Research on geographical relational database model in webgis 中的地理关系数据库模型研究
Rough relational database model and its relational operations 关系数据库模型及其关系操作
Research and implement on relational databases model with special attributes 草莓保鲜方法研究初报
Are consistent with those in the relational database model Dataset中的方法和对象与关系数据库模型中的方法和对象一致。
But mapping class hierarchies to a relational database model might prove somewhat difficult 但是,把类的层次结构映射到关系数据库模型,可能会比较困难。
In the 1970s , the rigorous mathematical work of e . f . codd and others created the now - ubiquitous relational database model 70年代, e . f . codd与其他一些人通过严格的数学工作创造了现在无处不在的关系数据库模型。
This article covers three strategies that you can use in your everyday programming to easily map complex object models to relational database models 本文将介绍三个策略,在日常的编程之中您可以用它们把复杂的对象模型容易地映射到关系数据库模型。
Abstract : temporal relational database model is extended from relational database by adding time processing , and temporal object - orient database model is extended from object - orient database by adding time processing 文摘:时态关系数据库在关系数据库的基础上扩充了对时间数据的处理,而时态面向对象数据库则是在面向对象数据库的基础上扩充了对时间数据的处理。
While xml enthusiasts have begun to see everything in the world encoded with xml tags , the relational database model is entrenched and most of the world s digital data is encoded in tables that are composed of rows and fields 虽然xml的狂热者可能将世界上的一切都看成是用xml标签编码的,单关系数据库模型仍然根深蒂固,世界上大部分数字数据是用由行和列组成的表来进行编码的。
This paper makes use of how to build the object model for the system utilizing object - oriented tecnique in the system implement and the process of the mapping from object model to the relational database model in order to build database 依据所提出的产开发过程模型,说明了基于动程的产品开发建模方法? dmpa 。利用面相对象技术建立系统对象模型的方法,以及对象模型向关系数据库的映射,建立数据库。