BigByte

I'm new to Prestashop, currently trying to make a different order placement. all i want to do is, instead of saving the whole data in orders db that data (inclucing credit card details) has to be send to another link where i have already set another db for storing the retrieved data. to start the whole work i want to know how a whole order is saved in db and also about the emails. i couldn't get the flow of code. thats it.