It discuss the temporal relationalgebra operations fit to temporal database.
本文重点介绍了适合于时态数据库的时态关系代数。
2
Aim To put forward association rule mining algorithm based on relationalgebra theory.
目的提出基于关系代数理论的关联规则挖掘算法。
3
The math model is used to image the essential relation of every variable in the process, maybe the model is algebra equation, or differential equation, or geometry curve.