copy a database within SQL Server Express?

Question

I would like to make a copy of a database I have but keep it on the same server as a test database. However, everything I have found is to use the copy database wizard (I am

Answer 1

I found the problem! Click on Databases, restore, then do the following: After choosing from where to restore, and writing destination db name, go to files [annotation 1 on picture] and change the very right column files names to different than original [annotation 2 on picture] then it works :)