relational

The beginning of the second chapter introduces the basic concept of a relational database, the focus on a few key definition of the concept.

第二章的开端引见了关系型数据库的根本概念，着重阐明了几个关键概念的定义。

This made it extremely easy to persist the published records without the need to create the HL7 model in a traditional relational structure.

这使得持久化已发布的记录非常容易，并且不需要用传统的关系数据结构创建HL7模型。

Suffice it to say that it has no provision for instrumentation and it does not use any sort of object-relational mapping (ORM) framework.

可以肯定地说，它没有提供插装的供应，并且不使用任何种类的对象关系映射（object-relationalmapping，ORM）框架。

Note that this does not preclude the server from also providing support for the traditional, relational interfaces.

请注意，这并不排除服务器还会提供对传统关系接口的支持。

Although measure of fractal dimension of relational network is an unresolved question, we still attempt to suggest a way of measure.

尽管测量关系网络维数的值是一个还未解决的国际难题，但是本文还是尝试给出一种测量该维数的建议。

This kind of relational semblance looked like mutually connects, infact certainly does not look like the others to see like this.

此种关系外表看来互相交汇，实际上并不象别人看到的这样。

This huge Christmas sock, and has the relational meaning, the deaf person occurs the matter has the question difficulty.

这个庞大的圣诞袜，并有关系的意思，失聪人士发生的事有问题的困难。

The concept of inheritance throws in several interesting twists when saving objects into a relational database.

在将对象保存到关系数据库中时，继承的概念中发生几个有趣的问题。

It is often used outside of any relational databases to query XML data, which may be stored in text files.

XQuery常用于在关系数据库外查询XML数据，这些数据可能存储在文本文件中。

And a model of this architecture and a simple relational DBMS run on this architecture are implemented to verify the architecture.

为了验证这个体系结构，本文实现了一个基于这个体系结构和一个相关数据库系统的模型。

The relation has been used previously in a correspondence to map each class owned by a model to a table owned by a relational schema.

在前面关联曾被用在通讯中来把模型拥有的每个类映射到一个关联计划。

This tutorial is written for relational database professionals whose skills and experience are at a beginning to intermediate level.

本教程专门为水平在中低级之间的关系数据库专业人员编写的。

It takes the mind-numbing complexity of dealing with relational databases, and makes it a joy, not a burden.

它消除了复杂的关系数据库处理操作，现在它为用户添加了快乐而不是负担。

PHP has always had something of a love affair with the popular open source relational database management system (RDBMS) known as MySQL.

PHP与流行的开放源代码关系数据库管理系统（RDBMS）MySQL之间总是很有默契。

The same idea holds in a relational database, and the column used to make the link is referred to as a key column.

同样的概念在关系数据库中也存在，用来进行链接的列叫做键列（keycolumn）。

Please note that this article will not go into the general topic of object-relational mapping.

请注意，本文将不深入讨论对象-关系映射这一一般性的主题。

This is often a result of emulating extensibility in a relational database.

这通常是仿效关系数据库中可扩展性的结果。

When a relational database system is implemented, three-valued logic is usually adopted to handle incomplete information.

在关系数据库系统的实现中，对不完全信息的处理通常采用三值逻辑。

As join operation to relational database, structural join order selection is at the heart of query optimization in an XML database.

和关系数据库中的连接运算一样，结构连接顺序的选择是XML数据库查询优化的核心。

The linkage between the application and database tiers typically takes the form of SQL calls into a relational database.

应用程序和数据库层之间的联接通常采用关系数据库中的SQL调用格式。