21 search results - page 2 / 5 » Graph Structured Views and Their Incremental Maintenance |
WWW
2008
ACM
14 years 6 months ago
2008
ACM
Recent interests on XML, Semantic Web, and Web ontology, among other topics, have sparked a renewed interest on graph-structured databases. A fundamental query on graphs is the re...
ICDE
2001
IEEE
14 years 7 months ago
2001
IEEE
We consider the problems of computing aggregation queries in temporal databases, and of maintaining materialized temporal aggregate views efficiently. The latter problem is partic...
VLDB
1993
ACM
13 years 10 months ago
1993
ACM
The enforcement of semantic integrity constraints in data and knowledge bases constitutea a major performance bottleneck. Integrity constraint simplification methods aim at reduci...
DEXAW
2006
IEEE
13 years 9 months ago
2006
IEEE
When a database is defined as views over autonomous sources, inconsistencies with respect to global integrity constraints are to be expected. This paper investigates the possibili...
CAISE
2006
Springer
13 years 9 months ago
2006
Springer
Answering performance to business queries, mainly of aggregated nature, known as On-Line Analytical Processing queries, depends heavily on the proper selection of multidimensional ...