The title says it all really – I have a single file named 'a0000000.gdbtable’ in my default file geodatabase that is 60 GB in size. I have a number of other files with .gdbtable extension that aren't nearly as big. Just wondering what it is and whether I can delete it or make it smaller? It's taking up too much space!
Have you tried running the Compact tool on your file geodatabase? Compacting could get your geodatabase size down. I would not recommend deleting any of the files in the file geodatabase structure, as you are likely to kill it doing that. You say the "default" file geodatabase...personally I try to not keep anything in there that is of any importance and every once in a while delete the whole geodatabase and recreate a new one just to keep it trim and snappy. If you have edited the geodatabase a lot, then Compacting might indeed help.