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» Using Queries to Improve Database Reverse Engineering
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SIGMOD
2007
ACM
170views Database» more  SIGMOD 2007»
15 years 10 months ago
Cardinality estimation using sample views with quality assurance
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
Per-Åke Larson, Wolfgang Lehner, Jingren Zho...
CSMR
2010
IEEE
14 years 4 months ago
Automating Coverage Metrics for Dynamic Web Applications
Abstract--Building comprehensive test suites for web applications poses new challenges in software testing. Coverage criteria used for traditional systems to assess the quality of ...
Manar H. Alalfi, James R. Cordy, Thomas R. Dean
SIGMOD
2009
ACM
157views Database» more  SIGMOD 2009»
15 years 10 months ago
Asynchronous view maintenance for VLSD databases
The query models of the recent generation of very large scale distributed (VLSD) shared-nothing data storage systems, including our own PNUTS and others (e.g. BigTable, Dynamo, Ca...
Parag Agrawal, Adam Silberstein, Brian F. Cooper, ...
AMW
2009
14 years 11 months ago
Using Patterns for Faster and Scalable Rewriting of Conjunctive Queries
Abstract. Rewriting of conjunctive queries using views has many applications in database and data integration. We investigate ways to improve performance of rewriting and propose a...
Ali Kiani, Nematollaah Shiri
IS
2007
14 years 9 months ago
Evaluation of probabilistic queries over imprecise data in constantly-evolving environments
Sensors are often employed to monitor continuously changing entities like locations of moving objects and temperature. The sensor readings are reported to a database system, and a...
Reynold Cheng, Dmitri V. Kalashnikov, Sunil Prabha...