SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Random sampling is one of the most fundamental data management tools available. However, most current research involving sampling considers the problem of how to use a sample, and...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
An effective query optimizer finds a query plan that exploits the characteristics of the source data. In data integration, little is known in advance about sources' propertie...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Database selection is an important step when searching over large numbers of distributed text databases. The database selection task relies on statistical summaries of the databas...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Ranking is an important property that needs to be fully supported by current relational query engines. Recently, several rank-join query operators have been proposed based on rank...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
The rich dependency structure found in the columns of real-world relational databases can be exploited to great advantage, but can also cause query optimizers--which usually assum...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Despite the widespread and growing use of asynchronous copies to improve scalability, performance and availability, this practice still lacks a firm semantic foundation. Applicati...