Nassrat
You should only blame yourself though, you could have had a simple crypt on the db, with a key stored inside the binary. At least it would take a bit more work to rip you off.
I would suggest you go ahead and release your database to the public. The one thing you have that they do not is that you still have your scraper script(s). If it was me, I would create a (restful) web service that allows anyone to utilize your data, moreover, allow people (maybe with a nominal fee) to download the entire database, or if you really wanna get into it, implement keys (kinda like google maps) to access you bus timetable api.
Anybody can learn how to code, but by going through the Bachelors degrees in Maths or Comp Sci you gain the theories behind it. Ofcourse, you might be able to read these books on your own and thus prep yourself for a masters degree. Moreover, if you are not from a CS background the university will force you to take the CS core courses which give you the foundational theoretical knowledge.