995 search results - page 134 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
109
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ICDT
2007
ACM
15 years 8 months ago
2007
ACM
Abstract. In many cases, users may want to consider incomplete answers to their queries. Often, however, there is an overwhelming number of such answers, even if subsumed answers a...
211
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PODS
2009
ACM
16 years 2 months ago
2009
ACM
For many years, finite model theory was viewed as the backbone of database theory, and database theory in turn supplied finite model theory with key motivations and problems. By n...
112
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SSDBM
2003
IEEE
15 years 7 months ago
2003
IEEE
MoBIoS is a specialized database management system whose storage manager is based on metric-space indexing, and whose query language entails biological data types. When relational...
130
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CBMS
2006
IEEE
15 years 8 months ago
2006
IEEE
— Most biomedical research databases contain considerable amounts of time-oriented data. However, temporal knowledge about the contextual meaning of such data is not usually repr...
SIGMOD
2002
ACM
16 years 2 months ago
2002
ACM
Spatial indexing has been one of the active focus areas in recent database research. Several variants of Quadtree and R-tree indexes have been proposed in database literature. In ...