Upload data into main table consisting of a lookup field

Hi,

I am new to MDM and i am struggling with how to proceed with the below scenario

I have a main product table(Shown below) with COO as a lookup field.I want to import this import this information into the repository.

Given product table with data to be imported

Product Product description
COO
A Product A US B Product B IN C Product C IN D Product D US E Product E US

Since MDM uses parametric inport, I want to store the distinct values of the COO in a lookup table as shown below.

Lookup table

COO
COO description
US United states IN India

When performing data import using the import manager, I first have to fill the lookup table.

Then I have to import the values in the main table ?

If this is the case, how can I link the COO already stored in the look up tables to the products in the main table?

Please help.

Thanks,

Vignesh