Had a good look at it and it works well!
My only suggestion would be to do more with user interface to make the experience as pleasant as possible. I noticed with the demo database, for example, that the Employees table didn't seem like it had been designed to fit onto a smartphone's screen; the table was wide and the screen was in vertical orientation, and therefore involved some scrolling to see the rest of the table. A way to improve on this would be to force horizontal orientation for wide tables on smartphones. This way, the table will be much more visible.