Is also a great introduction to this topic and shows the motivation and theory behind the "relational algebra" in ActiveRecord 3.
也是一个关于此话题的很好的介绍，解释了ActiveRecord 3中的“关系代数”背后的的动机和理论。
Is also a great introduction to this topic and shows the motivation and theory behind the "relational algebra" in ActiveRecord 3.
也是一个关于此话题的很好的介绍，解释了ActiveRecord 3中的“关系代数”背后的的动机和理论。
应用推荐