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» The Complexity of Query Reliability
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BDA
2007
13 years 11 months ago
Pattern by Example: type-driven visual programming of XML queries
We present Pattern-by-Example (PBE), a graphical language that allows users with little or no knowledge of pattern-matching and functional programming to define complex and optim...
Véronique Benzaken, Giuseppe Castagna, Dari...
CCCG
2007
13 years 11 months ago
Fast Computation of Smallest Enclosing Circle with Center on a Query Line Segment
Here we propose an efficient algorithm for computing the smallest enclosing circle whose center is constrained to lie on a query line segment. Our algorithm preprocesses a given s...
Arindam Karmakar, Sasanka Roy, Sandip Das
GLOBE
2008
Springer
13 years 11 months ago
Query Propagation in a P2P Data Integration System in the Presence of Schema Constraints
This paper addresses the problem of data integration in a P2P environment, where each peer stores schema of its local data, mappings between the schemas, and some schema constraint...
Tadeusz Pankowski
AMW
2011
13 years 1 months ago
SNQL: A Social Networks Query and Transformation Language
Abstract. Social Network (SN) data has become ubiquitous, demanding advanced and flexible means to represent, transform and query such data. In addition to the intrinsic challenge...
Mauro San Martín, Claudio Gutierrez, Peter ...
SIGMOD
2007
ACM
219views Database» more  SIGMOD 2007»
14 years 10 months ago
Efficient exploitation of similar subexpressions for query processing
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
Jingren Zhou, Johann Christoph Freytag, Per-Å...