code: public boolean setDbType(String dbType) {
          boolean result = false;
          if (dbTypes.contains(dbType)) {
              setSelectedDbType(dbType);
              result = true;
          }
          return result;
      }
docs: Sets the selected database type.
  
  @param dbType The database type selected
  @return True if the database type has been saved else false (A invalid type)