Buddhist cannon database

s there an online database that either contains the Buddhist canon in either English or Chinese? I've had a difficult time tracking down first hand sources other than the usual suspects (Heart Sutra, Prajnaparamita sutra, etc). I've been looking for anything related to pratityasamutpada in the abhidharma, but I don't even know where to look, or even if English translations exist. Does anyone know where to look?