429 search results - page 67 / 86 » A SAT approach to query optimization in mediator systems |
SIGMOD
2009
ACM
14 years 9 months ago
2009
ACM
SQL tuning--the attempt to improve a poorly-performing execution plan produced by the database query optimizer-is a critical aspect of database performance tuning. Ironically, as ...
EPIA
2005
Springer
14 years 2 months ago
2005
Springer
Abstract. This paper describes an approach for the integration of linguistic information in passage retrieval in an open-source question answering system for Dutch. Annotation prod...
VLDB
2007
ACM
14 years 9 months ago
2007
ACM
In distributed stream processing environments, large numbers of continuous queries are distributed onto multiple servers. When one or more of these servers become overloaded due t...
VLDB
2002
ACM
13 years 8 months ago
2002
ACM
Accurate prediction of operator execution time is a prerequisite for database query optimization. Although extensively studied for conventional disk-based DBMSs, cost modeling in ...
RECOMB
2009
Springer
14 years 9 months ago
2009
Springer
In analyzing the proteome using mass spectrometry, the mass values help identify the molecules, and the intensities help quantify them, relative to their abundance in other sample...