title: BigDecimal, precision and scale
body: <p>I'm using BigDecimal for my numbers in my application, for example, with JPA. I did a bit of researching about the terms 'precision' and 'scale' but I don't understand what are they exactly.</p>
  
  <p>Can anyone explain me the meaning of 'precision' and 'scale' for a BigDecimal value?</p>
  
  <pre><code>@Column(precision = 11, scale = 2)
  </code></pre>
  
  <p>Thanks!</p>