code: public boolean setDbInfo(String field, String value) {
          boolean result = false;
          if (dbInfo.contains(field)) {
              dbConnectInfo.put(field, value);
              result = true;
          }
          return result;
      }
docs: Sets a field information for the selected database type
  
  @param field The field name.
  @param value The value of the field.
  @return True if the field has been saved else false (A invalid field)