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VLDB
1995
ACM
96views Database» more  VLDB 1995»
13 years 11 months ago
The Fittest Survives: An Adaptive Approach to Query Optimization
Traditionally, optimizers are “programmed” to optimize queries following a set of buildin procedures. However, optimizers should be robust to its changing environment to gener...
Hongjun Lu, Kian-Lee Tan, Son Dao
BDA
2007
13 years 9 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...
ECIR
2006
Springer
13 years 9 months ago
Morphological Variation of Arabic Queries
Although it has been shown that in test collection based studies, stemming improves retrieval effectiveness in an information retrieval system, morphological variations of queries ...
Asaad Alberair, Mark Sanderson
GVD
2004
142views Database» more  GVD 2004»
13 years 9 months ago
Semantic Errors in SQL Queries: A Quite Complete List
We investigate classes of SQL queries which are syntactically correct, but certainly not intended, no matter for which task the query was written. For instance, queries that are c...
Christian Goldberg, Stefan Brass
DAWAK
2010
Springer
13 years 8 months ago
Discovery and Application of Functional Dependencies in Conjunctive Query Mining
Abstract. We present an algorithm for mining frequent queries in arbitrary relational databases, over which functional dependencies are assumed. Building upon previous results, we ...
Bart Goethals, Dominique Laurent, Wim Le Page