Having an updated database that does not over-write the original

[rookiemanager2]

Hi, i have a database for the English leagues (15 tiers) and have had 2 requests to add to that. I am happy to do this, but DO NOT want to over-write the original;

How do i have 2 databases-version 1 & version 2 under the same download heading?

I cannot overwrite the original as it is the one that i recommend due to less teams added. The second one is added teams.

Anyone help thanks