6846 search results - page 170 / 1370 » Querying a summary of database |
294
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ICDE
2002
IEEE
16 years 7 months ago
2002
IEEE
We study the problem of query optimization in federated relational database systems. The nature of federated databases explicitly decouples many aspects of the optimization proces...
109
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VLDB
2004
ACM
15 years 11 months ago
2004
ACM
Query processing in database systems has developed beyond mere exact matching of attribute values. Scoring database objects and retrieving only the top k matches or Pareto-optimal...
270
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SIGMOD
2009
ACM
16 years 6 months ago
2009
ACM
In this paper, we study a novel form of continuous nearest neighbor queries in the presence of obstacles, namely continuous obstructed nearest neighbor (CONN) search. It considers...
138
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VLDB
2004
ACM
15 years 11 months ago
2004
ACM
In this short paper we present the coDB P2P DB system. A network of databases, possibly with different schemas, are interconnected by means of GLAV coordination rules, which are ...
185
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SLE
2009
Springer
16 years 29 days ago
2009
Springer
One of the most ubiquitous elements of modern computing is the relational database. Very few modern applications are created without some sort of database backend. Unfortunately, r...