The space database construction of information system about 1∶250,000 ground water resources in Yinchuan basin
WU Xue-hua · Ningxia Engineering Technology · 2003
The building of the appraisal space data base of the groundwater re sources in Yinchuan basin is based on ' Yinchuan basin groundwater resources ap praisal' . It is the son-project of groundwater exploration project in Erduos i basin. The article discusses the critical question of space data base establis hment: the collection of the graph data; the collection of the attribute data;th e graph dramatization and graph factorizations, and provides the flow chart of b uilding the space database in the end.