5221 search results - page 286 / 1045 » An On-line Problem Database |
198
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VLDB
2004
ACM
15 years 12 months ago
2004
ACM
Query containment is the most fundamental relationship between a pair of database queries: a query Q is said to be contained in a query Q if the answer for Q is always a subset of...
265
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PODS
2010
ACM
15 years 11 months ago
2010
ACM
Cardinality estimation is the problem of estimating the number of tuples returned by a query; it is a fundamentally important task in data management, used in query optimization, ...
237
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STOC
1998
ACM
15 years 11 months ago
1998
ACM
We address the problem of designing data structures that allow efficient search for approximate nearest neighbors. More specifically, given a database consisting of a set of vecto...
149
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VLDB
1994
ACM
15 years 10 months ago
1994
ACM
In this paper we address the problem of devising a set of indexes for a nested object hierarchy in an object-oriented database to improve the overall system performance. It is not...
188
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WEBDB
2000
Springer
15 years 10 months ago
2000
Springer
Rewriting queries using views is a powerful technique that has applications in data integration, data warehousing and query optimization. Query rewriting in relational databases i...