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» Effective keyword-based selection of relational databases
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SIGMOD
2007
ACM
413views Database» more  SIGMOD 2007»
14 years 3 months ago
Effective keyword-based selection of relational databases
The wide popularity of free-and-easy keyword based searches over World Wide Web has fueled the demand for incorporating keyword-based search over structured databases. However, mo...
Bei Yu, Guoliang Li, Karen R. Sollins, Anthony K. ...
VLDB
2004
ACM
144views Database» more  VLDB 2004»
13 years 9 months ago
Returning Modified Rows - SELECT Statements with Side Effects
SQL in the IBM® DB2® Universal Database™ for Linux®, UNIX®, and Windows® (DB2 UDB) database management product has been extended to support nested INSERT, UPDATE, and DELET...
Andreas Behm, Serge Rielau, Richard Swagerman
SIGMOD
2006
ACM
194views Database» more  SIGMOD 2006»
14 years 3 months ago
Graph-based synopses for relational selectivity estimation
This paper introduces the Tuple Graph (TuG) synopses, a new class of data summaries that enable accurate selectivity estimates for complex relational queries. The proposed summari...
Joshua Spiegel, Neoklis Polyzotis
ADBIS
2006
Springer
139views Database» more  ADBIS 2006»
13 years 7 months ago
Xeek: An Efficient Method for Supporting XPath Evaluation with Relational Databases
We introduce Xeek, a method for managing XML documents using relational databases. Most previous proposals in which the XPath axes are evaluated using only the pre- and postorder n...
Olli Luoma
CIKM
2005
Springer
13 years 9 months ago
Selectivity-based partitioning: a divide-and-union paradigm for effective query optimization
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
Neoklis Polyzotis