707 search results - page 123 / 142 » Processing queries on tree-structured data efficiently |
PVLDB
2008
13 years 8 months ago
2008
Summaries of massive data sets support approximate query processing over the original data. A basic aggregate over a set of records is the weight of subpopulations specified as a ...
SIGMOD
2009
ACM
14 years 8 months ago
2009
ACM
Column-oriented database systems [19, 23] perform better than traditional row-oriented database systems on analytical workloads such as those found in decision support and busines...
SIGMOD
2009
ACM
14 years 8 months ago
2009
ACM
SQL tuning--the attempt to improve a poorly-performing execution plan produced by the database query optimizer-is a critical aspect of database performance tuning. Ironically, as ...
VLDB
1989
ACM
14 years 20 days ago
1989
ACM
An important direction in database research for non-standard applications (e.g. engineering or design applications) deals with adequate support for complex objects. Without doubt,...
IPPS
2010
IEEE
13 years 6 months ago
2010
IEEE
Millions of DNA sequences (reads) are generated by Next Generation Sequencing machines everyday. There is a need for high performance algorithms to map these sequences to the refer...