系统的逻辑结构是对整个系统从思想的分类,把系统分成若干个逻辑单元,分别实现自己的功能。一般在系统开发时,逻辑结构往往都由架构师完成。系统的逻辑结构对系统的开发起到重要性的决定。 数据的逻辑结构是对数据之间关系的描述,有时就把逻辑结构简称为数据结构。逻辑结构形式地定义为(K,R)(或(D,S)),其中,K是数据元素的有限集,R是K上的关系的有限集。
例:plex=(C,R)严格地讲,数据结构一般包括三方面的内容:②逻辑结构(logical structure):数据元素之间的逻辑关系,是用户按使用需要建立起来,并呈现在用户面前的数据元素的结构形式。
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The conceptual model of system database is put forward and logical structure is designed.
4、提出了系统数据库的概念模型,并进行了逻辑结构设计。
参考来源 - 武警指挥调度系统的分析、设计及实现A common logic structure is described and then two practical examples are given,showing how to implement the platform in E-Government System.
先给出通用逻辑结构设计,然后通过两个具体实例阐述其应用机制。
参考来源 - 期刊学术社区The developing target, environment and the function pattern of the system are discussed base on the logical system structure. The spatial indexing technique is particularly analyzed and realized.
在系统的逻辑结构基础上,分析研究系统设计与开发的问题,包括应达到的目标、系统的开发环境及系统的功能模块等。
参考来源 - 路径规划算法研究与其在车载导航系统中的应用The logic structure of this article is divided into four chapters.
本文的逻辑结构共分四章。
参考来源 - 置身WTO后中国国内市场的统一The paper discusses the problem by the ways of theory analysis, comparative study and exercise analysis and the logical construction is as follows.
本文采用理论分析、比较研究、实证分析的方法对这一问题进行了论述,正文的逻辑结构如下。
参考来源 - 论公司法中的国家强制The logical structure of this thesis is as follows:The first part is the forming conditions of the thought of people’s livelihood of Mao Zedong.
本论文的逻辑结构如下:第一部分是毛泽东民生思想形成的条件。
参考来源 - 毛泽东民生思想研究·2,447,543篇论文数据,部分数据来源于NoteExpress
层次结构是组织创建用于表述其数据关系的逻辑结构。
Hierarchies are the logical structures that an organization creates to describe relationships among its data.
分析模型描述了系统的逻辑结构,因而它是设计模型的基础。
The analysis model describes the logical structure of the system; thus it is the foundation of the design model.
尽可能的简化,避免在单个批量应用中,构建复杂的逻辑结构。
Simplify as much as possible and avoid building complex logical structures in single batch applications.
Okay, not to dwell too much on math because you can very quickly bore someone in computer science by dwelling too much on math but it's useful even for logical constructs as we'll see with loops.
不要过于纠结于这些数学问题了,在计算机领域,你会很讨厌那些,在这上面钻牛角尖的人,但是对于那些,像循环这样的逻辑结构又是很有用的。
What's the point? Again, you can have things that are syntactically legal but not semantically meaningful, and static semantics is going to be a way of helping us decide what expressions, what pieces of code, actually have real meaning to it. All right?
重点是什么?重申,你可以有东西在语义结构的逻辑上有意义,但是在语义上无意义,而static语义,将是一个帮助我们,决定哪些表达,哪部分的代码实际上,有意义的途径,好么?
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