848 search results - page 18 / 170 » Optimization of Sequence Queries in Database Systems |
SSDBM
2008
IEEE
15 years 3 months ago
2008
IEEE
Increasingly, many data sources appear as online databases, hidden behind query forms, thus forming what is referred to as the deep web. It is desirable to have systems that can pr...
ADBIS
2004
Springer
15 years 2 months ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
DBISP2P
2003
Springer
15 years 2 months ago
2003
Springer
Databases have employed a schema-based approach to store and retrieve structured data for decades. For peer-to-peer (P2P) networks, similar approaches are just beginning to emerge,...
ICDE
2009
IEEE
15 years 4 months ago
2009
IEEE
— A paramount challenge in probabilistic databases is the scalable computation of confidences of tuples in query results. This paper introduces an efficient secondary-storage o...
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ICDE
2008
IEEE
15 years 11 months ago
2008
IEEE
The typical workload in a database system consists of a mixture of multiple queries of different types, running concurrently and interacting with each other. Hence, optimizing perf...