Populating a primary key with 2 fields

[PlasticsGuy]

I am looking to create a cancatinated string to populate a primary key field in a table. It is going to be created while in a form from 2 of the fields in the form. They are called [EID] and [Pay Period]. I want to do this so that there are no dupilcate entries. Can someone here help me with this?

 

[PlasticsGuy]

Ok I just got it. All you have to do is designate the two fields I wanted to use to create a key as dual primary keys.

 

[jeremie_ingram]

Glad you got if figured out. What you were looking for is called a concatenated key.