how to delete the row and its child in entity framework 4

I have a simple and beginner question.

I have two table开发者_StackOverflow中文版s with 1 to N relationship. I want to when I delete a row in parent table, in an

other table the child of that row delete too.

How can I do that using entity framework?

Probably it was asked before, refer to the link below:

Delete an object and all of its related entities in Entity Framework

I do believe that you should handle that at Database level by using CASCADE DELETE ON.