Title :
GSQL-R: A query language supporting raster data
Author :
Liu, Yu ; Wang, Yinghui ; Zhang, Yi ; Lin, Xing ; Qin, Shi
Author_Institution :
Inst. of Remote Sensing & Geogr. Inf. Syst., Peking Univ., Beijing
Abstract :
Spatial database has become the dominant techniques to manage spatial data in geographical information systems, and geographic structured query language (GSQL) is the key of spatial database design and implementation. At present, GSQL for vector data has been widely studied. However, when the raster data are considered, there is little specific research. On the basis of corresponding ADTs (abstract data type), the GSQL-R is defined and the instances are described. The definition includes three parts, i.e., data definition language, data table schema and data manipulation language. The example statements of GSQL-R demonstrate that it provides a convenient way for raster data access and manipulation and supports vector data seamlessly
Keywords :
SQL; abstract data types; geographic information systems; geophysical techniques; visual databases; ADT; GSQL; GSQL-R; abstract data type; data definition language; data manipulation language; data table schema; geographic structured query language; geographical information systems; raster data; spatial database design; spatial database implementation; vector data; Calculus; Database languages; Database systems; Geographic Information Systems; Image analysis; Management information systems; Remote sensing; Shape; Spatial databases; Unified modeling language;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1370128