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On optimal site assignment for relations in the distributed database environment

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2 Author(s)
Cornell, D.W. ; IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA ; Yu, P.S.

In a distributed database environment, the site assignment of relations is a critical issue. When the joint operations in a query involve relations over multiple sites, the site to carry out the joint operation can have a significant impact on the performance. Based on the query descriptions and arrival frequency to each site, a methodology is developed to assign relations and determine joint sites simultaneously. The methodology first decomposes queries into relation steps and then makes site assignments based on either a linear integer programming technique to minimize the amount of intersystem communication while balancing resource utilizations across systems, or a heuristic technique to minimize average response time under similar resource constraints

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Software Engineering, IEEE Transactions on  (Volume:15 ,  Issue: 8 )