Using Composite Primary key of weak entity as Foreign key.

Hi,

We need to use the PK USER_ID from the table USER as a composite primary key for the weak entity in REQUEST_LIST. And then, we need to use the USER_ID from the request list table inserted as mention above to ORDER_DETAIL table as Foreign key. but we are not sure if a primary have been used for Composite Primary key could be use for Foreign key or not?

Could you please confirm?

Thank you