DeleteCustomer method with parameter customer.

GetConnection method which returns sql.DB.

GetCustomers method returns Customer Array.

Tar takes a source and variable writers and walks 'source' writing each file found to the tar writer; the purpose for accepting multiple writers is to allow for multiple outputs (for example a file, or md5 hash).

Untar takes a destination path and a reader; a tar reader loops over the tarfile creating the file structure at 'dst' along the way, and writing any files.

UpdateCustomer method with parameter customer.

Customer Class.