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EDBT
2009
ACM
160views Database» more  EDBT 2009»
15 years 10 months ago
Estimating aggregates in time-constrained approximate queries in Oracle
The concept of time-constrained SQL queries was introduced to address the problem of long-running SQL queries. A key approach adopted for supporting time-constrained SQL queries i...
Ying Hu, Seema Sundara, Jagannathan Srinivasan
SEBD
2007
148views Database» more  SEBD 2007»
15 years 7 months ago
Containment of Conjunctive Object Meta-Queries
We consider the problem of query containment over an object data model derived from F-logic. F-logic has generated considerable interest commercially, in the academia, and within ...
Andrea Calì, Michael Kifer
GPCE
2008
Springer
15 years 6 months ago
Generating incremental implementations of object-set queries
High-level query constructs help greatly improve the clarity of programs and the productivity of programmers, and are being introduced to increasingly more languages. However, the...
Tom Rothamel, Yanhong A. Liu
DEXA
1999
Springer
87views Database» more  DEXA 1999»
15 years 10 months ago
SECONDO/QP: Implementation of a Generic Query Processor
: In an extensible database system, evaluation of a query plan is done in cooperation between a collection of operator implementation functions and a component of the DBMS that we ...
Ralf Hartmut Güting, Stefan Dieker, Claudia F...
178
Voted
EDBT
2011
ACM
199views Database» more  EDBT 2011»
14 years 9 months ago
Predicting completion times of batch query workloads using interaction-aware models and simulation
A question that database administrators (DBAs) routinely need to answer is how long a batch query workload will take to complete. This question arises, for example, while planning...
Mumtaz Ahmad, Songyun Duan, Ashraf Aboulnaga, Shiv...