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» Decoupled Query Optimization for Federated Database Systems
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ICDE
2008
IEEE
127views Database» more  ICDE 2008»
15 years 11 months ago
Optimizing SQL Queries over Text Databases
Text documents often embed data that is structured in nature, and we can expose this structured data using information extraction technology. By processing a text database with inf...
Alpa Jain, AnHai Doan, Luis Gravano
SEBD
1996
94views Database» more  SEBD 1996»
14 years 10 months ago
Efficient Algorithm for determining the Optimal Execution Strategy for Path Queries in OODBS
Abstract. To select an optimal query evaluation strategy for a path query in an object-oriented database system one has to exploit the available index structures on the path. In a ...
Weimin Chen, Karl Aberer
SIGMOD
1994
ACM
99views Database» more  SIGMOD 1994»
15 years 1 months ago
Optimizing Queries on Files
We present a framework which allows the user to access and manipulate data uniformly, regardless of whether it resides in a database or in the file system (or in both). A key issu...
Mariano P. Consens, Tova Milo
ICDE
2011
IEEE
273views Database» more  ICDE 2011»
14 years 1 months ago
Shortcut selection in RDF databases
—An increasing amount of data produced nowadays is in RDF format. While significant work has been performed on view selection and query optimization algorithms in relational dat...
Vicky Dritsou, Panos Constantopoulos, Antonios Del...
COOPIS
2003
IEEE
15 years 2 months ago
Ontology Based Query Processing in Database Management Systems
The use of semantic knowledge in its various forms has become an important aspect in managing data in database and information systems. In the form of integrity constraints, it ha...
Chokri Ben Necib, Johann Christoph Freytag