“query optimization”的概念、定义、翻译、参考文献-科学参考

单词	query optimization
释义	query optimization Encyclopedia 理学数据库系统释 query optimization查询优化查询优化旨在通过选择有效策略，对给定的关系表达式求值，使得查询代价最小。 Computer 数据库数据库管理系统及其实现技术释文 query optimization查询优化
随便看	chain of projections chain of QSOs chain of relations chain of responsibility pattern chain of sets chain of subgroups chain of submodules chain of survival chain of syzygies chain of trust chain orientational disorder chain polymerization chain propagation chain propagation reaction chain ratio chain-react chain reaction chain reaction of nuclear fission chainreactor chain recurrence chain recurrent point chain recurrent set chain referral sampling chain rigidity chain ring

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