The Storage Technology for GIS Data Realization
The format of space data used in Geographic Information System (GIS) is different currently, therefore, exchange the GIS data among different GIS applications is not very convenient. In order to solve the problems, the authors take three methods. Firstly, the storage format of the shape document series (shp, shx and dbf) is analyzed. Secondly, they study the technologies and methods of changing the shape document into XML file. Exchanging the format between the shape document and the XML file is realized. Thirdly, the methods of storing GIS spatial data as XML in DB2 9 are studied by using the extension function for XML in RDBMS, a data access middleware is designed and implemented to realize storing the GIS spatial data in DB2 9 as XML.