client programs
3.The thesis, by the integration of Powerbuilder and Mapinfo, mainly inserts remote sense vector data of crop land,woodland,waters,grassland,barren land,barren land cultivated in FengShou irrigation area and GIS vector data of village and town district division,trench system network,water gate, depth to groundwater table in FengShou irrigation area into client programs programed, realizing the application of remote sense vector data and GIS vector data in water resoures management of FengShou irrigation area in Awati County, realizing the integrated management of the texts and maps of the water resources survey data, and some spatial analysis and map edit functions of MapInfo as well.
7.This paper has analyses the Linux ONC RPC mechanism in detail,which includes implementation flow, XDR conversion, important RPC library functions, CLIENT handle and SVCXPRT handle, RPC security authentication. It also illustrates a Linux ONC RPC programs implementation in general.
9.The management information system strictly follows the design principle of security, economy, efficiency reliability, and easy operating, maintaining and expanding, and adopts a combining topological structure and Client/Server mode, using Windows NT 4.0 as the operation platform, MS SQL 7.0 as the DBMS, and Power Builder 8.0 as the developing tool of its application programs.

