6650 search results - page 389 / 1330 » Mutating database queries |
157
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EDBT
2004
ACM
15 years 10 months ago
2004
ACM
Abstract. We present a cost-based adaptive clustering method to improve average performance of spatial queries (intersection, containment, enclosure queries) over large collections...
169
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VLDB
1991
ACM
15 years 9 months ago
1991
ACM
Queries in object-oriented datab;Lqcs are formulated against a class and retrieve instnnccls of the class sat,isfying a certain predicate on the att,riblltes of the class. The pre...
260
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ICDE
2005
IEEE
16 years 6 months ago
2005
IEEE
Vertical partitioning is a well-known technique for optimizing query performance in relational databases. An extreme form of this technique, which we call vectorization, is to sto...
134
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IDEAS
2000
IEEE
15 years 9 months ago
2000
IEEE
We present SECONDO, a new generic environment supporting the implementation of database systems for a wide range of data models and query languages. On the one hand, this framewor...
251
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ICDE
2007
IEEE
16 years 6 months ago
2007
IEEE
In recent years there has been a great deal of interest in developing effective techniques for ad-hoc search and retrieval in structured repositories such as relational databases ...