primary keys problem

[naderjavid]

Hello, This is database diagram of blogger, I think that yellow marked fields should be primary keys of particular tables. because in this situation we can have multiple record with same data like below!!

SubscriberId ArticleId Id 1111111111 2222222 1 1111111111 2222222 2 1111111111 2222222 3

It should be something like this

Or something like that