Abstract: Temporal relational database model is extended from relational database by adding time processing，and Temporal object-orient database model is extended from object-orient database by adding time processing.
Abstract: Temporal relational database model is extended from relational database by adding time processing，and Temporal object-orient database model is extended from object-orient database by adding time processing.
文摘:时态关系数据库在关系数据库的基础上扩充了对时间数据的处理，而时态面向对象数据库则是在面向对象数据库的基础上扩充了对时间数据的处理。