2063 search results - page 10 / 413 » Containment of Aggregate Queries |
CADE
2012
Springer
11 years 9 months ago
2012
Springer
The problem of SPARQL query containment is defined as determining if the result of one query is included in the result of another for any RDF graph. Query containment is important...
VLDB
2011
ACM
13 years 2 months ago
2011
ACM
Schema mappings are high-level specifications that describe the relationship between two database schemas. They are an important tool in several areas of database research, notab...
PVLDB
2010
13 years 5 months ago
2010
Virtual views are a mechanism that facilitates re-use and makes queries easier to express. However the use of iterative view definitions makes very simple query evaluation and an...
LCPC
2009
Springer
14 years 1 days ago
2009
Springer
Classic loop unrolling allows to increase the performance of sequential loops by reducing the overheads of the non-computational parts of the loop. Unfortunately, when the loop con...
SIGMOD
2001
ACM
14 years 7 months ago
2001
ACM
Virtually all proposals for querying XML include a class of query we term "containment queries". It is also clear that in the foreseeable future, a substantial amount of...