39 search results - page 5 / 8 » Top-k selection queries over relational databases: Mapping s... |
SAC
2006
ACM
14 years 27 days ago
2006
ACM
Structured data and complex schemas are becoming the main way to represent the information many Digital Libraries provide, thus impacting the services they offer. When searching i...
SIGMOD
2001
ACM
14 years 7 months ago
2001
ACM
Over the last decades, improvements in CPU speed have outpaced improvements in main memory and disk access rates by orders of magnitude, enabling the use of data compression techn...
EDBT
2009
ACM
14 years 1 months ago
2009
ACM
Materialized views (MV) can significantly improve the query performance of relational databases. In this paper, we consider MVs to optimize complex scenarios where many heterogen...
CIKM
2005
Springer
14 years 15 days ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Relational XQuery systems try to re-use mature relational data management infrastructures to create fast and scalable XML database technology. This paper describes the main featur...