title: Data compression definition
body: <p>Could anyone explain the term <code>"Data compression"</code> in database (<code>lame words</code>). Sorry if this question is simple, but it does help me.</p>
  
  <p>I did find the technical definition, but still did not get a right understanding. </p>
  
  <p>Data compression saves space and saves reading times and so on. Does that mean its aggregating data in the table? Please clarify</p>