Design And Study Of The Channel Geographic Information Data Base

Channel geographic information is the base of channel management and building, which is key to build channel informatization. Channel geographic information data base for channel management is designed based on analysis of daily work in channel department and feature of channel data. The chief content is as flows.The paper obtains data base's function, goals, designed principle, frame and network structure, by analysis of users. The software platform is make sure by analyzing the main SDE's and DBMS's software.Their advantage and structure are analyzed, and then feature of data is linked. So it is make sure that Geodatabase data medal express basal geographic information and Hydro data medal do hydrology data. Finally modeling method is fully discussed.The paper finish building channel geographic information data base, through demand analysis, conceptual design, logic design, physical design, data base model building and a series of step.Through Guangxi channel geographic information system is realized, the design of data base is correct and the theory is realizable. Finally, the paper discuss data import, conformity control, quality control, data base defend and update.