The method to implement multimedia database system NHMDB based on NF2 model is described in the paper.

本文论述了基于NF2模型实现多介质数据库系统NHMDB的方法。

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Contentbased image retrieval is a hotspot in the research of multimedia database system and digital library.

基于内容的图像检索技术是当前多媒体数据库系统和数字图书馆研究中的一个热点。

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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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