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VLDB
1991
ACM
13 years 11 months ago
1991
ACM
We present a priority system which is particularly suited for production rules coupled to databases. In this system, there are default priorities between all rules and overriding ...
WWW
2008
ACM
14 years 8 months ago
2008
ACM
In this paper, we formalize the problem of Basic Graph Pattern (BGP) optimization for SPARQL queries and main memory graph implementations of RDF data. We define and analyze the c...
MOBIDE
2003
ACM
14 years 29 days ago
2003
ACM
This paper presents TiNA, a scheme for minimizing energy consumption in sensor networks by exploiting end-user tolerance to temporal coherency. TiNA utilizes temporal coherency to...
SIGMOD
2001
ACM
14 years 7 months ago
2001
ACM
As XML has developed over the past few years, its role has expanded beyond its original domain as a semantics-preserving markup language for online documents, and it is now also t...
SIGMOD
2009
ACM
14 years 2 months ago
2009
ACM
Column-stores gained popularity as a promising physical design alternative. Each attribute of a relation is physically stored as a separate column allowing queries to load only th...