Do I want to download the Base edition or Professional edition for Toad for Data Analysts?
If the license key you are going to be using is the same one that you used in a version prior to TDA 2.7, then you want to download the Base edition. To use the Professional edition, you would need to purchase a new license key that would allow you to access the Professional edition.
If you just purchased a new key, then you can check the e-mail that the license key was sent to you in. It should state in that e-mail if you purchased the Base or Professional edition.
Either way, if you download and install the incorrect edition, it will let you know when you try to enter the key if you need the other edition.
If you want to upgrade from the Base edition to the Professional edition, please contact your Quest salesperson. If you are not sure who your salesperson is, here is a link that will help you get in touch with them.