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» Semigroup Techniques in Recursive Query Optimization
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PPDP
2010
Springer
13 years 4 months ago
Deriving predicate statistics in datalog
Database query optimizers rely on data statistics in selecting query execution plans. Similar query optimization techniques are desirable for deductive databases and, to make this...
Senlin Liang, Michael Kifer
ER
2008
Springer
110views Database» more  ER 2008»
13 years 8 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
ICDE
2008
IEEE
127views Database» more  ICDE 2008»
14 years 7 months ago
Querying Data under Access Limitations
Data sources on the web are often accessible through web interfaces that present them as relational tables, but require certain attributes to be mandatorily selected, e.g., via a w...
Andrea Calì, Davide Martinenghi
SIGMOD
2006
ACM
126views Database» more  SIGMOD 2006»
14 years 6 months ago
Declarative networking: language, execution and optimization
The networking and distributed systems communities have recently explored a variety of new network architectures, both for applicationlevel overlay networks, and as prototypes for...
Boon Thau Loo, Tyson Condie, Minos N. Garofalakis,...
LPAR
2005
Springer
13 years 11 months ago
Incremental Integrity Checking: Limitations and Possibilities
Integrity checking is an essential means for the preservation of the intended semantics of a deductive database. Incrementality is the only feasible approach to checking and can be...
Henning Christiansen, Davide Martinenghi