Function Dependence Algorithm Based on Water Census Data
Qian Zhen-xin · Computer and Modernization · 2014
Conditional Functional Dependencies( CFDs) can be made extensive use of data inconsistency and data cleaning. In order to check the consistency of water conservancy survey data,this paper,according to the characteristics of the data,divided the data into two parts,including measurement and dimensions,and clustered the measurement data,imported the concept of Conditional Functional Dependencies( CFDs),redefined the Conditional Functional Dependencies,improved CTANE algorithm which finds the functional dependencies; taking reservoir engineering data for example,this paper verified that the improved algorithm could accurately find the Conditional Functional Dependencies of water conservancy survey data,which is good for the detection of data consistency.