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160
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SIGMOD
2002
ACM
134views Database» more  SIGMOD 2002»
16 years 5 months ago
Data Modelling versus Ontology Engineering
Ontologies in current computer science parlance are computer based resources that represent agreed domain semantics. Unlike data models, the fundamental asset of ontologies is the...
Peter Spyns, Robert Meersman, Mustafa Jarrar
WAIM
2007
Springer
15 years 11 months ago
The Selection of Tunable DBMS Resources Using the Incremental/Decremental Relationship
The DBMS performance might change by allocating resources and by performing a specific kind of workload. Database administrators should be able to identify relative resources that ...
Jeong Seok Oh, Hyun Woong Shin, Sang Ho Lee
142
Voted
PODS
2005
ACM
86views Database» more  PODS 2005»
15 years 10 months ago
An incremental algorithm for computing ranked full disjunctions
The full disjunction is a variation of the join operator that maximally combines tuples from connected relations, while preserving all information in the relations. The full disju...
Sara Cohen, Yehoshua Sagiv
CIKM
2005
Springer
15 years 10 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
159
Voted
ICDT
2001
ACM
110views Database» more  ICDT 2001»
15 years 9 months ago
On Answering Queries in the Presence of Limited Access Patterns
In information-integration systems, source relations often have limitations on access patterns to their data; i.e., when one must provide values for certain attributes of a relatio...
Chen Li, Edward Y. Chang