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Jin Hongping, Gu Junzhong. The Optimization of Distributed Join in C-POREL System[J]. Journal of Computer Science and Technology, 1987, 2(4): 276-286.
Citation: Jin Hongping, Gu Junzhong. The Optimization of Distributed Join in C-POREL System[J]. Journal of Computer Science and Technology, 1987, 2(4): 276-286.

The Optimization of Distributed Join in C-POREL System

  • C-POREL is a distributed relational data base management system, with full distribution transparency. A relation can be horizontally fragmented into several subrelations allocated to different sites. When two or more fragmented relations appear in a join query, many-to- many semijoins between correspondent relations are usually needed in order to fully reduce relations involved. Distribution dependent attributes of a relational schema are defined in this paper. An optimization approach of distributed join w...
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