I am not a good painter (not at all :p), but becuase FirebirdSQL it is my favorite database, every time i install it at my customer computer, i think why not have a good logo like as another SQL engines.

I am Using Inkscape to make it ,www.Inkscape.com svg file

logo-32x32.png. Icon

logo-53x53.png. For inno setup small logo

logo-164x164.png. For inno setup large logo but must be 164×314

Here is the source SVG file using last version of Inkscape
All of pictures under licenece IDPL, you can use it where you want.
Original source logo-v2.2.0.svg here logo-v2.2.0.svg

By useing Gimp 2 to make Beveled picture (Script-Fu->Decor->Add Bevel) with Thickness = 5