Application of three-tired structure technology in WebGIS
Zhong Tao · 2002
In order to find a plan to build the GIS that is suitable for civil aviation transportation, several current building plans for GIS and the characteristics of WebGIS were introduced and compared with each other. Three main methods for WebGIS building were analyzed. It is decided to take the three tired structure client/server model as the fundamental frame of the civil aviation transportation geographic information system(CATGIS). The three tired structure model was described. This model is realized in CATGIS. Through the practice, though the system has some disadvantages, but its advantages, such as less maintenance, simpler operation, lower requirement for users and easier allocation of loads, make it be an ideal scheme for building CATGIS, which meets the needs of civil aviation transportation. 3 figs, 6 refs.