CORDS multidatabase project: research and prototype overview

One of the data services offered within the CORDS Service Environment is a multidatabase. Fulfilling this service requirement is the man date of the CORDS Multidatabase project involving researchers at the University of Waterloo and Queen's University. One objective of this project is to research issues in multidatabase systems. Thus far these include schema integration, (global) query decomposition and optimization, and distributed transaction management. A second objective is to design and implement a multidatabase prototype. The latter objective presented an opportunity to explore and assess a number of international and industry standards: for example, Microsoft's Open Database Connectivity (oDBC) and the Open Software Foundation's Distributed Computing Environment (OSF/DCE).This paper discusses the overall design of the multidatabase, the research issues addressed, and the status of the prototype implementation.

[1]  Jari Veijalainen,et al.  2PC Agent method: achieving serializability in presence of failures in a heterogeneous multidatabase , 1990, Proceedings. PARBASE-90: International Conference on Databases, Parallel Architectures, and Their Applications.

[2]  Per-Åke Larson,et al.  Query optimization using fuzzy set theory for multidatabase systems , 1993, CASCON.

[3]  Gopi K. Attaluri.  Logical concurrency control for large objects in a multidatabase system , 1993, CASCON.

[4]  Per-Ake Larson,et al.  Performing Group-By before Join , 1994, ICDE 1994.

[5]  Gopi K. Attaluri.  Issues in managing long transactions and large objects in a multidatabase system , 1992, CASCON.

[6]  Wendy Powley,et al.  Database integration using multidatabase views , 1993, CASCON.

[7]  Jianchun Zhang.  Classifying approaches to semantic heterogeneity in multidatabase systems , 1992, CASCON.

[8]  Per-Åke Larson,et al.  Establishing a fuzzy cost model for query optimization in a multidatabase system , 1994, 1994 Proceedings of the Twenty-Seventh Hawaii International Conference on System Sciences.

[9]  Jari Veijalainen,et al.  Prepare and commit certification for decentralized transaction management in rigorous heterogeneous multidatabases , 1992, [1992] Eighth International Conference on Data Engineering.

[10]  Qiang Zhu,et al.  An integrated method for estimating selectivities in a multidatabase system , 1993, CASCON.

[11]  James Won-Ki Hong,et al.  An integrated architecture for distributed applications , 1993, CASCON.

[12]  Qiang Zhu.  Query optimization in multidatabase systems , 1992, CASCON.

[13]  Per-Åke Larson,et al.  Exploiting uniqueness in query optimization , 1994, Proceedings of 1994 IEEE 10th International Conference on Data Engineering.

[14]  Jungyun Seo,et al.  Classifying schematic and data heterogeneity in multidatabase systems , 1991, Computer.

[15]  Jacob Slonim,et al.  Directory requirements for a multidatabase service , 1992, CASCON.