227 search results - page 25 / 46 » Ranking-based processing of SQL queries |
SIGMOD
2010
ACM
14 years 2 months ago
2010
ACM
In this paper, we propose an online aggregation system called COSMOS (Continuous Sampling for Multiple queries in an Online aggregation System), to process multiple aggregate quer...
SIGMOD
2007
ACM
14 years 10 months ago
2007
ACM
Good cardinality estimates are critical for generating good execution plans during query optimization. Complex predicates, correlations between columns, and user-defined functions...
SIGMOD
2002
ACM
14 years 10 months ago
2002
ACM
Physical database design is important for query performance in a shared-nothing parallel database system, in which data is horizontally partitioned among multiple independent node...
SIGMOD
2011
ACM
13 years 20 days ago
2011
ACM
Table partitioning splits a table into smaller parts that can be accessed, stored, and maintained independent of one another. From their traditional use in improving query perform...
EDBT
2010
ACM
13 years 12 months ago
2010
ACM
Keyword-based search in relational databases allows users to discover relevant information without knowing the database schema or using complicated queries. However, such searches...