A librarian has helped me create some maps, and I need to open them. He is off work at the moment and I am in a rush for this. I have downloaded ArcGIS and he says I can open this with ArcMap. He has given me a folder that is .gdb and inside it contains many files:
.gdbindexes .gdbtable .gdbtablex .spx .atx etc..
I cannot open any of them with ArcMap.