304 search results - page 28 / 61 » Selectivity Estimation of Window Queries |
SIGMOD
1999
ACM
14 years 2 days ago
1999
ACM
Pre-computation and materialization of views with aggregate functions is a common technique in Data Warehouses. Due to the complex structure of the warehouse and the different pro...
CIDR
2009
13 years 9 months ago
2009
In database query processing, actual run-time conditions (e.g., actual selectivities and actual available memory) very often differ from compile-time expectations of run-time cond...
EDBT
2011
ACM
12 years 11 months ago
2011
ACM
A question that database administrators (DBAs) routinely need to answer is how long a batch query workload will take to complete. This question arises, for example, while planning...
GLOBECOM
2009
IEEE
14 years 2 months ago
2009
IEEE
— In this paper, we study the anonymous cardinality estimation problem in radio frequency identification (RFID) systems. To preserve privacy and anonymity, each tag only transmi...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
XML structural joins, which evaluate the containment (ancestor-descendant) relationships between XML elements, are important operations of XML query processing. Estimating structu...