Is my dog technically housebroken?

We are a busy family of 4, and because of this no one is home during the day to take our 4 year old Maltese out. She has become accustomed to using a pee pad to do her business 3 times a day. She only goes on the pee pad and her bathroom breaks are very scheduled. If we were to take her out she would go outside, but since we are usually busy when she needs to go, we have a little bathroom corner for her.

Does this technically mean that she is housebroken? Or does this mean she is not potty trained?