193 search results - page 7 / 39 » Processing and Optimization of Complex Queries in Schema-Bas... |
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
We present BLAS , a Bi-LAbeling based System, for efficiently processing complex XPath queries over XML data. BLAS uses Plabeling to process queries involving consecutive child ax...
SSD
2001
Springer
14 years 4 days ago
2001
Springer
Several studies have focused on the efficient processing of simple spatial query types such as selections and spatial joins. Little work, however, has been done towards the optimiz...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
Virtually every commercial query optimizer chooses the best plan for a query using a cost model that relies heavily on accurate cardinality estimation. Cardinality estimation erro...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
We consider the problem of query optimization in distributed stream based systems where multiple continuous queries may be executing simultaneously. In such systems, distribution ...
EDBT
2004
ACM
14 years 7 months ago
2004
ACM
We study the problem of answering queries over sources with limited access patterns. The problem is to decide whether a given query Q is feasible, i.e., equivalent to an executable...