624 search results - page 3 / 125 » Mutant Query Plans |
BTW
2005
Springer
14 years 4 months ago
2005
Springer
: Access control is an important aspect in guaranteeing data privacy within XML data sources which are accessed by users with different access rights. The goal of predicative acces...
CIDM
2007
IEEE
14 years 5 months ago
2007
IEEE
— To generate plans for collecting data for data mining, an important problem is information volatility during planning: the information needed by the planning system may change ...
ICDE
2000
IEEE
15 years 6 days ago
2000
IEEE
In information-integration systems, sources may have diverse and limited query capabilities. In this paper we show that because sources have restrictions on retrieving their infor...
VLDB
2004
ACM
14 years 4 months ago
2004
ACM
Progressive Optimization (POP) is a technique to make query plans robust, and minimize need for DBA intervention, by repeatedly re-optimizing a query during runtime if the cardina...
JLP
2000
13 years 10 months ago
2000
Generating query-answering plans for data integration systems requires to translate a user query, formulated in terms of a mediated schema, to a query that uses relations that are...