The study of urban drainage network information system space framework data standards in kunming based on GIS

Geographic data are the basis of the urban drainage network management information system, in order to ensure the consistency and validity of the data, provide reliable data sharing and exchange for the tube network information system, research of data standardization is very important and must be carried out. This article based on detected data, completing the following standardized work: 1.Divide the drainage network layer for ordering layer structure in logic; 2.Formulate the rules of data encoding for providing all the data in a standardized format; 3.Developing data attribute table, so to elaborate content rules for each type of tube wells based on unified coding; 4. At last, propose requirements of validity of the data to ensure the maintenance of the system data and new data update.