Double Clicking the database mdf file in Visual Studio shows a massive string of letters instead of showing me the tables and stuff

i'm on a different computer than the one i normally use and on this one when i double click the database.mdf it shows me just letters instead of the tables it shows me on the other computer. i'm using Visual Studio Community 2015 on the computer that it doesn't work on and 2012/3 (don't remember) on the computer it is working on.

sorry if this is the wrong place to post this in