483 search results - page 24 / 97 » Evaluating Top-k Selection Queries |
VLDB
1997
ACM
13 years 11 months ago
1997
ACM
In this paper we describe novel techniques that make it possible to build an industrial-strength tool for automating the choice of indexes in the physical design of a SQL database...
ICDE
2005
IEEE
14 years 9 months ago
2005
IEEE
The query optimizer of a database system is confronted with two aspects when handling user-defined functions (UDFs) in query predicates: the vast differences in evaluation costs b...
EDBT
2006
ACM
14 years 7 months ago
2006
ACM
Navigational queries on Web-accessible life science sources pose unique query optimization challenges. The objects in these sources are interconnected to objects in other sources, ...
BIS
2011
12 years 7 months ago
2011
Distributed information retrieval is a well-known approach for accessing heterogeneous, highly autonomous sources of unstructured information. Selecting and querying only a number ...
CIKM
2005
Springer
14 years 1 months ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...