You are talking connection information here, there is a standard in the works for that (although it seems pretty much dead at the moment).

http://www.ldraw.org/OLD/reference/specs/lcd/

On the main issue, I've setup such a db years ago for use in my LD4DStudio project. You could take a look at the coordinate information contained in the *.4sp files.

http://www.ld4dstudio.nl/

Haven't updated them to the latest LDraw library in quite some time though.


If you go on collecting this information more deeply I would be interested in it for use in future LDCad versions (I'm planning snapping for 1.3 or 1.4). Since the LCD thing seems pretty dead, I'm all open to any shared approach on this or maybe refire the LCD thing.