Invited Project Review: Industrial-strength parallel query optimization: issues and lessons

@article{Lanzelotte1994InvitedPR,
  title={Invited Project Review: Industrial-strength parallel query optimization: issues and lessons},
  author={Rosana S. G. Lanzelotte and Patrick Valduriez and Mohamed Za{\"i}t and Mikal Ziane},
  journal={Inf. Syst.},
  year={1994},
  volume={19},
  pages={311-330}
}
In the industrial context of the EDS project, we have designed and implemented a query optimizer which we have integrated within a parallel database system. The optimizer takes as input a query expressed in ESQL, an extension of SQL with objects and rules, and produces a minimum cost parallel execution plan. Our research agenda has focused on several diicult problems: support of ESQL's advanced features such as path expressions and recursion, modelling of parallel execution spaces and… CONTINUE READING
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