carry on the analysis, but departments of water environment governance related data dispersed in each sector management, lack of a unified management tool to implement the sharing and management of the water environment governance related data, resulting in Harbin section of Songhua River water environment information distributed storage in business or government departments. When people need the water environment data of Songhua River in Harbin section of water environment analysis or in the government, had to face the need to collect relevant data from the enterprise or the individual departments, greatly reduces the water environment information management efficiency, even because of decentralized data lead to inconsistent information of water environment in the various departments.In order to solve this problem, this paper based on GIS technology were the Songhua River in Harbin section of water environment information database management system construction, using the method of software engineering in the Songhua River in Harbin section of water environment information database management system research, through construction of a section of the Songhua River in Harbin respectively information environment and the database management system, will present various paper water environment information and document internal water environment information, GIS data type water environment information input to the management information system to achieve the unified management of the Harbin section of Songhua River water environment information.First, determine the system to meet the specific functional requirements, through the analysis of the problems existing in Harbin section of Songhua River water environment management, formulate the overall goal of the Songhua River in Harbin section of water environment information database management system, and through the analysis of the demand for water environment information database management system on the Songhua River water environment governance related to agricultural production, industrial production and other polluting industries and water conservancy, environmental protection and other water environmental regulators, to determine specific functions of the Songhua River in Harbin section of water environment information database management system to meet the required.Secondly, in determining the sewage enterprises and government departments of Harbin section of Songhua River water environment information database management system requirements, the overall system structure and function structure design, from the point of view of the whole, the Songhua River in Harbin section of water environment information database management system by B / s three layer structure mode, the client layer for the user to provide a graphical interface, convenient user management information of water environment system; business logic layer to the user through the customer layer submitted by users of water environment information management request is processed, and the handling of the results returned to the client tier display to the customer; data layer main storage management of water environment information. In the structure and function of the system, according to the needs of different users on the system function, all the features of the system of dividing the structure of the data input subsystem, data maintenance, the three major functional modules of the subsystem and platform management subsystem and the system storage water environment information database management system data table structure design.Again, the Arc GIS platform of ArcSDE and Oracle relational database management system jointly established the spatial database to the information of spatial data storage in Harbin section of Songhua River water environment database, using ArcGIS ArcEngine tool and. Net technology of the Songhua River in Harbin section of water environment information database management system in water environment information query, water environment information application specific code realization of.Finally, by combination of black box testing and white box testing method of Harbin section of Songhua River water environment information database management system testing, test results show that, the Songhua River in Harbin section of water environment information database management system can meet the requirement of the system analysis of the demand of user of the system in the process of to the goal of system design, can realize centralized management and water environment information sharing of the Songhua River Basin water environment management information in the process of the water environmental information needs.