Using slash in MySQL database
Currently on MySQL 5.5+ you can use such characters on both schema names and table names, just have in mind that there are known bugs caused by such characters being confused with directory paths on the MySQL internals code base.

Up until MySQL 5.5 you would find it to not be possible.
From this link: (of the old documentation, that's not available anymore)


  Database and table names cannot contain “/”, “\”, “.”, or characters that are not permitted in file names


One way or another, using backslashes is just bad-practice, I recommend that you use an underscore character instead.