2063 search results - page 25 / 413 » Containment of Aggregate Queries |
FQAS
2009
Springer
14 years 4 months ago
2009
Springer
Abstract. Controlled languages (CLs) are ambiguity-free subsets of natural languages such as English offering a good trade-off between the formal rigor of ontology and query langua...
EDBT
2002
ACM
14 years 10 months ago
2002
ACM
Abstract. Aggregate window queries return summarized information about objects that fall inside a query rectangle (e.g., the number of objects instead of their concrete ids). Tradi...
SSDBM
2010
IEEE
13 years 7 months ago
2010
IEEE
Graphs are prevailingly used in many applications to model complex data structures. In this paper, we study the problem of supergraph containment search. To avoid the NP-complete s...
ICDT
2009
ACM
14 years 10 months ago
2009
ACM
Graph-theoretic aggregation problems have been considered both in OLAP (grid graph) and XML (tree). This paper gives new results for MIN aggregation in a tree, where we want the M...
DAWAK
2003
Springer
14 years 3 months ago
2003
Springer
We introduce a new method for optimization of SQL queries with nested subqueries. The method is based on the idea of Boolean aggregates, aggregates that compute the conjunction or ...