293 search results - page 53 / 59 » Efficiently Querying Relational Databases Using OWL and SWRL |
SIGMOD
1996
ACM
15 years 3 months ago
1996
ACM
Magic sets rewriting is a well-known optimization heuristic for complex decision-support queries. There can be many variants of this rewriting even for a single query, which diffe...
99
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TKDE
1998
14 years 11 months ago
1998
—When a multidatabase system contains textual database systems (i.e., information retrieval systems), queries against the global schema of the multidatabase system may contain a ...
187
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ICDE
2008
IEEE
16 years 29 days ago
2008
IEEE
Network data models are frequently used as a mechanism to describe the connectivity between spatial features in many emerging GIS applications (location-based services, transporta...
101
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PODS
2004
ACM
15 years 11 months ago
2004
ACM
Several studies have demonstrated the effectiveness of the wavelet decomposition as a tool for reducing large amounts of data down to compact wavelet synopses that can be used to ...
SSD
2001
Springer
15 years 4 months ago
2001
Springer
Like people who casually assess similarity between spatial scenes in their routine activities, users of pictorial databases are often interested in retrieving scenes that are simil...