期刊名称：International Journal of Data Mining & Knowledge Management Process
印刷版ISSN：2231-007X
电子版ISSN：2230-9608
出版年度：2013
卷号：3
期号：6
DOI：10.5121/ijdkp.2013.3604
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：With the rapid development in Geographic Information Systems (GISs) and their applications, more and more geo-graphical databases have been developed by different vendors. However, data integration and accessing is still a big problem for the development of GIS applications as no interoperability exists among different spatial databases. In this paper we propose a unified approach for spatial data query. The paper describes a framework for integrating information from repositories containing different vector data sets formats and repositories containing raster datasets. The presented approach converts different vector data formats into a single unified format (File Geo-Database "GDB"). In addition, we employ "metadata" to support a wide range of users' queries to retrieve relevant geographic information from heterogeneous and distributed repositories. Such an employment enhances both query processing and performance
关键词：Spatial data interoperability; GIS; Geo-Spatial Metadata; Spatial Data Infrastructure; Geo-database
