How to assign a primary key to a data source?

Hi, I am on Data Services Designer 3.2. I have a flat file (csv file) which has a list of customers with field names : Lname, Fname, Age, Birthdate, Gender and Address, what I wanted to do is to populate those data into a MySQL database and also assign a primary key column to each of these data.

The output would be like:

Customer Id     Lname     Fname          Age     Birthdate           Gender

1                     Doe         Johnny          35       Aug. 02, 1993    Male

2                     Doe         Mary Jane     31       Sep. 24, 1989   Female

I can't quite figure out how to do this, any help will be greatly appreciated.

Thank you in advance.

Regards,

Rod