ndi.database.fun.opendatabase

  NDI_OPENDATABASE - open the database associated with an session

  DB = ndi.database.fun.opendatabase(DATABASE_PATH, SESSION_UNIQUE_REFERENCE)

  Searches the file path DATABASE_PATH for any known databases
  in NDI_DATABASEHIERACHY. If it finds a datbase of subtype ndi.database,
  then it is opened and returned in DB.

  If it finds no databases, then it tries to create a new database following
  the order in the hierarchy.

  Otherwise, DB is empty.