848 search results - page 42 / 170 » Optimization of Sequence Queries in Database Systems |
IDEAS
2007
IEEE
14 years 3 months ago
2007
IEEE
In this paper we study the problem of deciding whether a regular path query over views in data-integration systems can be re-expressed without recursion. The problem becomes chall...
SSD
2001
Springer
14 years 1 months ago
2001
Springer
The design of external index structures for one- and multidimensional extended objects is a long and well studied subject in basic database research. Today, more and more commercia...
SIGMOD
2004
ACM
14 years 9 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...
SIGMOD
2009
ACM
14 years 3 months ago
2009
ACM
The state of the art commercial query optimizers employ cost-based optimization and exploit dynamic programming (DP) to find the optimal query execution plan (QEP) without evalua...
EDBTW
2004
Springer
14 years 2 months ago
2004
Springer
—Over the past few years, XML (eXtensible Mark-up Language) has emerged as the standard for information representation and data exchange over the Internet. This paper provides a ...