Sciweavers

1004 search results - page 117 / 201
» Safe Constraint Queries
Sort
View
PPDP
2010
Springer
13 years 7 months ago
Graph queries through datalog optimizations
This paperdescribes the use of a powerful graph query language for querying programs, and a novel combination of transformations for generating efficient implementations of the q...
K. Tuncay Tekle, Michael Gorbovitski, Yanhong A. L...
SIGMOD
2001
ACM
108views Database» more  SIGMOD 2001»
14 years 9 months ago
PREFER: A System for the Efficient Execution of Multi-parametric Ranked Queries
Users often need to optimize the selection of objects by appropriately weighting the importance of multiple object attributes. Such optimization problems appear often in operation...
Vagelis Hristidis, Nick Koudas, Yannis Papakonstan...
VLDB
2007
ACM
182views Database» more  VLDB 2007»
14 years 2 months ago
Continuous Queries in Oracle
This paper describes Continuous Queries (CQ) in Oracle RDBMS, a feature that incorporates stream and complex event processing into an RDBMS, the first such attempt in commercial d...
Sankar Subramanian, Srikanth Bellamkonda, Hua-Gang...
VLDB
2004
ACM
227views Database» more  VLDB 2004»
14 years 2 months ago
Approximate NN queries on Streams with Guaranteed Error/performance Bounds
In data stream applications, data arrive continuously and can only be scanned once as the query processor has very limited memory (relative to the size of the stream) to work with...
Nick Koudas, Beng Chin Ooi, Kian-Lee Tan, Rui Zhan...
SIGMOD
1996
ACM
133views Database» more  SIGMOD 1996»
14 years 29 days ago
Multi-dimensional Resource Scheduling for Parallel Queries
Scheduling query execution plans is an important component of query optimization in parallel database systems. The problem is particularly complex in a shared-nothing execution en...
Minos N. Garofalakis, Yannis E. Ioannidis