Application of OLAP to Distance Hydrological Measuring System of Taihu Lake Basin

The data of historical rainfall and water level,and the relationship between the water level and rainfall of Taihu Lake are discussed,and a new method of online analysis process(OLAP)in decision-making analysis is put forward.The principle of OLAP is introduced,and the construction of the elements of OLAP,the revelation of the data and analysis results are expatiated with an example.According to reliable basic data and data analysis,the relationship of the data is educed by this method.This method can be popularized in such areas as hydrological measuring,water quality measuring,meteorologic monitoring,etc.