基于TG模式的历史关系数据库的研究

Study on the Historical Relational Database Based on TG Model

给出了ＴＧ模式的形式化定义，并结合实例对该模式进行了深入的分析和研究，指出了其优缺点，并提出了对该模式的下一步研究思想。

The paper first gives the formal definition of TG model,then studies and analyses TG model by instance deeply,and gives the advantage and disadvantage,on the base of that,the paper suggests an idea studying TG model.