Division Operation Semantics and Realization by SQL Based on Predicate Logic
Chu Cheng-zhe · Journal of Zhejiang Wanli University · 2008
The RDB(Relational DataBase)is a kind of database,with a strict mathematics model,which has solved data storage and applyications.Division is one of the basic operations,which is difficult to be realized.The paper developed a method to realize the division in MS SQL,which decomposes the division process with predicate logic.The paper proposes a method about division,also gives a teaching method about division operation in MS SQL.