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VLDB
2002
ACM
129views Database» more  VLDB 2002»
13 years 7 months ago
Optimizing View Queries in ROLEX to Support Navigable Result Trees
An increasing number of applications use XML data published from relational databases. For speed and convenience, such applications routinely cache this XML data locally and acces...
Philip Bohannon, Sumit Ganguly, Henry F. Korth, P....
DFG
2004
Springer
13 years 11 months ago
Verification of PLC Programs Given as Sequential Function Charts
Programmable Logic Controllers (PLC) are widespread in the manufacturing and processing industries to realize sequential procedures and to avoid safety-critical states. For the spe...
Nanette Bauer, Sebastian Engell, Ralf Huuck, Sven ...
ER
2008
Springer
110views Database» more  ER 2008»
13 years 9 months ago
Conjunctive Query Containment under Access Limitations
Access limitations may occur when querying data sources over the web or heterogeneous data sources presented as relational tables: this happens, for instance, in Data Exchange and ...
Andrea Calì, Davide Martinenghi
ADBIS
2004
Springer
224views Database» more  ADBIS 2004»
14 years 1 months ago
Using Ontologies for Database Query Reformulation
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
Chokri Ben Necib, Johann Christoph Freytag
EDBT
2010
ACM
145views Database» more  EDBT 2010»
13 years 11 months ago
Splash: ad-hoc querying of data and statistical models
Data mining is increasingly performed by people who are not computer scientists or professional programmers. It is often done as an iterative process involving multiple ad-hoc tas...
Lujun Fang, Kristen LeFevre