168 search results - page 2 / 34 » Efficient Creation of Statistics over Query Expressions |
SIGMOD
2002
ACM
14 years 5 months ago
2002
ACM
Statistics play an important role in influencing the plans produced by a query optimizer. Traditionally, optimizers use statistics built over base tables and assume independence b...
HICSS
2005
IEEE
13 years 10 months ago
2005
IEEE
It is demonstrated how to provide a peer-to-peer system that supports an expressive query language while maintaining efficient distribution over a wide-area network. The key is to...
SIGMOD
2004
ACM
14 years 5 months ago
2004
ACM
Cardinality estimation during query optimization relies on simplifying assumptions that usually do not hold in practice. To diminish the impact of inaccurate estimates during opti...
EDBT
2002
ACM
14 years 5 months ago
2002
ACM
Abstract. The success of Internet applications has led to an explosive growth in the demand for bandwidth from ISPs. Managing an IP network requires collecting and analyzing networ...
ENTCS
2002
13 years 5 months ago
2002
Abstract. We present an extension to linear-time temporal logic (LTL) that combines the temporal specification with the collection of statistical data. By collecting statistics ove...