The law states that you can fly without license if you follow these rules :
150 meter distance to residential areas and road with trafic (meaning you can't fly in the city)
5 km distance to airports
8 km distance to military airports
Max allowed altitude is 100 meters above the ground
You're not allowed to fly FPV out of sight.
If you want to seek dispensation from these rules, you have to get a licence which is expensive and require a lot of paperwork.
If you fly commercially you also got to have a third party insurance.
Dispensation is granted by the Danish Air Traffic authorities.
Link to rules (DANISH) http://droner.dk/regler-for-droneflyvning/
None yet added.