116 search results - page 4 / 24 » Estimating Compilation Time of a Query Optimizer |
ICS
2003
Tsinghua U.
14 years 1 months ago
2003
Tsinghua U.
Cache behavior modeling is an important part of modern optimizing compilers. In this paper we present a method to estimate the number of cache misses, at compile time, using a mac...
VLDB
2001
ACM
14 years 9 days ago
2001
ACM
Most modern DBMS optimizers rely upon a cost model to choose the best query execution plan (QEP) for any given query. Cost estimates are heavily dependent upon the optimizer’s e...
AMW
2010
13 years 9 months ago
2010
In this work we present in-network techniques to improve the efficiency of spatial aggregate queries. Such queries are very common in a sensornet setting, demanding more targeted t...
EDBT
2006
ACM
14 years 8 months ago
2006
ACM
In this paper we present a novel approach for estimating the selectivity of XML twig queries. Such a technique is useful for approximate query answering as well as for determining...
SIGMOD
2002
ACM
14 years 8 months ago
2002
ACM
Relational query optimizers have traditionally relied upon table cardinalities when estimating the cost of the query plans they consider. While this approach has been and continue...