964 search results - page 11 / 193 » Efficiently Ordering Query Plans for Data Integration |
PVLDB
2008
14 years 9 months ago
2008
Many commercial RDBMSs employ cost-based query optimization exploiting dynamic programming (DP) to efficiently generate the optimal query execution plan. However, optimization tim...
DASFAA
2007
IEEE
15 years 1 months ago
2007
IEEE
Abstract. In this paper, we present a novel ordered XPATH evaluation in treeunaware RDBMS. The novelties of our approach lies in the followings. (a) We propose a novel XML storage ...
CIDR
2009
14 years 10 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...
FUIN
2006
14 years 9 months ago
2006
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...
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ESWS
2011
Springer
2011
Springer
Zero-Knowledge Query Planning for an Iterator Implementation of Link Traversal Based Query Execution
14 years 29 days ago
Abstract. Link traversal based query execution is a new query execution paradigm for the Web of Data. This approach allows the execution engine to discover potentially relevant dat...