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PODS
1995
ACM
139views Database» more  PODS 1995»
15 years 10 months ago
Normalizing Incomplete Databases
Databases are often incomplete because of the presence of disjunctive information, due to con icts, partial knowledge and other reasons. Queries against such databases often ask q...
Leonid Libkin
SIGMOD
2007
ACM
169views Database» more  SIGMOD 2007»
16 years 6 months ago
Scalable approximate query processing with the DBO engine
This paper describes query processing in the DBO database system. Like other database systems designed for ad-hoc, analytic processing, DBO is able to compute the exact answer to ...
Christopher M. Jermaine, Subramanian Arumugam, Abh...
DASFAA
2009
IEEE
173views Database» more  DASFAA 2009»
15 years 10 months ago
A Uniform Framework for Ad-Hoc Indexes to Answer Reachability Queries on Large Graphs
Graph-structured databases and related problems such as reachability query processing have been increasingly relevant to many applications such as XML databases, biological databas...
Linhong Zhu, Byron Choi, Bingsheng He, Jeffrey Xu ...
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SIGMOD
2003
ACM
175views Database» more  SIGMOD 2003»
16 years 6 months ago
WinMagic : Subquery Elimination Using Window Aggregation
Database queries often take the form of correlated SQL queries. Correlation refers to the use of values from the outer query block to compute the inner subquery. This is a conveni...
Calisto Zuzarte, Hamid Pirahesh, Wenbin Ma, Qi Che...
ICDE
2008
IEEE
190views Database» more  ICDE 2008»
16 years 8 months ago
Adaptive Segmentation for Scientific Databases
In this paper we explore database segmentation in the context of a column-store DBMS targeted at a scientific database. We present a novel hardware- and scheme-oblivious segmentati...
Milena Ivanova, Martin L. Kersten, Niels Nes