many to many dimension

Hi,

I have order fact table which has keys to customer dimension and product dimension. I need to add customer_product dimension in which are stored productID of our customers for our products.

I dont want to create customer_product dimension directly connected to fact table. Is there some simple many to many solution ? My idea is, that user has to be able to filter Customer_product_ID based on filtered customer.

How to do that please?

Thanks