1000 search results - page 75 / 200 » Provenance for Aggregate Queries |
SSDBM
2009
IEEE
14 years 4 months ago
2009
IEEE
Scientific experiments produce large volumes of data represented as complex objects that describe independent events such as particle collisions. Scientific analyses can be express...
MOBIQUITOUS
2005
IEEE
14 years 3 months ago
2005
IEEE
Recent research has led to the advent of software systems capable of performing query processing in sensor networks. They perform query processing in a sensor network by construct...
DAWAK
2003
Springer
14 years 3 months ago
2003
Springer
Abstract. Many SQL queries with aggregated subqueries exhibit redundancy (overlap in FROM and WHERE clauses). We propose a method, called the for-loop, to optimize such queries by ...
DBPL
1999
Springer
14 years 2 months ago
1999
Springer
We consider IES(SQL), the incremental evaluation system over an SQL-like language with grouping, arithmetics, and aggregation. We show that every second order query is in IES(SQL) ...
SIGMOD
2008
ACM
14 years 10 months ago
2008
ACM
Today's enterprise databases are large and complex, often relating hundreds of entities. Enabling ordinary users to query such databases and derive value from them has been o...