995 search results - page 68 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
130
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SIGMOD
2003
ACM
16 years 2 months ago
2003
ACM
Modern database systems provide not only powerful data models but also complex query languages supporting powerful features such as the ability to create new database objects and ...
123
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COOPIS
2004
IEEE
15 years 5 months ago
2004
IEEE
Abstract. We consider the use of a cluster system for managing autonomous databases. In order to improve the performance of read-only queries, we strive to exploit user requirement...
135
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SSDBM
2002
IEEE
15 years 6 months ago
2002
IEEE
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description...
112
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TOOLS
1999
IEEE
15 years 6 months ago
1999
IEEE
Path traversals have been recognized as one of the strengths of object-oriented query processing as object retrieval can be carried out through pointer navigation. Apart from path...
136
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CIDR
2011
14 years 5 months ago
2011
Amazon’s Mechanical Turk (“MTurk”) service allows users to post short tasks (“HITs”) that other users can receive a small amount of money for completing. Common tasks on...