Also, you can not lock up a dog in the house for more than 5 hours at maximum before it needs a potty break (the results of which you have to collect and dispose of). That means: no fulltime job or no single household. If only one applies in your case, forget about the dog.
Nonsense. During the winter my dog is in the house 8 hrs a day while we're at work. She has never had an accident (since she was a puppy, anyway) and sometimes doesn't even want to go outside right away when we get home.
Sounds like your dog has trained you