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» Decoupled Query Optimization for Federated Database Systems
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ICDE
2010
IEEE
408views Database» more  ICDE 2010»
15 years 4 months ago
Hive - a petabyte scale data warehouse using Hadoop
— The size of data sets being collected and analyzed in the industry for business intelligence is growing rapidly, making traditional warehousing solutions prohibitively expensiv...
Ashish Thusoo, Joydeep Sen Sarma, Namit Jain, Zhen...
VLDB
2007
ACM
106views Database» more  VLDB 2007»
15 years 3 months ago
Why You Should Run TPC-DS: A Workload Analysis
The Transaction Processing Performance Council (TPC) is completing development of TPC-DS, a new generation industry standard decision support benchmark. The TPC-DS benchmark, firs...
Meikel Pöss, Raghunath Othayoth Nambiar, Davi...
DEDUCTIVE
1997
119views Database» more  DEDUCTIVE 1997»
14 years 10 months ago
Inheritance with Overriding Without Non-monotonic Reasoning in Datalog++
We present a query language, called the Datalog++ , for deductive object-oriented databases. While a direct semantics for inheritance with overriding and encapsulation is desirabl...
Hasan M. Jamil
95
Voted
PODS
2007
ACM
159views Database» more  PODS 2007»
15 years 9 months ago
Generalized hypertree decompositions: np-hardness and tractable variants
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
Georg Gottlob, Thomas Schwentick, Zoltán Mi...
EDBT
2006
ACM
105views Database» more  EDBT 2006»
15 years 9 months ago
HASE: A Hybrid Approach to Selectivity Estimation for Conjunctive Predicates
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...
Xiaohui Yu, Nick Koudas, Calisto Zuzarte