rrdb 中文意思是什麼
rrdb
解釋
粗糙關系數據庫-
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
本文分析了粗糙關系數據庫模型的空間結構，為粗糙數據庫的不確定性進行度量提供一個依據，同時通過對粗糙關系數據庫空間結構的分析，導出了基於粗糙關系數據庫的上、下近似以及值約簡，為粗糙關系數據庫模型的進一步研究提供了理論基礎。
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