115 search results - page 3 / 23 » Predicate Migration: Optimizing Queries with Expensive Predi... |
SIGMOD
2003
ACM
14 years 5 months ago
2003
ACM
Decision-support applications generate queries with complex predicates. We show how the factorization of complex query expressions exposes significant opportunities for exploiting...
ICDE
2006
IEEE
13 years 11 months ago
2006
IEEE
The window query model is widely used in data stream management systems where the focus of a continuous query is limited to a set of the most recent tuples. In this dissertation, ...
BNCOD
2011
12 years 5 months ago
2011
Due to high data volumes and unpredictable arrival rates, continuous query systems processing expensive queries in real-time may fail to keep up with the input data streams - resul...
SIGMOD
2003
ACM
14 years 5 months ago
2003
ACM
We consider the problem of evaluating large numbers of XPath filters, each with many predicates, on a stream of XML documents. The solution we propose is to lazily construct a sin...
ICDE
2002
IEEE
14 years 6 months ago
2002
IEEE
Modern relational database systems are beginning to support ad hoc queries on mining models. In this paper, we explore novel techniques for optimizing queries that apply mining mo...