所幸我不必局限于关系数据模型。
那么XML与关系数据模型之间的关系究竟是怎样的？
So just what is the relationship between XML and the relational data model?
XML中次序的重要性与关系数据模型中缺少固有次序形成了鲜明对比。
The importance of order in XML contrasts sharply with the absence of intrinsic order in the relational data model.
克服这个矛盾的办法便是合理的将对象模型映射为关系数据模型。
The solution is to reasonably map object model to relation data model.
文章将以分布式应用程序体系结构为基础，阐述关系数据模型的转换过程。
Based on Program Architecture Description Language-NEWCOM, introduces the procedure of transferring relation data model in this paper.
并且，就实现基于模糊关系数据模型推理过程，给出了两个关键性的算法。
We build the knowledge database with this fuzzy relationship model and we present two important algorithms about the inference process of the fuzzy relationship model in this paper.
IT系统使用关系数据模型、大文件、面向对象模型和私有数据模型来对意义进行组织。
IT systems organize meanings using relational data models, flat files, object-oriented models, or proprietary data models.
变化的业务需求不断地要求向关系数据模型或面向对象模型中添加新实体和关系。
From time to time, the demands of changing business needs require that you add new entities and relationships to the relational data models or object-oriented models.
这是个图形化的数据建模工具，可创建使用关系数据库的实体-关系数据模型。
A graphical data modeling tool, allowing one to build Entity-Relation data models for use with Relational Databases (RDBMS).
用基于 SQL 的模式可以把数据呈现从对象模型映射到关系数据模型，对象关系映射引用了这项技术。
Object relational mapping refers to the technique of mapping the data representation from an object model to a relational data model with a SQL-based schema.
NHMDB是基于扩充关系数据模型的多媒介数据库系统，它以扩充关系为基础支持面向对象的主要特性。
NHMDB is a multimedia database system based on the extended relational data model and has the characteristics of object-oriented databases.
用实例说明如何将NEWCOM描述的信息转换为关系数据模型相应的表示，并给出转换算法的片段程序的描述。
It is showed how to transfer from NEWCOM to the relation data model in detail with some instances.
给出了中介关系数据模型，在此基础上构造了两类不同的中介关系数据库查询语言：中介关系演算和中介关系代数。
Based on this model, this paper constructs two different kinds of medium relational database query languages: medium relational calculus and medium relational algebra.
面向对象模型基于方法学原理，关系数据模型基于集合论原理，理论基础的不同导致了两种模型之间的阻抗不匹配。
The Object oriented model is built on methodology, while the relational data model is on basis of the set theory. The difference principal between the two models leads to the dispatch problem.
在关系数据模型的基础上，对主动模糊数据模型进行了研究，介绍了主动模糊数据库技术，分析了主动模糊数据库的结构。
Active fuzzy data model is studied based on relation data model. Following an introduction to active fuzzy database technology, the structure of active fuzzy database is analyzed.
本文通过扩展关系数据模型，形成了实体依赖关系数据模型，适用于组织有直接调用关系的模型或方法所组成的模型库或方法库。
This paper extends relational schema and then forms the entity-dependent relational schema, which can be used to organize model bases or method bases.
避开复杂繁琐的数学推导，分析了关系数据库理论中的函数依赖，数据模式的规范化及其分解这三个重要概念，指出了它们对关系数据模型设计的指导作用。
Three important conceptions-function dependence, normalization and dissolution of data scheme-are analysed. Their directive action for design of relational data model is pointed out as well.
了解关系数据库、数据模型、惟一键、主键、外键和表联结。
Learn about relational databases, data models, unique keys, primary keys, foreign keys, and table joins.
另外，必须在中间层中编写更多代码，将关系数据映射到对象数据模型或XML数据模型。
Plus, you would have to write additional code in the middle tier to map the relational data to an Object data Model or an XML data Model.
另一方面，物理数据模型是数据库特定的模型，它代表关系数据对象，例如表、列、主键、外键以及它们的关系。
On the other hand, a physical data model is a database-specific model that represents relational data objects (for example, tables, columns, primary and foreign keys, and their relationships).
查询语法是Erlang的一部分，数据模型类似于对象-关系数据库管理系统。
The query syntax is part of Erlang itself, while the data model is akin to an object-relational DBMS.
数据库设计是有效地实现关系数据库的关键，该门课程主要介绍如何建立数据模型，数据库的创建以及在商业环境下如何开发数据库。
Database design is crucial to effectively implement a relational database. In this course we discuss how to model data, database construction, and developing a database in a business environment.
本文介绍了一种基于关系数据库、利用XML技术实现多维数据模型方法。
This paper presented a method of construction of multi-dimensional data model based on relation databases and XML technology.
系统设计采用面向对象数据模型，数据库结构采用面向对象关系数据库系统。
The Object-Orient Data Model and the Object-Relative Database System(ORDBS) are adapted in the system structure for design and development.
系统设计采用面向对象数据模型，数据库结构采用面向对象关系数据库系统。
The Object-Orient Data Model and the Object-Relative Database System(ORDBS) are adapted in the system structure for design and development.
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