粗糙关系数据库 meaning in Chinese

rrdb

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。