I think I get it...Well maybe...What I think dude wants to do is create a database of component measurements so he can create programs that will tell a person if a combination of this, that or the other thingy will work on a given frame. Kind of like the Sutherlands manual perhaps? The good thing is that for the most part parts are pretty much standardized. You get into some funny stuff when dealing with bikes made before say about the mid 80's because of different threading.
If you want to just make a mock up type of program you need to make it easy on yourself so you can kinda guaranty what your outcomes will be. Pick 3 bikes that are very similar in component and threading specs that you know from experience stuff can get swapped around on. So I'd suggest 3 mid to late 80's bikes of Japanese manufacture. They all have the same thread, bottom bracket width, rear spacing and wheel size.
So find a Sutherlands, read Sheldon Browns database 5 times, pour over Velobase, get a couple mid 80's Japanese roadbikes and have at it...If you want access to lots of bikes in need of tear downs and you don't wanna pay perhaps you can volunteer at a bike co-op and rebuild bikes for kids or something...And please for the love of God get a bike guy involved. You need to get your nomenclature correct or nobody is gonna get on board except fellow tech geeks. We don't speak the same language bro...

If I understand correctly a website that I could go to and plug in a year and model of bike, pick components and have the thing tell me if it will work would be kind of cool. But honestly the only time I've ever run into problems is when trying to build up frames and my component group is ecclectic. Even then usually the only area of concern is finding the right bottom bracket so everything jives...

If you're trying to build this thing so bike shops or online retailers can have some sort of online "build your bike" thing...Don't waste your time. They know what fits and what doesn't. Any semi accomplished mechanic knows what works and what doesn't. When it comes to new bikes they are pretty much plug and play. Buy a frame, a complete component group, assemble and ride. Most people prefer complete groups so everything is coordinated and works properly. When in doubt Sutherlands or Sheldon have the answer and if that doesn't work the collective hive mind that is C&V certainly does...

My 2 cents...Hope it kinda makes sense.