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Abstract: A major challenge for global query optimization in a multidatabase system (MDBS) is lack of local cost information at the global level due to local autonomy. A number of methods to derive local cost models have been suggested recently. However, these methods are only suitable for a static multidatabase environment. In this paper, we propose a new multi-states query sampling method to develop local cost models for a dynamic environment. The system contention level at a dynamic local site is... (Update)
Context of citations to this paper: More
.... adaptive evaluation techniques at the plan and operator implementation level are described in [3, 13, 14, 16, 25] Research in [2, 7, 19, 15, 17, 32] have addressed various aspects of the task of modifying an optimizer to handle distributions for various parameters, e.g....
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Cost-Driven View Maintenance over Distributed Data Sources - Liu, Rundensteiner (2003) (Correct)
Cost Modeling and Estimation - For Olap-Xml Federations (Correct)
Classifying Local Queries For Global Query Optimization In.. - Zhu (Correct)
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0.8: Solving Local Cost Estimation Problem for Global Query.. - Zhu, al. (1998) (Correct)
0.5: Cost Models DO Matter: Providing Cost Information for.. - Roth, Özcan, Haas (Correct)
0.4: A Query Sampling Method for Estimating Local Cost Parameters in .. - Zhu, Larson (1994) (Correct)
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1.9: Cost Estimation for Large Queries via Fractional Analysis .. - Zhu, Motheramgari, Sun (Correct)
0.3: Multidatabase Recoverability and Recovery - Georgakopoulos (1991) (Correct)
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BibTeX entry: (Update)
Q. Zhu, S. Yun, and S. Motheramgari. Developing cost models with qualitative variables for dynamic multidatabase environments. Proceedings of the ICDE, pages 413--424, 2000. 24 http://citeseer.ist.psu.edu/zhu00developing.html More
@inproceedings{ zhu00developing,
author = "Qiang Zhu and Yu Sun and S. Motheramgari",
title = "Developing Cost Models with Qualitative Variables for Dynamic Multidatabase Environments",
booktitle = "{ICDE}",
pages = "413-424",
year = "2000",
url = "citeseer.ist.psu.edu/zhu00developing.html" }
Citations (may not include all citations):511 Federated database systems for managing distributed (context) - Sheth - 1990
168 Query caching and optimization in distributed mediator syste.. - Adali - 1996
151 Interoperability of multiple autonomous databases (context) - Litwin - 1990
133 CURE: An Efficient Clustering Algorithm for Large Databases - Guha - 1998
78 Applied Linear Statistical Models (context) - Neter - 1990
74 Cost-based query scrambling for initial delays - Urhan - 1998
68 Query optimization in heterogeneous DBMS (context) - Du - 1992
33 Cost models DO matter: providing cost information for divers.. - Roth, Ozcan et al. - 1999
29 Leveraging mediator cost models with heterogeneous data sour.. - Naacke, Gardarin et al. - 1998
19 A query sampling method for estimating local cost parameters.. - Zhu, Larson - 1994
17 Calibrating the query optimizer cost model of IRO-DB (context) - Gardarin - 1996
16 Reducing Multidatabase Query Response Time by Tree Balancing (context) - Du, Shan et al. - 1995
9 The CORDS multidatabase project - Attaluri, Bradshaw et al. - 1995
7 On global query optimization in multidatabase systems (context) - Lu, Shan - 1992
6 Solving local cost estimation problem for global query optim.. - Zhu, Larson - 1998
5 Building regression cost models for multidatabase systems - Zhu, Larson - 1996
4 Statistical Methods for Business and Economics (context) - Pfaffenberger - 1987
3 A fuzzy query optimization approach for multidatabase system.. (context) - Zhu, Larson - 1997
3 Query Optimization in Multidatabase Systems Considering Sche.. (context) - Lee, Chen - 1997
Documents on the same site (http://www.engin.umd.umich.edu/~qzhu/nsf9811980/nsf98.html): More
Solving Local Cost Estimation Problem for Global Query.. - Zhu, al. (1998) (Correct)
A Query Sampling Method for Estimating Local Cost Parameters in .. - Zhu, Larson (1994) (Correct)
An Integrated Method for Estimating Selectivities in a.. - Zhu (1993) (Correct)
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