I downloaded a geodatabase with a series of numbers behind the file extension. For example, in my Window's Explorer the file appears as .gdb_15120592. I have attempted to create a new .gdb and move the files into the new .gdb. This allows me to see the shapefiles in ArcCatalog, however, once imported into ArcMap the attribute tables are empty.
I'm not sure if I'm doing something wrong or if I just ended up with an empty database.