Some basic concepts are introduced in the first part, such as semijoin, selectivity factor, profit analysis, and distributed query processing.
依据笔者开发大型分布数据库的应用实践,首先介绍半连接、选择因子、收益分析等基础概念,其次介绍分布式查询处理过程,主要阐述以半连接为核心的SDD-1查询优化算法,最后以实例说明该算法的实现并比较实际收益情况。
Study on flotation agent selection test in Donghe Coal Preparation Plant
东河矿选煤厂浮选药剂选择试验研究
Experiment Study of The Selection with Superior Larix kaempferi Clones
日本落叶松优良无性系选择试验研究
The paper covers introductions of ordinary rubber wear test methods and the standards for selecting test conditions.
介绍最常用的橡胶磨耗试验方法和选择试验条件的标准。
Studies on the Selection to Excellent Host-fishes of Glochidia of Lamprotula Fibrosa;
绢丝丽蚌钩介幼虫优良宿主鱼选择试验研究
Selection experiment on the urgent conservation materials for the petroglyphs on the Flower Mountain,Guangxi;
广西花山岩画抢救性保护修复材料的选择试验
Selection of Aerobic Biological Process for Treatment of Integrated Mustard Tuber Wastewater
榨菜综合废水好氧生物处理工艺的选择试验
selection of tests for biodegradability
生物降解能力试验选择
We'll make experiments at selected points and acquire experience.
我们将选择试点来取得经验。
Selection and use of oscilloscope in ESD test
静电放电试验中示波器的选择与使用
Analysis of the Wire Drawing Testing of Copper Bar Drawer and the Selecting of Die
铜大拉机拉线试验及模具选择的分析
Analysis and Choice on Test Method for Fine Aggregate
细集料洁净程度试验方法分析与选择
Sand Bath Method and Choice of Thermal Stress Test Method for PCB and CCL
PCB、CCL热应力试验方法的选择和砂浴法
Study on Organic Depressant for Separation of Copper and Sulfur
铜硫分离有机抑制剂选择的试验研究
A Study on the Selection for Pilot-testing Scale and the Requirement for Investment;
试论中间试验的规模选择与投资决策条件
Influences on Test Result of The Selection of Parameter Control of Z600 Electronic Tensile Testing Machine of Germany
德国Z600电子拉伸试验机使用参数的选择对试验结果的影响
Influences on Test Result of the Selection of Parameter Control of Z600 Electronic Tensile Testing Machine
Z600电子拉伸试验机使用参数的选择对试验结果的影响
Select ion of Different Loading Mechanisms for Four-Square Power Cycling Gear-Box Test Stand
功率封闭齿轮箱试验台加载机构的选择
The west part of central Daqing Oilfiled was chosen as a dense well pattern development test region.
选择大庆油田中区西部为密井网开发试验区。
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