A New Way to Query GISs on the Web

BMS organizes information in abstract name spaces and lets users refer to thedatathroughtheirvalues,whileaspatialDBMSorganizesinformationinconcrete 2D geometric spaces and lets users designate spatial relationships to retrieve data. A simple example, “Find all farms adjacent to Kruger Park,” illustrates how spatial queries rely on implicit information: “Adjacent”is not a stored attribute or relation but an implicit result of spatial analysis. Serena Coetzee and Judith Bishop, University of Pretoria A New Way to Query GISs on the Web We created a distributed open spatial query mechanism that gives users access to cross-platform, cross-vendor geographic information systems via the Internet. A Java implementation provides maximum flexibility for Web-based clients. Q . 

• Type: Journal
• Year: 1998
• Where: SOFTWARE
• Authors: Serena Coetzee, Judith Bishop
• Keywords: Applied Computing, Open Spatial Query, SOFTWARE 1998, Spatial, Spatial Relationships