relational data model

基本解释

Mapping a data representation from an object model to a relational data model with a SQL-based schema.
用来把对象模型表示的对象映射到基于SQL的关系模型数据结构中去。
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 paper also indicated the remaining problems which would be paid attention during the completion and development of the relational data model .
同时还提示了在完成和发展该关系数据模型中所需注意的问题。