In This paper, we suggest a new term IODB (Intensional object oriented database) to represent a certain kind of class in object oriented databases.

为提高对象数据库的表达能力，该文提出了一种新的对象概念——内涵对象(IODB)。

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The deductive and object-oriented databases are the frontiers of next-generation intelligent database systems.

本文介绍了演绎和面向对象数据库基本概念和数据库技术的新进展。

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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。

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