We have 3 environments for developing in-house applications. Development, Test, and Production. If we wanted to use an enterprise version of visual guard and needed to have separate environments would we be required to purchase 3 copies or just a single copy we could use in all 3 database environments?

Yes. You must purchase 3 copies as a license is linked to one repository.

The recommended environment is to get at least 3 environments/repositories.

Feel free to contact us if you need more details.