978 search results - page 5 / 196 » Xyleme Query Architecture |
DPD
2002
13 years 7 months ago
2002
The mediator-wrapper approach to integrate data from heterogeneous data sources has usually been centralized in the sense that a single mediator system is placed between a number o...
GIS
2002
ACM
13 years 7 months ago
2002
ACM
Geographical information systems are more and more based on a DBMS with spatial extensions, which is also the case for the system described in this paper. The design and implementa...
VLDB
2002
ACM
13 years 7 months ago
2002
ACM
Data warehouses offer a compromise between freshness of data and query evaluation times. However, a fixed preference ratio between these two variables is too undifferentiated. Wit...
SIGIR
2008
ACM
13 years 5 months ago
2008
ACM
Results caching is an efficient technique for reducing the query processing load, hence it is commonly used in real search engines. This technique, however, bounds the maximum hit...
DEBS
2011
ACM
2011
ACM
DejaVu: a complex event processing system for pattern matching over live and historical data streams
12 years 11 months ago
This short paper provides an overview of the DejaVu complex event processing (CEP) system, with an emphasis on its novel architecture and query optimization techniques for correla...