Download or read book Towards SQL Database Language Extensions for Geographic Information Systems written by Vincent B. Robinson and published by DIANE Publishing. This book was released on 1998-04 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapters: on heterogeneous GIS, architectures, spatial data models, transactions & database languages; database language SQL: emerging features for GIS applications; proposed spatial data handling extensions to SQL; a GIS perspective on spatial & object oriented extensions to SQL; conceptual folding & unfolding of spatial data for spatial queries. Illustrated.