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。
数据库 数据库管理系统及其实现技术 释文 query optimization 查询优化
- distinguished subset
- distinguished teacher studio
- distinguished triangle
- distinguished truth value
- distinguished vertex
- Distinguisher of Functional Characters
- distinguishing characteristic
- distinguishing of quantum state
- distinguishing problem
- Distinguish Meridians by Analyzing Bones
- distoceptor
- distomat
- distomer
- distometer
- distonic radical cation
- distorted
- distorted image
- distorted lattice
- distorted peak
- distorted polyhedra
- distorted thread effect weave
- distorted wave
- distorted wave Born approximation
- distorted wave Born approximation, DWBA
- distorting medium