relational operator 中文意思是什麼

relational operator 解釋
關系操作符
  • relational : adj. 有關系的;親戚的;(特指語法上)表示關系的。adv. -ly
  • operator : n 1 操作者,機務員;司機,駕駛員;【軍事】電話兵;【電話】接線員,話務員(=telephone operator)...
  1. Relational algebraic operator this node represents

    此節點表示的關系代數運算符。
  2. Secondly, based on the classification of fuzzy set semantics, we give a new definition on data type. thirdly, by new data types, we give a new fuzzy relational database management system ( frdbs ) database language ( dbl ) and a new quotient operator based on the semantics in fuzzy relational database

    利用模糊集合的語義分類,本文提出了一種新的模糊數據類型劃分方法,在此基礎上提出了一種改進的模糊數據庫語言,並提出了一種基於語義的模糊關系除操作和用於數據類型之間進行轉換的上操作和下操作。
  3. In relational databases, an operator in relational algebra

    在關系數據庫中,關系代數用的一種運算符。
  4. 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

    知識發現研究的實施對象多為關系數據庫,基於關系數據庫操作的數據庫約簡演算法利用關系數據庫的操作運算元直接對數據庫進行求核、屬性約簡和規則約簡,該方法充分發揮數據庫操作的簡便高效性,使得數據庫約簡演算法簡單易實現。
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