Will all felony arrests show up in a national data base background check or are some listed only in specific state records?

Most states that have an expungement statute require that the Defendant take some affirmative steps to apply. In that regard, you should know whether or not you did that. Felony arrests will show in a national database search, provided the arrests were submitted by the state to the FBI. They generally do, along with your mugshot and prints.

If u get printed it will show up on federal ncic which means u get a FBI number and will b w u evrrywhete

If you previously filed a motion to expunge your RI record and the court allowed it, and you had that order of expungement delivered to all the necessary parties, then the record was likely expunged. If you did not do any of that, as the others have said, the charge/case will be on your record because of the running of the fingerprints etc. To see what's on your record in RI presently and what might be able to be expunged, you can check your record on RI Judiciary or walk into the RI AG's office on South Main St. and run your BCI for low $. http://www.riag.ri.gov/BCI/index.php# Depending on what shows up, reach out to an attorney privately to discuss options. Best of luck.