2223 search results - page 239 / 445 » Query Optimization in an OODBMS |
160
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WWW
2008
ACM
16 years 5 months ago
2008
ACM
Efficiently querying RDF [1] data is being an important factor in applying Semantic Web technologies to real-world applications. In this context, many efforts have been made to st...
218
Voted
SIGMOD
2009
ACM
16 years 4 months ago
2009
ACM
Reachability queries on large directed graphs have attracted much attention recently. The existing work either uses spanning structures, such as chains or trees, to compress the c...
153
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SIGMOD
2002
ACM
16 years 4 months ago
2002
ACM
The widespread distribution and availability of smallscale sensors, actuators, and embedded processors is transforming the physical world into a computing platform. One such examp...
133
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EDBT
2008
ACM
16 years 4 months ago
2008
ACM
Enterprises may have multiple database systems spread across the organization for redundancy or for serving different applications. In such systems, query workloads can be distrib...
114
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VLDB
1999
ACM
15 years 8 months ago
1999
ACM
This paper aims to improve the accuracy of query result-size estimations in query optimizers by leveraging the dynamic feedback obtained from observations on the executed query wo...