“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	City Zero Distance Ciudad de México CIVDC civex civic culture civic education civic improvement civil administration civil administration in Three Kingdoms regime civil agent ad litem civil aircraft maintenance civil aircraft preliminary design civil air-defence engineering civil air defense shelter civil air defense works fire Civil Air Navigation Services Organization civil airport civil airport ground service civil and commercial intercourse habits survey Civil and Mineral Engineering Building, University of Minnisota, USA civil and structural work of concentrators civil appellate procedure civil aviation Civil Aviation Administration of China civil aviation computer reservation system

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。