Each database is available in many formats. The formats available for each item are clearly listed on the product detail page. Every data set is available in both CSV, Excel, MS Access and MySQL Dump at a minimum.
There is no need to 'choose' or 'pick' the format you need, all available file options will be in your account for download.
The specific formats available for each database are listed on the product page, just to the left of the pricing information:
Also Note that Master Rights license holders can request custom output formats from us to fit your exact requirements.