716 search results - page 54 / 144 » Optimizing Queries in Extended Relational Databases |
133
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SDB
1995
15 years 2 months ago
1995
Most of work on partial information in databases asks which operations of standard languages, like relational algebra, can still be performed correctly in the presence of nulls. In...
159
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SIGMOD
2009
ACM
15 years 11 months ago
2009
ACM
Database outsourcing requires that a query server constructs a proof of result correctness, which can be verified by the client using the data owner's signature. Previous aut...
155
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SIGMOD
2006
ACM
15 years 11 months ago
2006
ACM
Consider an XML view defined over a relational database, and a user query specified over this view. This user XML query is typically processed using the following steps: (a) our t...
171
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ICDE
1995
IEEE
16 years 18 days ago
1995
IEEE
The model of flexible relations supports heterogeneous sets of tuples in a strongly typed way. The elegance of the standard relational model is preserved by using a single, generi...
104
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SSDBM
2003
IEEE
15 years 4 months ago
2003
IEEE
Relational index structures, as for instance the Relational Interval Tree, the Relational R-Tree, or the Linear Quadtree, support efficient processing of queries on top of existin...