964 search results - page 27 / 193 » Efficiently Ordering Query Plans for Data Integration |
139
click to vote
KDD
1998
ACM
15 years 8 months ago
1998
ACM
This paper presents the PLANMINE sequence mining algorithm to extract patterns of events that predict failures in databases of plan executions. New techniques were needed because ...
235
click to vote
ICDE
1999
IEEE
16 years 5 months ago
1999
IEEE
Range sum queries on data cubes are a powerful tool for analysis. A range sum query applies an aggregation operation (e.g., SUM) over all selected cells in a data cube, where the ...
114
click to vote
AAAI
1997
15 years 5 months ago
1997
We consider the problem of query plan optimization in information brokers. Information brokers are programs that facilitate access to collections of information sources by hiding ...
212
click to vote
VLDB
2006
ACM
16 years 4 months ago
2006
ACM
For querying structured and semistructured data, data retrieval and document retrieval are two valuable and complementary techniques that have not yet been fully integrated. In thi...
156
click to vote
EDBT
2008
ACM
16 years 4 months ago
2008
ACM
Scientific data are available through an increasing number of heterogeneous, independently evolving, sources. Although the sources themselves are independently evolving, the data ...