title: MySQL- Is it possible to backup mySQL database within a period of time?
body: <p>I am going to backup mySQL database in a period of time. 
  For example: Only backup the data from January to June. </p>
  
  <p>Is it possible to do that? The reason I want to do this is I don't want to back up the database that is too old. 
  If it is possible please give me some suggestion how to do that.
  Thanks.</p>