ACM Computing Surveys (CSUR)
Implementation of a prototype for PRECI
The Computer Journal
Logic-based approach to semantic query optimization
ACM Transactions on Database Systems (TODS)
Federated database systems for managing distributed, heterogeneous, and autonomous databases
ACM Computing Surveys (CSUR) - Special issue on heterogeneous databases
Strategies for distributed query optimization
Information Sciences: an International Journal
Semantic query optimization in distributed database
ICCI'90 Proceedings of the international conference on Advances in computing and information
Correcting execution of distributed queries
DPDS '90 Proceedings of the second international symposium on Databases in parallel and distributed systems
An overview of the multidatabase system MRDSM
ACM '85 Proceedings of the 1985 ACM annual conference on The range of computing : mid-80's perspective: mid-80's perspective
Adaptive Techniques for Distributed Query Optimization
Proceedings of the Second International Conference on Data Engineering
Database Integration in a Distributed Heterogeneous Database System
Proceedings of the Second International Conference on Data Engineering
Supporting database access in the Hermes programming language
CASCON '91 Proceedings of the 1991 conference of the Centre for Advanced Studies on Collaborative research
The CORDS multidatabase project
IBM Systems Journal
Solving Local Cost Estimation Problem for Global Query Optimization in Multidatabase Systems
Distributed and Parallel Databases
A piggyback method to collect statistics for query optimization in database management systems
CASCON '98 Proceedings of the 1998 conference of the Centre for Advanced Studies on Collaborative research
CASCON '92 Proceedings of the 1992 conference of the Centre for Advanced Studies on Collaborative research - Volume 2
CORDS multidatabase project: research and prototype overview
CASCON '93 Proceedings of the 1993 conference of the Centre for Advanced Studies on Collaborative research: distributed computing - Volume 2
An integrated method for estimating selectivities in a multidatabase system
CASCON '93 Proceedings of the 1993 conference of the Centre for Advanced Studies on Collaborative research: distributed computing - Volume 2
Query optimization using fuzzy set theory for multidatabase systems
CASCON '93 Proceedings of the 1993 conference of the Centre for Advanced Studies on Collaborative research: distributed computing - Volume 2
Query optimization in database grid
GCC'05 Proceedings of the 4th international conference on Grid and Cooperative Computing
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A multidatabase system (MDBS) integrates information from autonomous local databases managed by heterogeneous database management systems (DBMS) in a distributed environment. For a query involving more than one database, global query optimization should be performed to achieve good overall system performance. The significant differences between an MDBS and a traditional distributed database system (DDBS) make query optimization in the former more challenging than in the latter. Challenges for query optimization in an MDBS are discussed in this paper. A two-phase optimization approach for processing a query in an MDBS is proposed. Several global query optimization techniques suitable for an MDBS, such as semantic query optimization, query optimization via probing queries, parametric query optimization and adaptive query optimization, are suggested. The architecture of a global query optimizer incorporating these techniques is designed.