BDN - Banner Developer Network

Hi we have to create a interface for oncampus housing system . we have third party which take care of student housing oncampus. Now that third party provide us .csv file of data and asking us to provide them data from banner . My question is , Is there any way we can directly import .csv file in Banner from third party or any tool in banner which can do import for us and what is the best way to import/export a file from banner .

Thanks
Sumit