250 search results - page 30 / 50 » ConEx: a system for monitoring queries |
VLDB
2001
ACM
13 years 12 months ago
2001
ACM
Most modern DBMS optimizers rely upon a cost model to choose the best query execution plan (QEP) for any given query. Cost estimates are heavily dependent upon the optimizer’s e...
UIST
1995
ACM
13 years 11 months ago
1995
ACM
We describe the Informediatm News-on-Demand system. News-on-Demand is an innovative example of indexing and searching broadcast video and audio material by text content. The fully...
ICFP
2009
ACM
14 years 8 months ago
2009
ACM
During the life cycle of an XML application, both schemas and queries may change from one version to another. Schema evolutions may affect query results and potentially the validi...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
Dynamic plan migration is concerned with the on-the-fly transition from one continuous query plan to a semantically equivalent yet more efficient plan. Migration is important for ...
EDBT
2008
ACM
14 years 7 months ago
2008
ACM
Abstract. Monitoring aggregates on IP traffic data streams is a compelling application for data stream management systems. Often, such streaming aggregation queries involve joining...