262 search results - page 7 / 53 » Spatio-temporal join selectivity |
SSD
2001
Springer
13 years 12 months ago
2001
Springer
Several studies have focused on the efficient processing of simple spatial query types such as selections and spatial joins. Little work, however, has been done towards the optimiz...
ICDE
2003
IEEE
14 years 9 months ago
2003
IEEE
Structural join operations are central to evaluating queries against XML data, and are typically responsible for consuming a lion's share of the query processing time. Thus, ...
SIGMOD
2000
ACM
13 years 12 months ago
2000
ACM
We discovered a surprising law governing the spatial join selectivity across two sets of points. An example of such a spatial join is "find the libraries that are within 10 m...
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
Spatial database operations are typically performed in two steps. In the filtering step, indexes and the minimum bounding rectangles (MBRs) of the objects are used to quickly dete...
BNCOD
2006
13 years 9 months ago
2006
We examine the problem of producing the optimal evaluation order for queries containing joins, selections, and maps. Specifically, we look at the case where common subexpressions i...