逻辑查询 meaning in English
boolean query
logical query
Examples
- In order to query " the data in multimedia database , we present logical query lancuaee based on multimedia - instance model and demonstrate the applications of the logical query language by some examples
为查询多媒体数据库中的数据，我们给出了基于媒体实例模型的逻辑查询语言，并举例说明该语言的应用。 - This study investigates and discusses the design and implement of cfdc , from the aspect of database designing , logical inquiring and the display , also introduces the theory of multidimensional data model , hibernate , strusts and tiles
本文从数据库设计、逻辑查询、页面显示等几个方面入手,结合多维数据模型、 hibernate映射理论、 struts框架理论以及tiles模板等多项先进技术,对本项目的设计与实现进行了深入的探讨与研究。 - Many mature technologies on this level have been brought out , such as the relational algebra law , the improved logical query plan , the cost estimation of operation , the selective plan based on cost and order of joint , etc . although many methods have been tried out , no remarkable result or noteworthy technology has come to reality because of complexity of data decomposition and network effects
例如，从物理查询计划的底层磁盘输入输出到语法分析阶段的语法分析树、用于改进查询计划的代数定律、逻辑查询计划的改进，以及操作代价的估计、基于代价的计划和连接顺序的选择等全过程，都进行了不懈的努力。在这方面的研究已经非常成熟。