As far as I understand you've got a client/server application, where there is an SQL server on server side and some application on the client side. So, you've got two choices to deploy the app on the customer side: 1. Deploy the SQL server and the client application on the same machine, which in general is not a good idea, 2. Deploy your stuff on two separate machines - one for SQL, i.e. the server, and one (or several) machine(s) for the client application.
Regards, Lev