How is an Airbus A380 fuselage joined and fastened together? An Airbus A380 fuselage is manufactured in three different parts and then assembled together:





(Images courtesy of Airbus S.A.S 1994)

The fuselage functions under extreme conditions: low pressure outside and normal pressure on the inside (normal for humans, that is), and wind drag at near Mach 1 speeds.

How are the three parts joined together to complete an airtight unit? Does one fit into the other in a male-female configuration and how are they held together? Is it nuts and bolts, rivets, screws, airtight glue or a combination of them all?  Pictures would be greatly appreciated.
With approximately 19,000 rivets.

This picture is of the wing attachments, but the fuselage joints use the same attachment method.