205 search results - page 38 / 41 » Optimizing Multiple Top-K Queries over Joins |
EDBT
2008
ACM
14 years 7 months ago
2008
ACM
Enterprises may have multiple database systems spread across the organization for redundancy or for serving different applications. In such systems, query workloads can be distrib...
CIKM
2009
Springer
14 years 2 months ago
2009
Springer
Despite the widespread use of BM25, there have been few studies examining its effectiveness on a document description over single and multiple field combinations. We determine t...
PDIS
1994
IEEE
13 years 11 months ago
1994
IEEE
We propose a new client-side data-caching scheme for relational databases with a central server and multiple clients. Data are loaded into each client cache based on queries execut...
SIGMOD
1996
ACM
13 years 11 months ago
1996
ACM
We investigate the problem of incremental maintenance of an SQL view in the face of database updates, and show that it is possible to reduce the total time cost of view maintenanc...
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
Two trends are converging to make the CPU cost of a table scan a more important component of database performance. First, table scans are becoming a larger fraction of the query p...