Viewing Aviation Databse details in BaseCamp for GPSMAP495

Hi - I have installed the latest version of BaseCamp on my PC. I have connected my GPSMAP495 handheld to PC via USB and can see my own user created waypoints and previous tracks that I have flown but I cannot see any of the airspace database information that is on my handheld so I have no way of planning useful routes. Please can someone tell me how to be able to view the aviation database overlay in BaseCamp so that I can plan my flight routing safely. All I have in the select Map drop down list in BaseCamp is the Global Map - no mention of an Aviation Database and yet I can see all of the Aviation database on the device itself. I have done the Device > Receive from Device thing several times and each time it downloads the same user waypoints and tracks from the device without the Aviation Database itself. Very frustrating. If anyone can help I would be very grateful. TIA