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» A Scalable Algorithm for Answering Queries Using Views
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WEBDB
2000
Springer
136views Database» more  WEBDB 2000»
13 years 11 months ago
An Optimization Technique for Answering Regular Path Queries
Rewriting queries using views is a powerful technique that has applications in data integration, data warehousing and query optimization. Query rewriting in relational databases i...
Gösta Grahne, Alex Thomo
VLDB
2007
ACM
121views Database» more  VLDB 2007»
14 years 7 months ago
Efficient Keyword Search over Virtual XML Views
Emerging applications such as personalized portals, enterprise search and web integration systems often require keyword search over semi-structured views. However, traditional inf...
Feng Shao, Lin Guo, Chavdar Botev, Anand Bhaskar, ...
SIGMOD
1996
ACM
120views Database» more  SIGMOD 1996»
13 years 11 months ago
Implementing Data Cubes Efficiently
Decision support applications involve complex queries on very large databases. Since response times should be small, query optimization is critical. Users typically view the data ...
Venky Harinarayan, Anand Rajaraman, Jeffrey D. Ull...
GPC
2010
Springer
14 years 1 months ago
Distributed Island-Based Query Answering for Expressive Ontologies
Scalability of reasoning systems is one of the main criteria which will determine the success of Semantic Web systems in the future. The focus of recent work is either on (a) expre...
Sebastian Wandelt, Ralf Möller
DKE
1999
118views more  DKE 1999»
13 years 7 months ago
Designing Data Warehouses
A Data Warehouse DW is a database that collects and stores data from multiple remote and heterogeneous information sources. When a query is posed, it is evaluated locally, without...
Dimitri Theodoratos, Timos K. Sellis