relational database model meaning in English

数据库模型

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Secondly , we study on how to build the object model for the system utilizing object - oriented technique in the system implement and the process of the mapping from object model to the relational database model in order to build the model of the relational database for the system
接着，研究了利用面向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过程，进而建立了系统的信息模型。
In this paper , the basic concepts of rough sets theory and research actuality of combining rough sets theory and relational database is introduced , the efficient algorithm of attributes reduction , correlative definition and algorithm of reduction in database and the rough relational database model is presented
本文介绍了粗糙集理论的基本概念和它与关系数据库中的研究现状,给出了高效的属性约简算法、数据库约简的相关定义和算法、粗糙关系数据模型。
Generally , the research of knowledge discovery is based on relational database , database reduction algorithm based on relational database directly obtains core of database , attributes reduction and rule reduction by operator in relational database . it is a simple and effective . essentially , rough relational database model in this paper , which extending classical rough sets model , is a multi - valued information system
知识发现研究的实施对象多为关系数据库,基于关系数据库操作的数据库约简算法利用关系数据库的操作算子直接对数据库进行求核、属性约简和规则约简,该方法充分发挥数据库操作的简便高效性,使得数据库约简算法简单易实现。
The definition of multi - valued information system is extended and the spatial structure of rough relational database model is analyzed in this paper . the measurement of uncertainty in rough database is provided . by analysis of the spatial structure of rrdb , the upper approximation , the lower approximation and value - reduced is educed . it provides the foundation for more studies in rough relational database model
本文分析了粗糙关系数据库模型的空间结构,为粗糙数据库的不确定性进行度量提供一个依据,同时通过对粗糙关系数据库空间结构的分析,导出了基于粗糙关系数据库的上、下近似以及值约简,为粗糙关系数据库模型的进一步研究提供了理论基础。

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relational database model meaning in English

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