243 search results - page 12 / 49 » A Heuristics-Based Approach to Query Optimization in Structu... |
215
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ICDE
2004
IEEE
16 years 1 months ago
2004
IEEE
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...
90
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VLDB
1987
ACM
15 years 3 months ago
1987
ACM
A Datalog program can be translated into a system of fixpoint equations of relational algebra; this paper studies how such a system can be solved and optimized for a particular qu...
97
Voted
WEBDB
2004
Springer
15 years 5 months ago
2004
Springer
On the Web, there is a pervasive use of XML to give lightweight semantics to textual collections. Such documentcentric XML collections require a query language that can gracefully...
109
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DBISP2P
2003
Springer
15 years 5 months ago
2003
Springer
Databases have employed a schema-based approach to store and retrieve structured data for decades. For peer-to-peer (P2P) networks, similar approaches are just beginning to emerge,...
117
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ER
2005
Springer
15 years 5 months ago
2005
Springer
Query rewriting is a fundamental task in query optimization and data integration. With the advent of the web, there has been renewed interest in data integration, where data is dis...