These are the database of articles on database theory and some applications of knowledge.
这些是数据库的一些文章,讲述了数据库的原理和一些应用方面的知识。
Seeking for candidate key of relation scheme is an important question in designing database theory.
寻找关系模式的候选码是数据库设计理论中的重要问题。
Furthermore, we research correlative database theory from every idiographic tache of the digitization modeling.
从数字化建模的每个具体环节研究了其相关数据库的理论。
Medical information management system is developed based on B/S model and using ASP technology and network database theory.
本课题运用ASP技术和网络数据库原理,基于B/S模式开发了体检信息管理系统。
Transaction is one of the core concepts in modern database theory, and concurrency control technology is the major component of transaction management.
事务是现代数据库理论中的核心概念之一,并发控制是事务管理的主要组成部分。
Combined with database techniques, there comes forth the concept of XML database. Researches on XML database theory and techniques are becoming more hot.
将XML与数据库技术结合,研究XML数据库的理论和技术,是当前XML的研究热点。
As one of the backbone courses for Network and Information security major, the course of database and security comprises database theory and technology, database security.
《数据库与安全》是计算机学院网络与信息安全专业的主干课之一,由数据库理论与技术和数据库安全两个方面构成。
This paper deals with the semantics of null values in functional dependencies in database theory, and presents three different definitions of FDs in a single relation with marked nulls.
本文研究关系数据库理论中空值在函数依赖中的语义问题,提出了带标志空值的关系中函数依赖的三种定义。
The thesis combines database theory with practical business analysis, developing theoretical and practical work in software structure of business system, its chief work is as followings.
本文把数据仓库理论和实际的业务分析相结合,在数据仓库的建设、业务分析系统的软件架构方面开展了理论和实践工作,主要的工作表现在。
This thesis which combines database theory with the actual situation of Chengdu railway bureau and its subordinate agencies accomplishes conceptual design and logic design of the database.
然后结合数据库相关理论和成都铁路局及其下级机构的实际情况,进行了数据库概念设计、逻辑设计。
In the relation of the database theory of the computer, we encounter some problems which can be translated into the problem for parameter and Hamilton cycle of double graphs or complement graphs.
计算机科学数据库的关系中遇到了可归为倍图或补倍图的参数和哈密顿圈的问题。
According to the data of surface seismic exploration and database theory, the authors put forward a method of database for refraction static correction and develop the DBRSC static correction system.
基于模型法静校正原理和数据库方法,提出了数据库静校正,并开发了DBRSC数据库静校正系统。
The database design of the system applications based on the relationship between the object-oriented database theory, Convenient access to information, at the same time improve the system scalability.
本系统的数据库设计应用了基于关系数据库的面向对象理论,方便了信息的获得,同时提高了系统的可扩展性。
The theory behind atomic transactions, rollbacks, and other critical database topics are very similar to the issues students study in operating systems.
原子事务、回滚和其它关键的数据库主题背后的理论非常类似于学生在操作系统中学习的问题。
Working with HIV proteins taken from a massive database, the team used random matrix theory to analyze HIV's genetic code and find groups of amino acids whose mutations were coordinated.
查卡拉波蒂和他的研究团队从大规模数据库中获取蛋白质数据,使用随机矩阵理论分析病毒的基因序列,最后发现几组氨基酸的突变是可调节的。
That approach may sound straightforward in theory, but in practice the vast variety of database structures and possible search terms poses a thorny computational challenge.
这种做法可能在理论上听起来很简捷,但在实践中大量各种不同的数据库结构和可能的搜索词构成了一个棘手的计算挑战。
Manipulations like this (backed by the proper relational theory) are at the heart of database query optimizers. The resulting tree is shown in Figure 2.
此类操作(由恰当的关系理论作为支持)是数据库查询优化器的核心所在。
If this were our theory, we might change our logging to log_update=2, which will record a time stamp for each view that is indexed, instead of at the database level.
如果这是我们的看法,我们可能将记录改为 log_update=2,这样将为建立索引的每个视图记录时间戳,而不是在数据库级别进行记录。
Rough Sets theory has great superiority in Data Preprocessing because of its particular expression of knowledge, as well as it makes an effective means of knowledge Discovery in Database.
粗糙集理论由于其独特的知识表示方法在数据预处理方面有着得天独厚的优势,同时也成为数据库中知识发现的有效手段。
It begins with the theory of intrusion tolerant, discusses a design of the database using the theory and the realizing of ballot in such a system.
从入侵容忍的理论入手,论述了一种入侵容忍的数据库系统的设计方案和在该系统中进行选举的实现过程。
Rough sets theory is emerging as a powerful tool as inducing knowledge classification knowledge from database.
粗合集合理论现在已成为数据库知识分类的一种强有力的工具。
Finally, with these theory results, a GIS software develop process is formulated exhausively. This system contains vector drawing sub-system and database sub-system.
最后综合应用前面这些理论结果,详细论述了自主研发的GIS系统,包括矢量绘图系统和数据库系统。
In theory, you can perform select, insert, update, or delete statements against a table that is not yet redistributed in the database partition group.
理论上讲,可以在数据库分区组中尚未重分发的表上执行select、insert、update或delete语句。
The distributed database system has its own characters and theory, though it was based on the centralized database system.
分布式数据库系统虽然基于集中式数据库系统,但却有一定的特色和理论基础。
The rotor bearing system was investigated using the stability and bifurcation theory for nonlinear dynamic system and the database method.
应用精度高、速度快的非线性油膜力数据库方法及非线性动力系统的稳定性和分叉理论对转子-轴承系统进行了分析。
In this paper, it researches and realizes the mapping theory between the object and relational database, and manages the persistent objects.
论文对数据对象与关系数据库之间映射理论和持久化对象管理技术进行了研究和实现。
It also introduces the basic points of how to use the software engineering method and the database design theory to develop software.
同时介绍了如何运用软件工程方法和数据库设计理论来开发软件的基本要点。
In normalization theory of relation database, finding candidate key and primary attribute is always a difficult problem.
在关系数据库规范化理论中,求解后选关键字和主属性一直是一个棘手的问题。
The relational standardization theory is the relational database development and the design important part.
关系规范化理论是关系数据库开发与设计的重要部分。
The relational standardization theory is the relational database development and the design important part.
关系规范化理论是关系数据库开发与设计的重要部分。
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