title: Database Boolean and DateTime naming convention
body: <p>I am creating a Posts SQL table where I need to save:<br>
  1. If the post is approved;<br>
  2. When the post was approved.    </p>
  
  <p>I am considering naming these columns IsApproved and ApprovedAt:</p>
  
  <pre><code>create table dbo.Posts
  (
    Id int identity not null,
    IsApproved bit null,
    ApprovedAt datetime null
  )
  </code></pre>
  
  <p>Is there any convention for such a case?</p>