If you are expelled, you will be subject to a prohibition against entry. You cannot stay in Norway as long as the prohibition is in force. If you have a prohibition against entry to Norway, the UDI will also decide whether you will be subject to a prohibition against entry to all the Schengen countries. In that case, you will be registered in the database Schengen Information System (SIS).
Those who are registered in SIS cannot enter or stay in the Schengen area. The authorities in all the Schengen countries can check who is registered in SIS.
If you are registered in SIS you have the right to know what information is registered about you. You cannot access information about someone else
If you wish to find out what information is registered about you, or ask for incorrect information to be corrected or deleted, you must contact the National Criminal Investigation Service (NCIS, or Kripos in Norwegian). You will find more information about how to proceed and the request form which you need to fill in at the NCIS website. (external website)