I have a table which contained the following columns.

```
ID int PK
Name nvarchar(50) NotNull
FID int FK reference to ID 

ID Name   PK
1  A      Null
2  B      Null
3  C      1
4  D      1
5  E      1
6  F      2

```

So, The primary key includes as a primary key in a table. I want to do that if the primary key is deleted, the rows which is contained the primary key as a foreign is deleted automatically. (example: When I delete ID 1 row, I want to delete automatically ID 3, 4, 5 rows.). How to make that the primary key is included as a foreign key in a table? How can I do this. Thanks.