771 search results - page 3 / 155 » Access Methods and Query Processing Techniques |
PVLDB
2010
13 years 5 months ago
2010
We consider the problem of efficiently finding the top-k answers for join queries over web-accessible databases. Classical algorithms for finding top-k answers use branch-and-b...
ICDE
2007
IEEE
14 years 8 months ago
2007
IEEE
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...
TKDE
2010
13 years 5 months ago
2010
—The increasing availability of location-aware mobile devices has given rise to a flurry of location-based services (LBS). Due to the nature of spatial queries, an LBS needs the...
CIKM
2004
Springer
14 years 23 days ago
2004
Springer
Peer-to-peer Data Networks (PDNs) are large-scale, selforganizing, distributed query processing systems. Familiar examples of PDN are peer-to-peer file-sharing networks, which su...
VLDB
2005
ACM
14 years 26 days ago
2005
ACM
With the increasing occurrence of temporal and spatial data in present-day database applications, the interval data type is adopted by more and more database systems. For an effic...