In broad themes, database management systems (DBMSs) have historically been of three types: hierarchical, relational, and object-oriented.
从广义角度来说，数据库管理系统(DBMS)在历史上划分成三种类型：层次、关系和面向对象。
The query syntax is object oriented and there is no concept of tables, indices, or other typical relational-database concepts. For example, the following query returns all StockBean objects in a list.
查询语法是面向对象的，并且没有了表、索引或其他典型的对象关系型数据库的概念。
As I explained, an object database like db4o simply has more to offer to object-oriented developers, in today's object-oriented world, than its relational Cousins.
正如我所说的，在当今的面向对象世界里，与关系数据库相比，db4o这样的对象数据库可以为面向对象开发人员提供更多的功能。
NHMDB is a multimedia database system based on the extended relational data model and has the characteristics of object-oriented databases.
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。
The model is suitable for not only relational database structure, but also object oriented database structure.
该模型既适合于关系数据库结构，也适合于面向对象数据库结构。
This article discusses a new mapped method of object model and database model, which has been employed to design an object-oriented relational database.
利用一种对象模型与数据库模型的映射方法，完成了一个面向对象的关系数据库设计。
Persistent object can be stored in Object-Oriented Database directly, or be transferred into Relational Model to be persisted in Relational Database.
持久化对象数据可以直接使用面向对象数据库，或者通过转换存储在关系数据库中。
The design and realization of an object-oriented scientific research information database management system based on a relational database is introduced in this paper.
介绍一个面向对象的科研信息数据库管理系统的设计与实现。
In this paper, based on a schema translation from Object-Oriented Database (OODB) to Relational Database (RDB), it proposes an algorithm for translating OODB query to RDB query.
文章基于从面向对象数据库(OODB)到关系数据库(rdb)的模式转换，提出了一种从面向对象数据库查询到关系数据库查询的转换算法。
Through entity-relational mapping tool to relational database mapping data into a target to achieve the object-oriented manner in order to operate the database.
通过实体关系映射工具将关系型数据库的数据映射成对象，实现了以面向对象方式操作数据库。
Finally, since the data is stored in a relational database, the paper describes the item tracking query and object-oriented path query into SQL statements as the template form.
最后，由于数据是存储在关系数据库中，本文还以模板的形式，介绍了把物品追踪查询和面向路径查询转化成SQL语句的方法。
The mapping strategies from object model to relational database model are the core of object-oriented relational database design.
结合油气储运网络管理系统的一期工 程实践，对对象模型向关系数据库模式映射的策略进行了讨论。
The mapping strategies from object model to relational database model are the core of object-oriented relational database design.
结合油气储运网络管理系统的一期工 程实践，对对象模型向关系数据库模式映射的策略进行了讨论。
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