Latest questions about "database professional"

I need to buy database professional or 2 licenses for the database professional I already own need some help

Now using an older version, is it compatible and upgrade-able to this version? and hOW mUCH?

I have tried several times to download DataBase Professional but it will not download. I would really like to download it.

How to look for, find and then direct the program to view and work on my database?

I have a copy of DataBase Professional 1.0.0.0 that I have been using since 2004. It was registered when I bought it. Last year when I bought a new computer, I reinstalled the software.