712 search results - page 14 / 143 » Decoupled Query Optimization for Federated Database Systems |
100
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DKE
2006
15 years 1 months ago
2006
Recursive queries are quite important in the context of XML databases. In addition, several recent papers have investigated a relational approach to store XML data and there is gr...
113
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VLDB
1987
ACM
15 years 5 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...
132
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SIGMOD
2001
ACM
16 years 2 months ago
2001
ACM
Virtually all proposals for querying XML include a class of query we term "containment queries". It is also clear that in the foreseeable future, a substantial amount of...
113
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ICDE
2007
IEEE
15 years 8 months ago
2007
IEEE
Various techniques have been developed for different query types in content-based image retrieval (CBIR) systems such as sampling queries, constrained sampling queries, multiple c...
242
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ICDE
2003
IEEE
16 years 3 months ago
2003
IEEE
The XML Wrapper is a new feature of the federated database capabilities of DB2/UDB v8. It enables users and applications to issue SQL queries against XML data from a variety of so...