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VLDB
2009
ACM
130views Database» more  VLDB 2009»
14 years 6 months ago
Multi-dimensional top-k dominating queries
Abstract The top-k dominating query returns k data objects which dominate the highest number of objects in a dataset. This query is an important tool for decision support since it ...
Man Lung Yiu, Nikos Mamoulis
TKDE
2002
140views more  TKDE 2002»
13 years 5 months ago
Transaction Processing in Mobile, Heterogeneous Database Systems
As technological advances are made in software and hardware, the feasibility of accessing information "any time, anywhere" is becoming a reality. Furthermore, the diversi...
James B. Lim, Ali R. Hurson
ADBIS
2004
Springer
124views Database» more  ADBIS 2004»
13 years 11 months ago
Database Caching - Towards a Cost Model for Populating Cache Groups
Web caching keeps single Web objects ready somewhere in caches in the user-to-server path, whereas database caching uses fullfledged database management systems as caches to adapt...
Theo Härder, Andreas Bühmann
ICDE
2006
IEEE
146views Database» more  ICDE 2006»
14 years 7 months ago
Query Selection Techniques for Efficient Crawling of Structured Web Sources
The high quality, structured data from Web structured sources is invaluable for many applications. Hidden Web databases are not directly crawlable by Web search engines and are on...
Ping Wu, Ji-Rong Wen, Huan Liu, Wei-Ying Ma
FOCS
1998
IEEE
13 years 10 months ago
The Complexity of Acyclic Conjunctive Queries
This paper deals with the evaluation of acyclic Boolean conjunctive queries in relational databases. By well-known results of Yannakakis [1981], this problem is solvable in polynom...
Georg Gottlob, Nicola Leone, Francesco Scarcello