716 search results - page 53 / 144 » Optimizing Queries in Extended Relational Databases |
VLDB
1997
ACM
15 years 3 months ago
1997
ACM
Businesses today need to interrelate data stored in diverse systems with differing capabilities, ideally via a single high-level query interface. We present the design of a query ...
VLDB
2005
ACM
15 years 4 months ago
2005
ACM
Nested iteration is an important technique for query evaluation. It is the default way of executing nested subqueries in SQL. Although decorrelation often results in cheaper non-n...
137
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SIGMOD
2007
ACM
15 years 11 months ago
2007
ACM
We propose to demonstrate EaseDB, the first cache-oblivious query processor for in-memory relational query processing. The cacheoblivious notion from the theory community refers t...
132
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ICDE
2012
IEEE
13 years 1 months ago
2012
IEEE
—Many companies now routinely run massive data analysis jobs – expressed in some scripting language – on large clusters of low-end servers. Many analysis scripts are complex ...
ICDT
1995
ACM
15 years 2 months ago
1995
ACM
A tuple t1 of relation R subsumes tuple t2 of R, with respect to a query Q if for every database, tuple t1 derives all, and possibly more, answers to query Q than derived by tuple ...