What are the differences between local market and mall?

A shopping mall is a huge shopping complex or a structure (a building) which houses a number of shops. A market place can be on a ground or vacant area and may also consist of some concrete buildings/shops. But the difference is a shopping mall should be a big building housing shops and its appearance is not like market places like paalika bazar or karol bagh where shops are spread over streets. In a mall all shops come under one building structure.